/**
 * EmbeddedEngineTest - Unit tests for EmbeddedEngine
 * 
 * All tests use async methods with MainLoop wrappers for the test framework.
 */
using Implexus.Core;
using Implexus.Engine;
using Implexus.Storage;

public static int main(string[] args) {
    int passed = 0;
    int failed = 0;

    // Test 1: Root creation
    if (test_root_creation()) {
        passed++;
        stdout.puts("PASS: test_root_creation\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_root_creation\n");
    }

    // Test 2: Container creation
    if (test_container_creation()) {
        passed++;
        stdout.puts("PASS: test_container_creation\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_container_creation\n");
    }

    // Test 3: Document creation
    if (test_document_creation()) {
        passed++;
        stdout.puts("PASS: test_document_creation\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_document_creation\n");
    }

    // Test 4: Container deletion
    if (test_container_deletion()) {
        passed++;
        stdout.puts("PASS: test_container_deletion\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_container_deletion\n");
    }

    // Test 5: Document deletion
    if (test_document_deletion()) {
        passed++;
        stdout.puts("PASS: test_document_deletion\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_document_deletion\n");
    }

    // Test 6: Property access
    if (test_property_access()) {
        passed++;
        stdout.puts("PASS: test_property_access\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_property_access\n");
    }

    // Test 7: Property removal
    if (test_property_removal()) {
        passed++;
        stdout.puts("PASS: test_property_removal\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_property_removal\n");
    }

    // Test 8: Get children
    if (test_get_children()) {
        passed++;
        stdout.puts("PASS: test_get_children\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_get_children\n");
    }

    // Test 9: Entity exists
    if (test_entity_exists()) {
        passed++;
        stdout.puts("PASS: test_entity_exists\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_entity_exists\n");
    }

    // Test 10: Get entity
    if (test_get_entity()) {
        passed++;
        stdout.puts("PASS: test_get_entity\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_get_entity\n");
    }

    // Test 11: Query by type
    if (test_query_by_type()) {
        passed++;
        stdout.puts("PASS: test_query_by_type\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_query_by_type\n");
    }

    // Test 12: Nested containers
    if (test_nested_containers()) {
        passed++;
        stdout.puts("PASS: test_nested_containers\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_nested_containers\n");
    }

    // Test 13: Multiple documents
    if (test_multiple_documents()) {
        passed++;
        stdout.puts("PASS: test_multiple_documents\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_multiple_documents\n");
    }

    // Test 14: Entity path
    if (test_entity_path()) {
        passed++;
        stdout.puts("PASS: test_entity_path\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_entity_path\n");
    }

    // Test 15: Persistence
    if (test_engine_persistence()) {
        passed++;
        stdout.puts("PASS: test_engine_persistence\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_engine_persistence\n");
    }
    
    // Test 16: Category virtual child resolution
    if (test_category_virtual_child_resolution()) {
        passed++;
        stdout.puts("PASS: test_category_virtual_child_resolution\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_category_virtual_child_resolution\n");
    }
    
    // Test 17: Category virtual child not found
    if (test_category_virtual_child_not_found()) {
        passed++;
        stdout.puts("PASS: test_category_virtual_child_not_found\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_category_virtual_child_not_found\n");
    }
    
    // Test 18: Catalogue virtual child group resolution
    if (test_catalogue_virtual_child_group()) {
        passed++;
        stdout.puts("PASS: test_catalogue_virtual_child_group\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_catalogue_virtual_child_group\n");
    }
    
    // Test 19: Catalogue virtual child document resolution
    if (test_catalogue_virtual_child_document()) {
        passed++;
        stdout.puts("PASS: test_catalogue_virtual_child_document\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_catalogue_virtual_child_document\n");
    }
    
    // Test 20: Catalogue virtual child not found
    if (test_catalogue_virtual_child_not_found()) {
        passed++;
        stdout.puts("PASS: test_catalogue_virtual_child_not_found\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_catalogue_virtual_child_not_found\n");
    }
    
    // Test 21: Index virtual child resolution
    if (test_index_virtual_child_resolution()) {
        passed++;
        stdout.puts("PASS: test_index_virtual_child_resolution\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_index_virtual_child_resolution\n");
    }
    
