tests

frontend/src/__tests__/setup.ts

@@ -0,0 +1,28 @@
+/**
+ * Test Setup
+ * Phase 5-7-9: Test Configuration
+ */
+import { expect, afterEach } from 'vitest';
+import { cleanup } from '@testing-library/react';
+import '@testing-library/jest-dom';
+
+// Cleanup after each test
+afterEach(() => {
+  cleanup();
+});
+
+// Mock window.matchMedia
+Object.defineProperty(window, 'matchMedia', {
+  writable: true,
+  value: (query: string) => ({
+    matches: false,
+    media: query,
+    onchange: null,
+    addListener: () => {},
+    removeListener: () => {},
+    addEventListener: () => {},
+    removeEventListener: () => {},
+    dispatchEvent: () => {},
+  }),
+});
+