code

src/routes/links.test.ts

@@ -0,0 +1,31 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const dbQueryMock = vi.fn();
+
+vi.mock('../lib/database.js', () => ({
+  db: {
+    query: dbQueryMock,
+  },
+}));
+
+import { resolveLinkTemplateId } from './links.js';
+
+describe('resolveLinkTemplateId', () => {
+  beforeEach(() => {
+    dbQueryMock.mockReset();
+  });
+
+  it('returns null when the provided template id does not exist', async () => {
+    dbQueryMock.mockResolvedValueOnce({ rows: [] });
+
+    await expect(resolveLinkTemplateId('00000000-0000-0000-0000-000000000000', null)).resolves.toBeNull();
+  });
+
+  it('falls back to template slug when the provided id is not usable', async () => {
+    dbQueryMock.mockResolvedValueOnce({ rows: [] });
+    dbQueryMock.mockResolvedValueOnce({ rows: [{ id: '11111111-1111-1111-1111-111111111111' }] });
+
+    await expect(resolveLinkTemplateId(null, 'default')).resolves.toBe('11111111-1111-1111-1111-111111111111');
+    expect(dbQueryMock).toHaveBeenNthCalledWith(2, 'SELECT id FROM link_templates WHERE slug = $1 LIMIT 1', ['default']);
+  });
+});