    // Test 22: Index virtual child no matches
    if (test_index_virtual_child_no_matches()) {
        passed++;
        stdout.puts("PASS: test_index_virtual_child_no_matches\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_index_virtual_child_no_matches\n");
    }
    
    // Test 23: Category direct vs navigation comparison
    if (test_category_direct_vs_navigation()) {
        passed++;
        stdout.puts("PASS: test_category_direct_vs_navigation\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_category_direct_vs_navigation\n");
    }
    
    // Test 24: Catalogue direct vs navigation comparison
    if (test_catalogue_direct_vs_navigation()) {
        passed++;
        stdout.puts("PASS: test_catalogue_direct_vs_navigation\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_catalogue_direct_vs_navigation\n");
    }
    
    // Test 25: Index direct vs navigation comparison
    if (test_index_direct_vs_navigation()) {
        passed++;
        stdout.puts("PASS: test_index_direct_vs_navigation\n");
    } else {
        failed++;
        stdout.puts("FAIL: test_index_direct_vs_navigation\n");
    }
    
    stdout.printf("\nResults: %d passed, %d failed\n", passed, failed);
    return failed > 0 ? 1 : 0;
}

// Helper to create temporary directory
string create_temp_dir() {
    string temp_dir = DirUtils.mkdtemp("implexus_engine_test_XXXXXX");
    return temp_dir;
}

// Test 1: Root creation
bool test_root_creation() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        stderr.printf("Test error: %s\n", ((!)error).message);
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)root).entity_type != EntityType.CONTAINER) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (!((!)root).path.is_root) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)root).name != "") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 2: Container creation
bool test_container_creation() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    bool exists = false;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)container).entity_type != EntityType.CONTAINER) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)container).name != "users") {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)container).path.to_string() != "/users") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Verify it exists
    engine.entity_exists_async.begin(((!)container).path, (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 3: Document creation
bool test_document_creation() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? users = null;
    Entity? john = null;
    bool exists = false;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            users = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("john", "User", (obj, res) => {
        try {
            john = ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || john == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)john).entity_type != EntityType.DOCUMENT) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)john).name != "john") {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)john).type_label != "User") {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)john).path.to_string() != "/users/john") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Verify it exists
    engine.entity_exists_async.begin(((!)john).path, (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 4: Container deletion
bool test_container_deletion() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    bool exists_before = false;
    bool exists_after = true;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("temp", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Check exists before
    engine.entity_exists_async.begin(((!)container).path, (obj, res) => {
        try {
            exists_before = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists_before) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Delete
    ((!)container).delete_async.begin((obj, res) => {
        try {
            ((!)container).delete_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Check exists after
    engine.entity_exists_async.begin(((!)container).path, (obj, res) => {
        try {
            exists_after = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (exists_after) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 5: Document deletion
bool test_document_deletion() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? docs = null;
    Entity? doc = null;
    bool exists_before = false;
    bool exists_after = true;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("docs", (obj, res) => {
        try {
            docs = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || docs == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)docs).create_document_async.begin("doc1", "Document", (obj, res) => {
        try {
            doc = ((!)docs).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Check exists before
    engine.entity_exists_async.begin(((!)doc).path, (obj, res) => {
        try {
            exists_before = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists_before) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Delete
    ((!)doc).delete_async.begin((obj, res) => {
        try {
            ((!)doc).delete_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Check exists after
    engine.entity_exists_async.begin(((!)doc).path, (obj, res) => {
        try {
            exists_after = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (exists_after) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 6: Property access
bool test_property_access() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? docs = null;
    Entity? doc = null;
    Invercargill.Element? name = null;
    Invercargill.Element? count = null;
    Invercargill.Element? active = null;
    Invercargill.Element? missing = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("docs", (obj, res) => {
        try {
            docs = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || docs == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)docs).create_document_async.begin("doc1", "Document", (obj, res) => {
        try {
            doc = ((!)docs).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Set properties
    ((!)doc).set_entity_property_async.begin("name", new Invercargill.NativeElement<string>("Test Document"), (obj, res) => {
        try {
            ((!)doc).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).set_entity_property_async.begin("count", new Invercargill.NativeElement<int64?>(42), (obj, res) => {
        try {
            ((!)doc).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).set_entity_property_async.begin("active", new Invercargill.NativeElement<bool?>(true), (obj, res) => {
        try {
            ((!)doc).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Get properties
    ((!)doc).get_entity_property_async.begin("name", (obj, res) => {
        try {
            name = ((!)doc).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || name == null || ((!)name).is_null()) {
        cleanup_dir(temp_dir);
        return false;
    }
    string name_val = ((!)name).as<string>();
    if (name_val != "Test Document") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).get_entity_property_async.begin("count", (obj, res) => {
        try {
            count = ((!)doc).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || count == null || ((!)count).is_null()) {
        cleanup_dir(temp_dir);
        return false;
    }
    int64? count_val = ((!)count).as<int64?>();
    if (count_val == null || (!)count_val != 42) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).get_entity_property_async.begin("active", (obj, res) => {
        try {
            active = ((!)doc).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || active == null || ((!)active).is_null()) {
        cleanup_dir(temp_dir);
        return false;
    }
    bool active_val = ((!)active).as<bool?>();
    if (active_val != true) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Non-existent property
    ((!)doc).get_entity_property_async.begin("missing", (obj, res) => {
        try {
            missing = ((!)doc).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (missing != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 7: Property removal
bool test_property_removal() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? docs = null;
    Entity? doc = null;
    Invercargill.Element? value = null;
    Invercargill.Element? value_after = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("docs", (obj, res) => {
        try {
            docs = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || docs == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)docs).create_document_async.begin("doc1", "Document", (obj, res) => {
        try {
            doc = ((!)docs).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).set_entity_property_async.begin("temp", new Invercargill.NativeElement<string>("temporary"), (obj, res) => {
        try {
            ((!)doc).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).get_entity_property_async.begin("temp", (obj, res) => {
        try {
            value = ((!)doc).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || value == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).remove_property_async.begin("temp", (obj, res) => {
        try {
            ((!)doc).remove_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc).get_entity_property_async.begin("temp", (obj, res) => {
        try {
            value_after = ((!)doc).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (value_after != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 8: Get children
bool test_get_children() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? users = null;
    Entity[] children = {};
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            users = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create documents
    ((!)users).create_document_async.begin("john", "User", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("jane", "User", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("bob", "User", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).get_children_async.begin((obj, res) => {
        try {
            children = ((!)users).get_children_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || children.length != 3) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Check all children are present
    var child_names = new Invercargill.DataStructures.HashSet<string>();
    foreach (var child in children) {
        child_names.add(child.name);
    }
    
