imageFilenames and imageFilename, backend integration tests, frontend tests, removed username references

frontend/src/setupTests.ts

@@ -3,3 +3,53 @@
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
 import '@testing-library/jest-dom';
+
+// Mock window.location for tests that use navigation
+const mockLocation = {
+  ...window.location,
+  href: 'http://localhost:3000',
+  pathname: '/',
+  assign: jest.fn(),
+  replace: jest.fn(),
+  reload: jest.fn(),
+};
+
+Object.defineProperty(window, 'location', {
+  value: mockLocation,
+  writable: true,
+});
+
+// Suppress console errors during tests (optional, comment out for debugging)
+const originalConsoleError = console.error;
+const originalConsoleWarn = console.warn;
+
+beforeAll(() => {
+  console.error = (...args: any[]) => {
+    // Filter out known React warnings during tests
+    if (
+      typeof args[0] === 'string' &&
+      (args[0].includes('Warning: ReactDOM.render is no longer supported') ||
+        args[0].includes('Warning: An update to') ||
+        args[0].includes('act(...)'))
+    ) {
+      return;
+    }
+    originalConsoleError.call(console, ...args);
+  };
+
+  console.warn = (...args: any[]) => {
+    // Filter out known warnings
+    if (
+      typeof args[0] === 'string' &&
+      args[0].includes('componentWillReceiveProps')
+    ) {
+      return;
+    }
+    originalConsoleWarn.call(console, ...args);
+  };
+});
+
+afterAll(() => {
+  console.error = originalConsoleError;
+  console.warn = originalConsoleWarn;
+});