fix: correct code_artist_number field mapping in getAlbumFromDB

apps/backend/services/library.service.ts

@@ -192,7 +192,7 @@ export const getAlbumFromDB = async (album_id: number) => {
     .select({
       id: library.id,
       code_letters: artists.code_letters,
-      code_artist_number: artists.code_letters,
+      code_artist_number: artists.code_artist_number,
       code_number: library.code_number,
       artist_name: artists.artist_name,
       album_title: library.album_title,

tests/unit/services/library.getAlbumFromDB.test.ts

@@ -0,0 +1,78 @@
+const CODE_LETTERS_SENTINEL = Symbol('artists.code_letters');
+const CODE_ARTIST_NUMBER_SENTINEL = Symbol('artists.code_artist_number');
+
+const mockSelect = jest.fn().mockReturnThis();
+const mockFrom = jest.fn().mockReturnThis();
+const mockInnerJoin = jest.fn().mockReturnThis();
+const mockWhere = jest.fn().mockReturnThis();
+const mockLimit = jest.fn().mockResolvedValue([
+  {
+    id: 1,
+    code_letters: 'RO',
+    code_artist_number: 42,
+    code_number: 1,
+    artist_name: 'Test Artist',
+    album_title: 'Test Album',
+    record_label: 'Test Label',
+    plays: 0,
+    add_date: '2024-01-01',
+    last_modified: new Date(),
+  },
+]);
+
+jest.mock('@wxyc/database', () => ({
+  db: {
+    select: mockSelect,
+    insert: jest.fn().mockReturnThis(),
+    update: jest.fn().mockReturnThis(),
+    delete: jest.fn().mockReturnThis(),
+  },
+  library: {
+    id: 'lib.id',
+    code_number: 'lib.code_number',
+    album_title: 'lib.album_title',
+    label: 'lib.label',
+    plays: 'lib.plays',
+    add_date: 'lib.add_date',
+    last_modified: 'lib.last_modified',
+    artist_id: 'lib.artist_id',
+  },
+  artists: {
+    id: 'artists.id',
+    code_letters: CODE_LETTERS_SENTINEL,
+    code_artist_number: CODE_ARTIST_NUMBER_SENTINEL,
+    artist_name: 'artists.artist_name',
+  },
+  genres: {},
+  format: {},
+  rotation: {},
+  library_artist_view: {},
+}));
+
+jest.mock('drizzle-orm', () => ({
+  eq: jest.fn((a, b) => ({ eq: [a, b] })),
+  sql: Object.assign(
+    jest.fn((strings: TemplateStringsArray, ...values: unknown[]) => ({ sql: strings, values })),
+    { raw: jest.fn((s: string) => ({ raw: s })) }
+  ),
+  desc: jest.fn((col) => ({ desc: col })),
+}));
+
+import { getAlbumFromDB } from '../../../apps/backend/services/library.service';
+
+describe('getAlbumFromDB', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+    mockSelect.mockReturnValue({ from: mockFrom });
+    mockFrom.mockReturnValue({ innerJoin: mockInnerJoin });
+    mockInnerJoin.mockReturnValue({ where: mockWhere });
+    mockWhere.mockReturnValue({ limit: mockLimit });
+  });
+
+  it('selects artists.code_artist_number for the code_artist_number field', async () => {
+    await getAlbumFromDB(1);
+
+    const selectArg = mockSelect.mock.calls[0][0];
+    expect(selectArg.code_artist_number).toBe(CODE_ARTIST_NUMBER_SENTINEL);
+  });
+});