    if (!child_names.has("john") || !child_names.has("jane") || !child_names.has("bob")) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 9: Entity exists
bool test_entity_exists() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? users = null;
    bool exists1 = false;
    bool exists2 = true;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            users = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine.entity_exists_async.begin(new EntityPath("/users"), (obj, res) => {
        try {
            exists1 = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists1) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine.entity_exists_async.begin(new EntityPath("/nonexistent"), (obj, res) => {
        try {
            exists2 = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (exists2) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 10: Get entity
bool test_get_entity() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? users = null;
    Entity? retrieved = null;
    Entity? nonexistent = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            users = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("john", "User", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Get entity by path
    engine.get_entity_async.begin(new EntityPath("/users/john"), (obj, res) => {
        try {
            retrieved = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || retrieved == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)retrieved).entity_type != EntityType.DOCUMENT) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)retrieved).name != "john") {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)retrieved).type_label != "User") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Get non-existent entity - should throw
    engine.get_entity_async.begin(new EntityPath("/nonexistent"), (obj, res) => {
        try {
            nonexistent = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    // Should have thrown
    if (nonexistent != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 11: Query by type
bool test_query_by_type() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? users = null;
    Entity[] user_results = {};
    Entity[] admin_results = {};
    Entity[] none_results = {};
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            users = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("john", "User", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("jane", "User", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users).create_document_async.begin("admin", "Admin", (obj, res) => {
        try {
            ((!)users).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Query for Users
    engine.query_by_type_async.begin("User", (obj, res) => {
        try {
            user_results = engine.query_by_type_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || user_results.length != 2) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Query for Admins
    engine.query_by_type_async.begin("Admin", (obj, res) => {
        try {
            admin_results = engine.query_by_type_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || admin_results.length != 1) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Query for non-existent type
    engine.query_by_type_async.begin("NonExistent", (obj, res) => {
        try {
            none_results = engine.query_by_type_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || none_results.length != 0) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 12: Nested containers
bool test_nested_containers() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? level1 = null;
    Entity? level2 = null;
    Entity? level3 = null;
    bool exists1 = false;
    bool exists2 = false;
    bool exists3 = false;
    Entity[] level1_children = {};
    Entity[] level2_children = {};
    Entity[] level3_children = {};
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("level1", (obj, res) => {
        try {
            level1 = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || level1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)level1).create_container_async.begin("level2", (obj, res) => {
        try {
            level2 = ((!)level1).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || level2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)level2).create_container_async.begin("level3", (obj, res) => {
        try {
            level3 = ((!)level2).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || level3 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine.entity_exists_async.begin(new EntityPath("/level1"), (obj, res) => {
        try {
            exists1 = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists1) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine.entity_exists_async.begin(new EntityPath("/level1/level2"), (obj, res) => {
        try {
            exists2 = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists2) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine.entity_exists_async.begin(new EntityPath("/level1/level2/level3"), (obj, res) => {
        try {
            exists3 = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists3) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Verify parent-child relationships
    ((!)level1).get_children_async.begin((obj, res) => {
        try {
            level1_children = ((!)level1).get_children_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || level1_children.length != 1) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)level2).get_children_async.begin((obj, res) => {
        try {
            level2_children = ((!)level2).get_children_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || level2_children.length != 1) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)level3).get_children_async.begin((obj, res) => {
        try {
            level3_children = ((!)level3).get_children_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || level3_children.length != 0) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 13: Multiple documents
bool test_multiple_documents() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? users = null;
    Entity[] children = {};
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("users", (obj, res) => {
        try {
            users = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create multiple documents
    for (int i = 0; i < 10; i++) {
        int idx = i;
        Entity? doc = null;
        ((!)users).create_document_async.begin(@"user$idx", "User", (obj, res) => {
            try {
                doc = ((!)users).create_document_async.end(res);
            } catch (Error e) {
                error = e;
            }
            loop.quit();
        });
        loop.run();
        
