Neo4j Memory Server

/** * MCP Server Entry Point Tests - Production Coverage * Single responsibility: Test MCP tool initialization and handler logic * * THE IMPLEMENTOR'S RULE: Test production MCP server startup and tool execution */ import { describe, it, expect, beforeEach, vi } from 'vitest'; // Mock all the MCP handlers before importing the main module vi.mock('../../src/application/mcp-handlers/mcp-memory-handler'); vi.mock('../../src/application/mcp-handlers/mcp-observation-handler'); vi.mock('../../src/application/mcp-handlers/mcp-relation-handler'); vi.mock('../../src/application/mcp-handlers/mcp-database-handler'); vi.mock('../../src/container/di-container'); describe('MCP Server Entry Point - Production Coverage', () => { let mockMemoryHandler: any; let mockObservationHandler: any; let mockRelationHandler: any; let mockDatabaseHandler: any; let mockContainer: any; beforeEach(async () => { vi.clearAllMocks(); // Mock handlers mockMemoryHandler = { handleMemoryManage: vi.fn(), handleMemoryRetrieve: vi.fn(), handleMemorySearch: vi.fn() }; mockObservationHandler = { handleObservationManage: vi.fn() }; mockRelationHandler = { handleRelationManage: vi.fn() }; mockDatabaseHandler = { handleDatabaseSwitch: vi.fn() }; mockContainer = { initializeDatabase: vi.fn().mockResolvedValue(undefined) }; // Mock the handler imports const { McpMemoryHandler } = await import('../../src/application/mcp-handlers/mcp-memory-handler'); const { McpObservationHandler } = await import('../../src/application/mcp-handlers/mcp-observation-handler'); const { McpRelationHandler } = await import('../../src/application/mcp-handlers/mcp-relation-handler'); const { McpDatabaseHandler } = await import('../../src/application/mcp-handlers/mcp-database-handler'); const { DIContainer } = await import('../../src/container/di-container'); (McpMemoryHandler as any).mockImplementation(() => mockMemoryHandler); (McpObservationHandler as any).mockImplementation(() => mockObservationHandler); (McpRelationHandler as any).mockImplementation(() => mockRelationHandler); (McpDatabaseHandler as any).mockImplementation(() => mockDatabaseHandler); (DIContainer.getInstance as any).mockReturnValue(mockContainer); }); describe('Memory Management Tool', () => { it('should handle memory creation requests', async () => { // Arrange const mockRequest = { operation: 'create' as const, memories: [ { name: 'Test Memory', memoryType: 'project', metadata: { status: 'active' }, observations: ['Test observation'] } ] }; const expectedResponse = { success: true, results: [{ id: 'test-123', status: 'created' }], summary: { requested: 1, succeeded: 1, failed: 0 } }; mockMemoryHandler.handleMemoryManage.mockResolvedValue(expectedResponse); // Act const result = await mockMemoryHandler.handleMemoryManage(mockRequest); // Assert expect(mockMemoryHandler.handleMemoryManage).toHaveBeenCalledWith(mockRequest); expect(result).toEqual(expectedResponse); }); it('should handle memory deletion requests', async () => { // Arrange const mockRequest = { operation: 'delete' as const, identifiers: ['delete-123', 'delete-456'] }; mockMemoryHandler.handleMemoryManage.mockResolvedValue({ success: true, results: [ { id: 'delete-123', status: 'deleted' }, { id: 'delete-456', status: 'deleted' } ] }); // Act const result = await mockMemoryHandler.handleMemoryManage(mockRequest); // Assert expect(result.results).toHaveLength(2); expect(result.results[0].status).toBe('deleted'); expect(result.results[1].status).toBe('deleted'); }); it('should handle memory management errors', async () => { // Arrange const mockRequest = { operation: 'create' as const, memories: [{ name: 'Invalid Memory' }] }; mockMemoryHandler.handleMemoryManage.mockRejectedValue(new Error('Validation failed')); // Act & Assert await expect(mockMemoryHandler.handleMemoryManage(mockRequest)) .rejects.toThrow('Validation failed'); }); }); describe('Memory Search Tool', () => { it('should execute search with all parameters', async () => { // Arrange const expectedResponse = { memories: [ { id: 'search-123', name: 'Search Result', memoryType: 'project', observations: [], score: 0.85 } ], _meta: { database: 'test-db', total: 1, query: 'test query' } }; mockMemoryHandler.handleMemorySearch.mockResolvedValue(expectedResponse); // Act const result = await mockMemoryHandler.handleMemorySearch( 'test query', 25, false, ['project', 'task'], 0.3 ); // Assert expect(mockMemoryHandler.handleMemorySearch).toHaveBeenCalledWith( 