test: cover likes timeline handling

tests/twitter-client-coverage.api.test.ts

@@ -17,6 +17,12 @@ type ResponseLike = {
 
 type TwitterClientApiPrivate = TwitterClient & {
   getBookmarksQueryIds: () => Promise<string[]>;
+  getLikesQueryIds: () => Promise<string[]>;
+  getCurrentUser: () => Promise<{
+    success: boolean;
+    user?: { id: string; username: string; name: string };
+    error?: string;
+  }>;
 };
 
 const makeResponse = (overrides: Partial<ResponseLike> = {}): ResponseLike => ({
@@ -204,4 +210,89 @@ describe('TwitterClient API coverage', () => {
       expect(result.error).toBe('HTTP 404');
     });
   });
+
+  describe('likes error paths', () => {
+    const stubCurrentUser = async () => ({
+      success: true,
+      user: { id: '123', username: 'tester', name: 'Tester' },
+    });
+
+    it('returns an error for non-ok responses', async () => {
+      const mockFetch = vi
+        .fn()
+        .mockResolvedValueOnce(makeResponse({ ok: false, status: 500, text: async () => 'down' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('HTTP 500');
+    });
+
+    it('returns API errors from payloads', async () => {
+      const mockFetch = vi.fn().mockResolvedValueOnce(
+        makeResponse({
+          json: async () => ({ errors: [{ message: 'bad' }] }),
+        }),
+      );
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('bad');
+    });
+
+    it('returns an error when fetching throws', async () => {
+      const mockFetch = vi.fn().mockRejectedValue(new Error('boom'));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toContain('boom');
+    });
+
+    it('returns unknown error when no query ids are available', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => [];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('Unknown error fetching likes');
+    });
+
+    it('returns the second attempt error after 404s', async () => {
+      const mockFetch = vi.fn().mockResolvedValue(makeResponse({ ok: false, status: 404, text: async () => 'nope' }));
+      global.fetch = mockFetch as unknown as typeof fetch;
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientApiPrivate;
+      clientPrivate.getCurrentUser = stubCurrentUser;
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('HTTP 404');
+    });
+  });
 });

tests/twitter-client.test.ts

@@ -9,6 +9,14 @@ describe('TwitterClient', () => {
     cookieHeader: 'auth_token=test_auth_token; ct0=test_ct0_token',
     source: 'test',
   };
+  type TwitterClientPrivate = TwitterClient & {
+    getCurrentUser: () => Promise<{
+      success: boolean;
+      user?: { id: string; username: string; name: string };
+      error?: string;
+    }>;
+    getLikesQueryIds: () => Promise<string[]>;
+  };
 
   afterEach(() => {
     global.fetch = originalFetch;
@@ -1144,6 +1152,102 @@ describe('TwitterClient', () => {
     });
   });
 
+  describe('likes', () => {
+    let mockFetch: ReturnType<typeof vi.fn>;
+
+    beforeEach(() => {
+      mockFetch = vi.fn();
+      global.fetch = mockFetch as unknown as typeof fetch;
+    });
+
+    it('fetches likes and parses tweet results', async () => {
+      mockFetch.mockResolvedValueOnce({
+        ok: true,
+        status: 200,
+        json: async () => ({
+          data: {
+            user: {
+              result: {
+                timeline: {
+                  timeline: {
+                    instructions: [
+                      {
+                        entries: [
+                          {
+                            content: {
+                              itemContent: {
+                                tweet_results: {
+                                  result: {
+                                    rest_id: '2',
+                                    legacy: {
+                                      full_text: 'liked',
+                                      created_at: '2024-01-01T00:00:00Z',
+                                      reply_count: 0,
+                                      retweet_count: 0,
+                                      favorite_count: 0,
+                                      conversation_id_str: '2',
+                                    },
+                                    core: {
+                                      user_results: {
+                                        result: {
+                                          rest_id: 'u2',
+                                          legacy: { screen_name: 'root', name: 'Root' },
+                                        },
+                                      },
+                                    },
+                                  },
+                                },
+                              },
+                            },
+                          },
+                        ],
+                      },
+                    ],
+                  },
+                },
+              },
+            },
+          },
+        }),
+      });
+
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({
+        success: true,
+        user: { id: '42', username: 'tester', name: 'Tester' },
+      });
+      clientPrivate.getLikesQueryIds = async () => ['test'];
+
+      const result = await client.getLikes(2);
+
+      expect(result.success).toBe(true);
+      expect(result.tweets?.[0].id).toBe('2');
+      expect(mockFetch).toHaveBeenCalledTimes(1);
+
+      const [url, options] = mockFetch.mock.calls[0];
+      expect(options.method).toBe('GET');
+      expect(String(url)).toContain('/Likes?');
+      const parsedVars = JSON.parse(new URL(url as string).searchParams.get('variables') as string);
+      expect(parsedVars.userId).toBe('42');
+      expect(parsedVars.count).toBe(2);
+      const parsedFeatures = JSON.parse(new URL(url as string).searchParams.get('features') as string);
+      expect(parsedFeatures.graphql_timeline_v2_bookmark_timeline).toBeUndefined();
+    });
+
+    it('returns an error when current user is unavailable', async () => {
+      const client = new TwitterClient({ cookies: validCookies });
+      const clientPrivate = client as unknown as TwitterClientPrivate;
+      clientPrivate.getCurrentUser = async () => ({ success: false, error: 'no user' });
+
+      const result = await client.getLikes(1);
+
+      expect(result.success).toBe(false);
+      expect(result.error).toBe('no user');
+      expect(mockFetch).not.toHaveBeenCalled();
+    });
+  });
+
   describe('conversation helpers', () => {
     let mockFetch: ReturnType<typeof vi.fn>;