        if (error != null || doc == null) {
            cleanup_dir(temp_dir);
            return false;
        }
        
        ((!)doc).set_entity_property_async.begin("index", new Invercargill.NativeElement<int64?>(idx), (obj, res) => {
            try {
                ((!)doc).set_entity_property_async.end(res);
            } catch (Error e) {
                error = e;
            }
            loop.quit();
        });
        loop.run();
        
        if (error != null) {
            cleanup_dir(temp_dir);
            return false;
        }
    }
    
    // Verify all exist
    ((!)users).get_children_async.begin((obj, res) => {
        try {
            children = ((!)users).get_children_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || children.length != 10) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Verify properties
    for (int i = 0; i < 10; i++) {
        int idx = i;
        Entity? doc = null;
        Invercargill.Element? index = null;
        
        engine.get_entity_async.begin(new EntityPath(@"/users/user$idx"), (obj, res) => {
            try {
                doc = engine.get_entity_async.end(res);
            } catch (Error e) {
                error = e;
            }
            loop.quit();
        });
        loop.run();
        
        if (error != null || doc == null) {
            cleanup_dir(temp_dir);
            return false;
        }
        
        ((!)doc).get_entity_property_async.begin("index", (obj, res) => {
            try {
                index = ((!)doc).get_entity_property_async.end(res);
            } catch (Error e) {
                error = e;
            }
            loop.quit();
        });
        loop.run();
        
