test(11-01): add failing ResultsList spec + extend tender-radar-api client (RED)

Extends tender-radar-api.ts with the Tender type, listTenders(params) and fetchCoverage() (plain fetch, credentials:'include', matching the established fetchSourceConfig pattern — TanStack Query is not installed). Adds the RED-first ResultsList.test.tsx: render items with title/buyerName/deadline/value, "keine Wertangabe" for null estimatedValue (D-05), and an empty-state message. ResultsList.tsx does not exist yet. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-21 15:53:04 +02:00
parent 49622ba022
commit b55bb55c0e
2 changed files with 168 additions and 0 deletions
@@ -0,0 +1,97 @@
+import { cleanup, render, screen, waitFor } from '@testing-library/react';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+
+/**
+ * ResultsList.test — RED-first (TDD) proof for Task 3 (FILTER-01, UI-01/05).
+ * Mirrors the SourceConfigForm.test.tsx pattern: mock the api client
+ * module, render, assert via waitFor. next/navigation is mocked because
+ * ResultsList reads/writes URL searchParams for filter + sort state
+ * (Research: URL-Param-getriebener Client).
+ */
+
+const mockListTenders = vi.fn();
+
+vi.mock('@/lib/tender-radar-api', () => ({
+  listTenders: (...args: unknown[]) => mockListTenders(...args),
+}));
+
+const mockReplace = vi.fn();
+let mockSearchParams = new URLSearchParams();
+
+vi.mock('next/navigation', () => ({
+  useRouter: () => ({ replace: mockReplace }),
+  useSearchParams: () => mockSearchParams,
+}));
+
+afterEach(() => {
+  cleanup();
+  mockListTenders.mockReset();
+  mockReplace.mockReset();
+  mockSearchParams = new URLSearchParams();
+  vi.restoreAllMocks();
+});
+
+describe('ResultsList', () => {
+  it('fetches on mount and renders title, buyerName, deadline and value from listTenders items', async () => {
+    mockListTenders.mockResolvedValue({
+      items: [
+        {
+          id: 't1',
+          title: 'Sanierung Rathaus',
+          buyerName: 'Stadt Musterhausen',
+          deadlineAt: '2026-09-01T00:00:00.000Z',
+          estimatedValue: '150000.00',
+          publishedAt: '2026-07-01T00:00:00.000Z',
+        },
+      ],
+      total: 1,
+      page: 1,
+      limit: 20,
+    });
+
+    const { ResultsList } = await import('./ResultsList');
+    render(<ResultsList />);
+
+    await waitFor(() => {
+      expect(screen.getByText('Sanierung Rathaus')).toBeInTheDocument();
+    });
+    expect(screen.getByText('Stadt Musterhausen')).toBeInTheDocument();
+    expect(mockListTenders).toHaveBeenCalledTimes(1);
+  });
+
+  it('shows "keine Wertangabe" for a row with estimatedValue null (D-05 graceful handling)', async () => {
+    mockListTenders.mockResolvedValue({
+      items: [
+        {
+          id: 't2',
+          title: 'Straßenbau Projekt X',
+          buyerName: 'Landkreis Beispiel',
+          deadlineAt: null,
+          estimatedValue: null,
+          publishedAt: '2026-07-01T00:00:00.000Z',
+        },
+      ],
+      total: 1,
+      page: 1,
+      limit: 20,
+    });
+
+    const { ResultsList } = await import('./ResultsList');
+    render(<ResultsList />);
+
+    await waitFor(() => {
+      expect(screen.getByText('keine Wertangabe')).toBeInTheDocument();
+    });
+  });
+
+  it('renders an empty-state message when listTenders returns no items', async () => {
+    mockListTenders.mockResolvedValue({ items: [], total: 0, page: 1, limit: 20 });
+
+    const { ResultsList } = await import('./ResultsList');
+    render(<ResultsList />);
+
+    await waitFor(() => {
+      expect(screen.getByText(/Keine Ausschreibungen gefunden/i)).toBeInTheDocument();
+    });
+  });
+});