Tests refactor

packages/api/tests/helpers/mock-repository.ts

@@ -0,0 +1,34 @@
+import { vi } from 'vitest';
+
+/**
+ * Dynamically creates a fully mocked repository from a repository class.
+ * Recursively walks the prototype chain (inheritance-aware) to gather all methods,
+ * and assigns them a Vitest mock function (vi.fn()).
+ *
+ * @param repoClass The repository class constructor to mock
+ * @returns An object with all methods mocked as vi.fn()
+ *
+ * @example
+ * const mockRepo = createMockRepository(ProductsRepository);
+ * mockRepo.findById.mockResolvedValue(mockProduct);
+ */
+export function createMockRepository<T>(
+  repoClass: new (...args: any[]) => T
+): Record<keyof T, any> {
+  const mock: Record<string, any> = {};
+  let proto = repoClass.prototype;
+
+  while (proto && proto !== Object.prototype) {
+    const methods = Object.getOwnPropertyNames(proto).filter(
+      (name) => name !== 'constructor' && typeof (proto as any)[name] === 'function'
+    );
+    for (const method of methods) {
+      if (!(method in mock)) {
+        mock[method] = vi.fn();
+      }
+    }
+    proto = Object.getPrototypeOf(proto);
+  }
+
+  return mock as Record<keyof T, any>;
+}