        if (error != null || index == null || ((!)index).is_null()) {
            cleanup_dir(temp_dir);
            return false;
        }
        int64? index_val = ((!)index).as<int64?>();
        if (index_val == null || (!)index_val != idx) {
            cleanup_dir(temp_dir);
            return false;
        }
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 14: Entity path
bool test_entity_path() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? a = null;
    Entity? b = null;
    Entity? c = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root).create_container_async.begin("a", (obj, res) => {
        try {
            a = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || a == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)a).create_container_async.begin("b", (obj, res) => {
        try {
            b = ((!)a).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || b == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)b).create_document_async.begin("c", "Document", (obj, res) => {
        try {
            c = ((!)b).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || c == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (!((!)root).path.is_root) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)a).path.to_string() != "/a") {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)b).path.to_string() != "/a/b") {
        cleanup_dir(temp_dir);
        return false;
    }
    if (((!)c).path.to_string() != "/a/b/c") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Check parent relationships
    if (!((!)c).path.parent.equals(((!)b).path)) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (!((!)b).path.parent.equals(((!)a).path)) {
        cleanup_dir(temp_dir);
        return false;
    }
    if (!((!)a).path.parent.equals(((!)root).path)) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 15: Persistence
bool test_engine_persistence() {
    string temp_dir = create_temp_dir();
    
    // Create and write
    var engine1 = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root1 = null;
    Entity? users1 = null;
    Entity? john1 = null;
    bool exists1 = false;
    bool exists2 = false;
    Entity? root2 = null;
    Entity? john2 = null;
    Invercargill.Element? email = null;
    Error? error = null;
    
    engine1.get_root_async.begin((obj, res) => {
        try {
            root1 = engine1.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)root1).create_container_async.begin("users", (obj, res) => {
        try {
            users1 = ((!)root1).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || users1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)users1).create_document_async.begin("john", "User", (obj, res) => {
        try {
            john1 = ((!)users1).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || john1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)john1).set_entity_property_async.begin("email", new Invercargill.NativeElement<string>("john@example.com"), (obj, res) => {
        try {
            ((!)john1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create new engine instance
    var engine2 = new EmbeddedEngine.with_path(temp_dir);
    
    // Verify data persists
    engine2.get_root_async.begin((obj, res) => {
        try {
            root2 = engine2.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine2.entity_exists_async.begin(new EntityPath("/users"), (obj, res) => {
        try {
            exists1 = engine2.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists1) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine2.entity_exists_async.begin(new EntityPath("/users/john"), (obj, res) => {
        try {
            exists2 = engine2.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (!exists2) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    engine2.get_entity_async.begin(new EntityPath("/users/john"), (obj, res) => {
        try {
            john2 = engine2.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || john2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)john2).get_entity_property_async.begin("email", (obj, res) => {
        try {
            email = ((!)john2).get_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || email == null || ((!)email).is_null()) {
        cleanup_dir(temp_dir);
        return false;
    }
    string email_val = ((!)email).as<string>();
    if (email_val != "john@example.com") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Cleanup helper
void cleanup_dir(string path) {
    try {
        Dir dir = Dir.open(path, 0);
        string? name;
        while ((name = dir.read_name()) != null) {
            FileUtils.unlink(Path.build_filename(path, name));
        }
    } catch (FileError e) {
        // Ignore errors
    }
    DirUtils.remove(path);
}

// ============================================================================
// Virtual Entity Resolution Tests
// ============================================================================

