init

src/modules/issue/application/use-cases/get-issue-stats/get-issue-stats.use-case.spec.ts

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+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import type { IIssueRepository } from '../../../domain/repositories/issue.repository.interface.js';
+import { GetIssueStatsUseCase } from './get-issue-stats.use-case.js';
+
+describe('GetIssueStatsUseCase', () => {
+  let repository: IIssueRepository;
+  let useCase: GetIssueStatsUseCase;
+
+  beforeEach(() => {
+    repository = {
+      findById: vi.fn(),
+      findByCKey: vi.fn(),
+      findAll: vi.fn(),
+      countByStatus: vi.fn(),
+      create: vi.fn(),
+      update: vi.fn(),
+      delete: vi.fn(),
+    };
+    useCase = new GetIssueStatsUseCase(repository);
+  });
+
+  it('returns counts for every known status, including those with zero issues', async () => {
+    vi.mocked(repository.countByStatus).mockResolvedValue([
+      { status: 'OPEN', count: 5 },
+      { status: 'DONE', count: 2 },
+    ]);
+
+    const stats = await useCase.execute('user-1');
+
+    expect(stats.total).toBe(7);
+    expect(stats.byStatus).toEqual([
+      { status: 'OPEN', label: 'Open', count: 5 },
+      { status: 'IN_PROGRESS', label: 'In progress', count: 0 },
+      { status: 'DONE', label: 'Done', count: 2 },
+      { status: 'CANCELLED', label: 'Cancelled', count: 0 },
+    ]);
+  });
+
+  it('returns all-zero stats when there are no issues', async () => {
+    vi.mocked(repository.countByStatus).mockResolvedValue([]);
+
+    const stats = await useCase.execute('user-1');
+
+    expect(stats.total).toBe(0);
+    expect(stats.byStatus.every((entry) => entry.count === 0)).toBe(true);
+  });
+});