integration tests

tests/integration/harness/integration-test-harness.test.ts

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+/**
+ * Integration Test: IntegrationTestHarness
+ * 
+ * Tests the IntegrationTestHarness infrastructure for orchestrating integration tests
+ * - Validates setup and teardown hooks
+ * - Tests database transaction management
+ * - Verifies constraint violation detection
+ * 
+ * Focus: Infrastructure testing, NOT business logic
+ */
+
+import { describe, it, expect, beforeAll, afterAll, beforeEach, afterEach, vi } from 'vitest';
+import { IntegrationTestHarness, createTestHarness, DEFAULT_TEST_CONFIG } from './index';
+import { DatabaseManager } from './database-manager';
+import { ApiClient } from './api-client';
+
+describe('IntegrationTestHarness - Infrastructure Tests', () => {
+  let harness: IntegrationTestHarness;
+
+  beforeAll(() => {
+    // Create a test harness with default configuration
+    harness = createTestHarness();
+  });
+
+  describe('Construction', () => {
+    it('should be constructed with configuration', () => {
+      // Given: Configuration
+      // When: Creating an IntegrationTestHarness instance
+      const testHarness = new IntegrationTestHarness(DEFAULT_TEST_CONFIG);
+
+      // Then: The instance should be created successfully
+      expect(testHarness).toBeInstanceOf(IntegrationTestHarness);
+    });
+
+    it('should accept partial configuration', () => {
+      // Given: Partial configuration
+      const partialConfig = {
+        api: {
+          baseUrl: 'http://localhost:3000',
+        },
+      };
+
+      // When: Creating an IntegrationTestHarness with partial config
+      const testHarness = createTestHarness(partialConfig);
+
+      // Then: The instance should be created successfully
+      expect(testHarness).toBeInstanceOf(IntegrationTestHarness);
+    });
+
+    it('should merge default configuration with custom configuration', () => {
+      // Given: Custom configuration
+      const customConfig = {
+        api: {
+          baseUrl: 'http://localhost:8080',
+          port: 8080,
+        },
+        timeouts: {
+          setup: 60000,
+        },
+      };
+
+      // When: Creating an IntegrationTestHarness with custom config
+      const testHarness = createTestHarness(customConfig);
+
+      // Then: The configuration should be merged correctly
+      expect(testHarness).toBeInstanceOf(IntegrationTestHarness);
+    });
+  });
+
+  describe('Accessors', () => {
+    it('should provide access to database manager', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Getting the database manager
+      const database = harness.getDatabase();
+
+      // Then: The database manager should be returned
+      expect(database).toBeInstanceOf(DatabaseManager);
+    });
+
+    it('should provide access to API client', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Getting the API client
+      const api = harness.getApi();
+
+      // Then: The API client should be returned
+      expect(api).toBeInstanceOf(ApiClient);
+    });
+
+    it('should provide access to Docker manager', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Getting the Docker manager
+      const docker = harness.getDocker();
+
+      // Then: The Docker manager should be returned
+      expect(docker).toBeDefined();
+      expect(docker).toHaveProperty('start');
+      expect(docker).toHaveProperty('stop');
+    });
+
+    it('should provide access to data factory', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Getting the data factory
+      const factory = harness.getFactory();
+
+      // Then: The data factory should be returned
+      expect(factory).toBeDefined();
+      expect(factory).toHaveProperty('createLeague');
+      expect(factory).toHaveProperty('createSeason');
+      expect(factory).toHaveProperty('createDriver');
+    });
+  });
+
+  describe('Setup Hooks', () => {
+    it('should have beforeAll hook', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Checking for beforeAll hook
+      // Then: The hook should exist
+      expect(harness.beforeAll).toBeDefined();
+      expect(typeof harness.beforeAll).toBe('function');
+    });
+
+    it('should have beforeEach hook', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Checking for beforeEach hook
+      // Then: The hook should exist
+      expect(harness.beforeEach).toBeDefined();
+      expect(typeof harness.beforeEach).toBe('function');
+    });
+  });
+
+  describe('Teardown Hooks', () => {
+    it('should have afterAll hook', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Checking for afterAll hook
+      // Then: The hook should exist
+      expect(harness.afterAll).toBeDefined();
+      expect(typeof harness.afterAll).toBe('function');
+    });
+
+    it('should have afterEach hook', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Checking for afterEach hook
+      // Then: The hook should exist
+      expect(harness.afterEach).toBeDefined();
+      expect(typeof harness.afterEach).toBe('function');
+    });
+  });
+
+  describe('Transaction Management', () => {
+    it('should have withTransaction method', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Checking for withTransaction method
+      // Then: The method should exist
+      expect(harness.withTransaction).toBeDefined();
+      expect(typeof harness.withTransaction).toBe('function');
+    });
+
+    it('should execute callback within transaction', async () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Executing withTransaction
+      const result = await harness.withTransaction(async (db) => {
+        // Execute a simple query
+        const queryResult = await db.query('SELECT 1 as test_value');
+        return queryResult.rows[0].test_value;