// Test 16: Category virtual child resolution - get_entity_async for member
bool test_category_virtual_child_resolution() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? doc2 = null;
    Entity? category = null;
    Entity? resolved_doc = null;
    bool exists = false;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // IMPORTANT: Create category FIRST so hooks are registered
    ((!)container).create_category_async.begin("published", "Post", "!draft", (obj, res) => {
        try {
            category = ((!)container).create_category_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || category == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Now create documents - hooks will update the category index
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Set draft = false on post1 (matches !draft predicate)
    ((!)doc1).set_entity_property_async.begin("draft", new Invercargill.NativeElement<bool?>(false), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)container).create_document_async.begin("post2", "Post", (obj, res) => {
        try {
            doc2 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Set draft = true on post2 (does NOT match !draft predicate)
    ((!)doc2).set_entity_property_async.begin("draft", new Invercargill.NativeElement<bool?>(true), (obj, res) => {
        try {
            ((!)doc2).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: Resolve category member via direct path
    engine.get_entity_async.begin(new EntityPath("/posts/published/post1"), (obj, res) => {
        try {
            resolved_doc = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    // post1 should be found (draft = false, matches !draft)
    if (error != null || resolved_doc == null) {
        stderr.printf("Failed to resolve post1: %s\n", error != null ? ((!)error).message : "null");
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)resolved_doc).entity_type != EntityType.DOCUMENT) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)resolved_doc).name != "post1") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: entity_exists_async for category member
    engine.entity_exists_async.begin(new EntityPath("/posts/published/post1"), (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || !exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 17: Category virtual child resolution - non-existent child returns ENTITY_NOT_FOUND
bool test_category_virtual_child_not_found() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? category = null;
    Entity? resolved_doc = null;
    bool exists = true;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // IMPORTANT: Create category FIRST so hooks are registered
    ((!)container).create_category_async.begin("published", "Post", "!draft", (obj, res) => {
        try {
            category = ((!)container).create_category_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || category == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Now create document with draft = true (does NOT match !draft predicate)
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("draft", new Invercargill.NativeElement<bool?>(true), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: Try to resolve non-member (post1 has draft=true, doesn't match !draft)
    engine.get_entity_async.begin(new EntityPath("/posts/published/post1"), (obj, res) => {
        try {
            resolved_doc = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    // post1 should NOT be found (draft = true, doesn't match !draft)
    if (resolved_doc != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Should have thrown ENTITY_NOT_FOUND
    if (error == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: entity_exists_async for non-member
    engine.entity_exists_async.begin(new EntityPath("/posts/published/post1"), (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 18: Catalogue virtual child resolution - group key returns CatalogueGroup
bool test_catalogue_virtual_child_group() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? doc2 = null;
    Entity? catalogue = null;
    Entity? resolved_group = null;
    bool exists = false;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // IMPORTANT: Create catalogue FIRST so hooks are registered
    ((!)container).create_catalogue_async.begin("by-author", "Post", "author", (obj, res) => {
        try {
            catalogue = ((!)container).create_catalogue_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || catalogue == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Now create documents - hooks will update the catalogue index
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("author", new Invercargill.NativeElement<string>("john"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)container).create_document_async.begin("post2", "Post", (obj, res) => {
        try {
            doc2 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc2).set_entity_property_async.begin("author", new Invercargill.NativeElement<string>("jane"), (obj, res) => {
        try {
            ((!)doc2).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: Resolve group via direct path
    engine.get_entity_async.begin(new EntityPath("/posts/by-author/john"), (obj, res) => {
        try {
            resolved_group = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || resolved_group == null) {
        stderr.printf("Failed to resolve group: %s\n", error != null ? ((!)error).message : "null");
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Should be a CatalogueGroup (appears as CATALOGUE type)
    if (((!)resolved_group).entity_type != EntityType.CATALOGUE) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)resolved_group).name != "john") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: entity_exists_async for group
    engine.entity_exists_async.begin(new EntityPath("/posts/by-author/john"), (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || !exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 19: Catalogue virtual child resolution - document within group
bool test_catalogue_virtual_child_document() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? doc2 = null;
    Entity? catalogue = null;
    Entity? resolved_doc = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // IMPORTANT: Create catalogue FIRST so hooks are registered
    ((!)container).create_catalogue_async.begin("by-author", "Post", "author", (obj, res) => {
        try {
            catalogue = ((!)container).create_catalogue_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || catalogue == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Now create documents - hooks will update the catalogue index
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("author", new Invercargill.NativeElement<string>("john"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)container).create_document_async.begin("post2", "Post", (obj, res) => {
        try {
            doc2 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc2).set_entity_property_async.begin("author", new Invercargill.NativeElement<string>("jane"), (obj, res) => {
        try {
            ((!)doc2).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: Resolve document via direct path (document name within any group)
    engine.get_entity_async.begin(new EntityPath("/posts/by-author/post1"), (obj, res) => {
        try {
            resolved_doc = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || resolved_doc == null) {
        stderr.printf("Failed to resolve document: %s\n", error != null ? ((!)error).message : "null");
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Should be a Document
    if (((!)resolved_doc).entity_type != EntityType.DOCUMENT) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)resolved_doc).name != "post1") {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 20: Catalogue virtual child resolution - non-existent returns ENTITY_NOT_FOUND
bool test_catalogue_virtual_child_not_found() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? catalogue = null;
    Entity? resolved = null;
    bool exists = true;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create document
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("author", new Invercargill.NativeElement<string>("john"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create catalogue grouped by author
    ((!)container).create_catalogue_async.begin("by-author", "Post", "author", (obj, res) => {
        try {
            catalogue = ((!)container).create_catalogue_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || catalogue == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Populate the catalogue index
    var catalogue_impl = catalogue as Implexus.Entities.Catalogue;
    if (catalogue_impl != null) {
        try {
            ((!)catalogue_impl).populate_index();
        } catch (Error e) {
            cleanup_dir(temp_dir);
            return false;
        }
    }
    