'test query', 25, false, ['project', 'task'], 0.3 ); expect(result.memories[0].score).toBe(0.85); }); it('should handle search errors', async () => { // Arrange mockMemoryHandler.handleMemorySearch.mockRejectedValue(new Error('Search failed')); // Act & Assert await expect(mockMemoryHandler.handleMemorySearch('failing query', 10, true)) .rejects.toThrow('Search failed'); }); }); describe('Observation Management Tool', () => { it('should add observations to memory', async () => { // Arrange const observationRequest = { operation: 'add' as const, observations: [ { memoryId: 'obs-123', contents: ['New observation 1', 'New observation 2'] } ] }; const expectedResponse = { success: true, results: [ { memoryId: 'obs-123', status: 'success', observations: { requested: 2, processed: 2 } } ], summary: { memories_processed: 1, observations_processed: 2 } }; mockObservationHandler.handleObservationManage.mockResolvedValue(expectedResponse); // Act const result = await mockObservationHandler.handleObservationManage(observationRequest); // Assert expect(mockObservationHandler.handleObservationManage).toHaveBeenCalledWith(observationRequest); expect(result.results[0].observations.processed).toBe(2); }); it('should handle observation management errors', async () => { // Arrange const invalidRequest = { operation: 'add' as const, observations: [{ memoryId: 'invalid', contents: [] }] }; mockObservationHandler.handleObservationManage.mockRejectedValue( new Error('Memory not found') ); // Act & Assert await expect(mockObservationHandler.handleObservationManage(invalidRequest)) .rejects.toThrow('Memory not found'); }); }); describe('Relation Management Tool', () => { it('should create enhanced relations', async () => { // Arrange const relationRequest = { operation: 'create' as const, relations: [ { fromId: 'rel-from-123', toId: 'rel-to-456', relationType: 'INFLUENCES', strength: 0.8, source: 'agent' as const } ] }; const expectedResponse = { success: true, results: [ { fromId: 'rel-from-123', toId: 'rel-to-456', relationType: 'INFLUENCES', status: 'created' } ], summary: { requested: 1, succeeded: 1, failed: 0 } }; mockRelationHandler.handleRelationManage.mockResolvedValue(expectedResponse); // Act const result = await mockRelationHandler.handleRelationManage(relationRequest); // Assert expect(mockRelationHandler.handleRelationManage).toHaveBeenCalledWith(relationRequest); expect(result.results[0].status).toBe('created'); }); it('should validate relation strength parameters', async () => { // Arrange const invalidRequest = { operation: 'create' as const, relations: [ { fromId: 'test', toId: 'test2', relationType: 'INVALID', strength: 1.5 } ] }; mockRelationHandler.handleRelationManage.mockRejectedValue( new Error('Strength must be between 0.0 and 1.0') ); // Act & Assert await expect(mockRelationHandler.handleRelationManage(invalidRequest)) .rejects.toThrow('Strength must be between 0.0 and 1.0'); }); }); describe('Database Switch Tool', () => { it('should switch database successfully', async () => { // Arrange const databaseName = 'new-database'; const expectedResponse = { previousDatabase: 'old-database', currentDatabase: 'new-database', created: false }; mockDatabaseHandler.handleDatabaseSwitch.mockResolvedValue(expectedResponse); // Act const result = await mockDatabaseHandler.handleDatabaseSwitch(databaseName); // Assert expect(mockDatabaseHandler.handleDatabaseSwitch).toHaveBeenCalledWith(databaseName); expect(result.currentDatabase).toBe('new-database'); }); it('should handle database switch errors', async () => { // Arrange mockDatabaseHandler.handleDatabaseSwitch.mockRejectedValue( new Error('Database switch failed') ); // Act & Assert await expect(mockDatabaseHandler.handleDatabaseSwitch('invalid-db')) .rejects.toThrow('Database switch failed'); }); }); describe('Handler Initialization', () => { it('should initialize database during handler creation', async () => { // Test that database initialization happens expect(mockContainer.initializeDatabase).toBeDefined(); await mockContainer.initializeDatabase(); expect(mockContainer.initializeDatabase).toHaveBeenCalled(); }); it('should handle database initialization failure', async () => { // Arrange mockContainer.initializeDatabase.mockRejectedValue(new Error('Database initialization failed')); // Act & Assert await expect(mockContainer.initializeDatabase()).rejects.toThrow('Database initialization failed'); }); }); });