bugfix-329-it-ends-up-stuck-in-an-unknown-version-loop-if-no-version-is-detected-in-the-repository: Enhance test coverage for InitialSetupUseCase and UpdateTitleUseCase. Add tests to verify error handling when ensureDefaultVersion fails and ensure fallback title usage when getTitle returns undefined. Improve clarity and consistency in test cases.

Author: efraespada

src/usecase/actions/__tests__/initial_setup_use_case.test.ts

@@ -177,6 +177,15 @@ describe('InitialSetupUseCase', () => {
     expect(results[0].errors?.some((e) => String(e).includes('Failed to create tag'))).toBe(true);
   });
 
+  it('reports error when ensureDefaultVersion throws (e.g. getLatestTag fails)', async () => {
+    mockGetLatestTag.mockRejectedValue(new Error('network error'));
+    const param = baseParam();
+    const results = await useCase.invoke(param);
+    expect(results[0].success).toBe(false);
+    expect(results[0].errors?.some((e) => String(e).includes('Error ensuring default version'))).toBe(true);
+    expect(mockGetDefaultBranch).not.toHaveBeenCalled();
+  });
+
   it('returns failure when verifyGitHubAccess fails', async () => {
     mockGetUserFromToken.mockRejectedValue(new Error('Invalid token'));
     const param = baseParam();

src/usecase/steps/common/__tests__/update_title_use_case.test.ts

@@ -105,6 +105,32 @@ describe('UpdateTitleUseCase', () => {
     expect(results[0].executed).toBe(false);
   });
 
+  it('uses param.issue.title when getTitle returns undefined for issue', async () => {
+    mockGetTitle.mockResolvedValue(undefined);
+    mockUpdateTitleIssueFormat.mockResolvedValue('🚀 Fallback title');
+    const param = baseParam({
+      isIssue: true,
+      emoji: { emojiLabeledTitle: true, branchManagementEmoji: '' },
+      issue: { number: 1, title: 'Fallback title', branchManagementAlways: false },
+    });
+
+    const results = await useCase.invoke(param);
+
+    expect(results[0].success).toBe(true);
+    expect(results[0].executed).toBe(true);
+    expect(mockUpdateTitleIssueFormat).toHaveBeenCalledWith(
+      'o',
+      'r',
+      '',
+      'Fallback title',
+      1,
+      false,
+      '',
+      {},
+      't'
+    );
+  });
+
   it('returns failure when isPullRequest, emojiLabeledTitle, but getTitle returns undefined', async () => {
     mockGetTitle.mockResolvedValue(undefined);
     const param = baseParam({