    // Test: Try to resolve non-existent group
    engine.get_entity_async.begin(new EntityPath("/posts/by-author/nonexistent"), (obj, res) => {
        try {
            resolved = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    // Should NOT be found
    if (resolved != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Should have thrown ENTITY_NOT_FOUND
    if (error == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: entity_exists_async for non-existent
    engine.entity_exists_async.begin(new EntityPath("/posts/by-author/nonexistent"), (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 21: Index virtual child resolution - search pattern returns IndexResult
bool test_index_virtual_child_resolution() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? doc2 = null;
    Entity? index = null;
    Entity? resolved_result = null;
    bool exists = false;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("articles", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create documents FIRST with searchable content
    ((!)container).create_document_async.begin("article1", "Article", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("title", new Invercargill.NativeElement<string>("Introduction to Vala"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)container).create_document_async.begin("article2", "Article", (obj, res) => {
        try {
            doc2 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc2 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc2).set_entity_property_async.begin("title", new Invercargill.NativeElement<string>("Advanced Vala Techniques"), (obj, res) => {
        try {
            ((!)doc2).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create index AFTER documents - populate_index() will be called internally
    ((!)container).create_index_async.begin("search", "Article", "title", (obj, res) => {
        try {
            index = ((!)container).create_index_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || index == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Explicitly populate the index (needed for tests)
    var index_impl = index as Implexus.Entities.Index;
    if (index_impl != null) {
        try {
            ((!)index_impl).populate_index();
        } catch (Error e) {
            cleanup_dir(temp_dir);
            return false;
        }
    }
    
    // Test: Resolve search pattern via direct path
    engine.get_entity_async.begin(new EntityPath("/articles/search/*Vala*"), (obj, res) => {
        try {
            resolved_result = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || resolved_result == null) {
        stderr.printf("Failed to resolve search: %s\n", error != null ? ((!)error).message : "null");
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Should be a Container (IndexResult appears as CONTAINER)
    if (((!)resolved_result).entity_type != EntityType.CONTAINER) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: entity_exists_async for search with matches
    engine.entity_exists_async.begin(new EntityPath("/articles/search/*Vala*"), (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || !exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 22: Index virtual child resolution - no matches returns ENTITY_NOT_FOUND
bool test_index_virtual_child_no_matches() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? index = null;
    Entity? resolved = null;
    bool exists = true;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("articles", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create document
    ((!)container).create_document_async.begin("article1", "Article", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("title", new Invercargill.NativeElement<string>("Introduction to Vala"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create index over title property
    ((!)container).create_index_async.begin("search", "Article", "title", (obj, res) => {
        try {
            index = ((!)container).create_index_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || index == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Populate the index
    var index_impl = index as Implexus.Entities.Index;
    if (index_impl != null) {
        try {
            ((!)index_impl).populate_index();
        } catch (Error e) {
            cleanup_dir(temp_dir);
            return false;
        }
    }
    