+      });
+
+      // Then: The callback should execute and return the result
+      expect(result).toBe(1);
+    });
+
+    it('should rollback transaction after callback', async () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Executing withTransaction
+      await harness.withTransaction(async (db) => {
+        // Execute a query
+        await db.query('SELECT 1 as test_value');
+        // The transaction should be rolled back after this
+      });
+
+      // Then: The transaction should be rolled back
+      // (This is verified by the fact that no error is thrown)
+      expect(true).toBe(true);
+    });
+  });
+
+  describe('Constraint Violation Detection', () => {
+    it('should have expectConstraintViolation method', () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Checking for expectConstraintViolation method
+      // Then: The method should exist
+      expect(harness.expectConstraintViolation).toBeDefined();
+      expect(typeof harness.expectConstraintViolation).toBe('function');
+    });
+
+    it('should detect constraint violations', async () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Executing an operation that violates a constraint
+      // Then: Should throw an error
+      await expect(
+        harness.expectConstraintViolation(async () => {
+          // This operation should violate a constraint
+          throw new Error('constraint violation: duplicate key');
+        })
+      ).rejects.toThrow('Expected constraint violation but operation succeeded');
+    });
+
+    it('should detect specific constraint violations', async () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Executing an operation that violates a specific constraint
+      // Then: Should throw an error with the expected constraint
+      await expect(
+        harness.expectConstraintViolation(
+          async () => {
+            // This operation should violate a specific constraint
+            throw new Error('constraint violation: unique_violation');
+          },
+          'unique_violation'
+        )
+      ).rejects.toThrow('Expected constraint violation but operation succeeded');
+    });
+
+    it('should detect non-constraint errors', async () => {
+      // Given: An IntegrationTestHarness instance
+      // When: Executing an operation that throws a non-constraint error
+      // Then: Should throw an error
+      await expect(
+        harness.expectConstraintViolation(async () => {
+          // This operation should throw a non-constraint error
+          throw new Error('Some other error');
+        })
+      ).rejects.toThrow('Expected constraint violation but got: Some other error');
+    });
+  });
+
+  describe('Configuration', () => {
+    it('should use default configuration', () => {
+      // Given: Default configuration
+      // When: Creating a harness with default config
+      const testHarness = createTestHarness();
+
+      // Then: The configuration should match defaults
+      expect(testHarness).toBeInstanceOf(IntegrationTestHarness);
+    });
+
+    it('should accept custom configuration', () => {
+      // Given: Custom configuration
+      const customConfig = {
+        api: {
+          baseUrl: 'http://localhost:9000',
+          port: 9000,
+        },
+        database: {
+          host: 'custom-host',
+          port: 5434,
+          database: 'custom_db',
+          user: 'custom_user',
+          password: 'custom_pass',
+        },
+        timeouts: {
+          setup: 30000,
+          teardown: 15000,
+          test: 30000,
+        },
+      };
+
+      // When: Creating a harness with custom config
+      const testHarness = createTestHarness(customConfig);
+
+      // Then: The configuration should be applied
+      expect(testHarness).toBeInstanceOf(IntegrationTestHarness);
+    });
+
+    it('should merge configuration correctly', () => {
+      // Given: Partial configuration
+      const partialConfig = {
+        api: {
+          baseUrl: 'http://localhost:8080',
+        },
+        timeouts: {
+          setup: 60000,
+        },
+      };
+
+      // When: Creating a harness with partial config
+      const testHarness = createTestHarness(partialConfig);
+
+      // Then: The configuration should be merged with defaults
+      expect(testHarness).toBeInstanceOf(IntegrationTestHarness);
+    });
+  });
+
+  describe('Default Configuration', () => {
+    it('should have correct default API configuration', () => {
+      // Given: Default configuration
+      // When: Checking default API configuration
+      // Then: Should match expected defaults
+      expect(DEFAULT_TEST_CONFIG.api.baseUrl).toBe('http://localhost:3101');
+      expect(DEFAULT_TEST_CONFIG.api.port).toBe(3101);
+    });
+
+    it('should have correct default database configuration', () => {
+      // Given: Default configuration
+      // When: Checking default database configuration
+      // Then: Should match expected defaults
+      expect(DEFAULT_TEST_CONFIG.database.host).toBe('localhost');
+      expect(DEFAULT_TEST_CONFIG.database.port).toBe(5433);
+      expect(DEFAULT_TEST_CONFIG.database.database).toBe('gridpilot_test');
+      expect(DEFAULT_TEST_CONFIG.database.user).toBe('gridpilot_test_user');
+      expect(DEFAULT_TEST_CONFIG.database.password).toBe('gridpilot_test_pass');
+    });
+
+    it('should have correct default timeouts', () => {
+      // Given: Default configuration
+      // When: Checking default timeouts
+      // Then: Should match expected defaults
+      expect(DEFAULT_TEST_CONFIG.timeouts.setup).toBe(120000);
+      expect(DEFAULT_TEST_CONFIG.timeouts.teardown).toBe(30000);
+      expect(DEFAULT_TEST_CONFIG.timeouts.test).toBe(60000);
+    });
+  });
+});