    // Test: Search with no matches
    engine.get_entity_async.begin(new EntityPath("/articles/search/*NonExistent*"), (obj, res) => {
        try {
            resolved = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    // Should NOT be found
    if (resolved != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Should have thrown ENTITY_NOT_FOUND
    if (error == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Test: entity_exists_async for search with no matches
    engine.entity_exists_async.begin(new EntityPath("/articles/search/*NonExistent*"), (obj, res) => {
        try {
            exists = engine.entity_exists_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (exists) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 23: Comparison - direct path equals navigation for Category
bool test_category_direct_vs_navigation() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? category = null;
    Entity? direct_doc = null;
    Entity? nav_doc = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // IMPORTANT: Create category FIRST so hooks are registered
    ((!)container).create_category_async.begin("published", "Post", "!draft", (obj, res) => {
        try {
            category = ((!)container).create_category_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || category == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Now create document - hooks will update the category index
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("draft", new Invercargill.NativeElement<bool?>(false), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Method 1: Direct path lookup
    engine.get_entity_async.begin(new EntityPath("/posts/published/post1"), (obj, res) => {
        try {
            direct_doc = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || direct_doc == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Method 2: Navigation via get_child_async
    ((!)category).get_child_async.begin("post1", (obj, res) => {
        try {
            nav_doc = ((!)category).get_child_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || nav_doc == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Both methods should return the same document (by path)
    if (((!)direct_doc).path.to_string() != ((!)nav_doc).path.to_string()) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)direct_doc).name != ((!)nav_doc).name) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 24: Comparison - direct path equals navigation for Catalogue group
bool test_catalogue_direct_vs_navigation() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? catalogue = null;
    Entity? direct_group = null;
    Entity? nav_group = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("posts", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // IMPORTANT: Create catalogue FIRST so hooks are registered
    ((!)container).create_catalogue_async.begin("by-author", "Post", "author", (obj, res) => {
        try {
            catalogue = ((!)container).create_catalogue_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || catalogue == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Now create document - hooks will update the catalogue index
    ((!)container).create_document_async.begin("post1", "Post", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("author", new Invercargill.NativeElement<string>("john"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Method 1: Direct path lookup
    engine.get_entity_async.begin(new EntityPath("/posts/by-author/john"), (obj, res) => {
        try {
            direct_group = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || direct_group == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Method 2: Navigation via get_child_async
    ((!)catalogue).get_child_async.begin("john", (obj, res) => {
        try {
            nav_group = ((!)catalogue).get_child_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || nav_group == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Both methods should return the same group (by path)
    if (((!)direct_group).path.to_string() != ((!)nav_group).path.to_string()) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    if (((!)direct_group).name != ((!)nav_group).name) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}

// Test 25: Comparison - direct path equals navigation for Index search
bool test_index_direct_vs_navigation() {
    string temp_dir = create_temp_dir();
    
    var engine = new EmbeddedEngine.with_path(temp_dir);
    
    var loop = new MainLoop();
    Entity? root = null;
    Entity? container = null;
    Entity? doc1 = null;
    Entity? index = null;
    Entity? direct_result = null;
    Entity? nav_result = null;
    Error? error = null;
    
    engine.get_root_async.begin((obj, res) => {
        try {
            root = engine.get_root_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || root == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create container
    ((!)root).create_container_async.begin("articles", (obj, res) => {
        try {
            container = ((!)root).create_container_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || container == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create document FIRST with searchable content
    ((!)container).create_document_async.begin("article1", "Article", (obj, res) => {
        try {
            doc1 = ((!)container).create_document_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || doc1 == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    ((!)doc1).set_entity_property_async.begin("title", new Invercargill.NativeElement<string>("Introduction to Vala"), (obj, res) => {
        try {
            ((!)doc1).set_entity_property_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Create index AFTER documents - populate_index() will be called internally
    ((!)container).create_index_async.begin("search", "Article", "title", (obj, res) => {
        try {
            index = ((!)container).create_index_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || index == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Explicitly populate the index (needed for tests)
    var index_impl = index as Implexus.Entities.Index;
    if (index_impl != null) {
        try {
            ((!)index_impl).populate_index();
        } catch (Error e) {
            cleanup_dir(temp_dir);
            return false;
        }
    }
    
    // Method 1: Direct path lookup
    engine.get_entity_async.begin(new EntityPath("/articles/search/*Vala*"), (obj, res) => {
        try {
            direct_result = engine.get_entity_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || direct_result == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Method 2: Navigation via get_child_async
    ((!)index).get_child_async.begin("*Vala*", (obj, res) => {
        try {
            nav_result = ((!)index).get_child_async.end(res);
        } catch (Error e) {
            error = e;
        }
        loop.quit();
    });
    loop.run();
    
    if (error != null || nav_result == null) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    // Both methods should return an IndexResult with the same path
    if (((!)direct_result).path.to_string() != ((!)nav_result).path.to_string()) {
        cleanup_dir(temp_dir);
        return false;
    }
    
    cleanup_dir(temp_dir);
    return true;
}