add unit tests

Author: alizard0

workspaces/scorecard/plugins/scorecard-backend-module-dependabot/src/clients/DependabotClient.test.ts

@@ -15,7 +15,10 @@
  */
 
 import { ConfigReader } from '@backstage/config';
-import { DefaultGithubCredentialsProvider } from '@backstage/integration';
+import {
+  DefaultGithubCredentialsProvider,
+  ScmIntegrations,
+} from '@backstage/integration';
 import { DependabotClient } from './DependabotClient';
 
 const mockPaginate = jest.fn();
@@ -112,6 +115,22 @@ describe('DependabotClient', () => {
     expect(mockPaginate).not.toHaveBeenCalled();
   });
 
+  it('throws when GitHub API base URL is missing', async () => {
+    jest.spyOn(ScmIntegrations, 'fromConfig').mockReturnValueOnce({
+      github: {
+        byUrl: jest.fn().mockReturnValue({
+          config: {},
+        }),
+      },
+    } as any);
+    const clientWithoutApiBaseUrl = new DependabotClient(config, logger);
+
+    await expect(
+      clientWithoutApiBaseUrl.getAlerts(url, repo, 'critical'),
+    ).rejects.toThrow(`Missing GitHub API base URL for '${url}'`);
+    expect(mockPaginate).not.toHaveBeenCalled();
+  });
+
   it('throws when Octokit paginate fails', async () => {
     mockPaginate.mockRejectedValueOnce(new Error('GitHub API error: 403'));
 

workspaces/scorecard/plugins/scorecard-backend-module-dependabot/src/metricProviders/DependabotMetricProvider.test.ts

@@ -15,6 +15,7 @@
  */
 
 import { ConfigReader } from '@backstage/config';
+import { CATALOG_FILTER_EXISTS } from '@backstage/catalog-client';
 import type { Entity } from '@backstage/catalog-model';
 import { DependabotMetricProvider } from './DependabotMetricProvider';
 import { DEPENDABOT_SEVERITY_METRIC } from './DependabotConfig';
@@ -86,6 +87,8 @@ describe('DependabotMetricProvider', () => {
         expect(metric.description).toBe(
           DEPENDABOT_SEVERITY_METRIC[severity].description,
         );
+        expect(metric.type).toBe('number');
+        expect(metric.history).toBe(true);
       },
     );
   });
@@ -131,11 +134,10 @@ describe('DependabotMetricProvider', () => {
         mockLogger,
         'critical',
       );
-      const filter = provider.getCatalogFilter();
-      expect(
-        filter['metadata.annotations.github.com/project-slug'],
-      ).toBeDefined();
-      expect(filter['metadata.annotations.github.com/dependabot']).toBe('true');
+      expect(provider.getCatalogFilter()).toEqual({
+        'metadata.annotations.github.com/project-slug': CATALOG_FILTER_EXISTS,
+        'metadata.annotations.github.com/dependabot': 'true',
+      });
     });
   });
 
@@ -175,6 +177,20 @@ describe('DependabotMetricProvider', () => {
         "Invalid format of 'github.com/project-slug'",
       );
     });
+
+    it.each(['/repo', 'owner/'])(
+      'throws when project-slug has an empty owner or repo segment: %s',
+      projectSlug => {
+        const provider = new DependabotMetricProvider(
+          mockConfig,
+          mockLogger,
+          'critical',
+        );
+        expect(() => provider.getRepository(entity(projectSlug))).toThrow(
+          "Invalid format of 'github.com/project-slug'",
+        );
+      },
+    );
   });
 
   describe('calculateMetric', () => {
@@ -214,5 +230,23 @@ describe('DependabotMetricProvider', () => {
       );
       expect(await provider.calculateMetric(entity())).toBe(0);
     });
+
+    it('propagates errors when getAlerts fails', async () => {
+      mockGetAlerts.mockRejectedValueOnce(new Error('dependabot unavailable'));
+      const provider = new DependabotMetricProvider(
+        mockConfig,
+        mockLogger,
+        'critical',
+      );
+
+      await expect(provider.calculateMetric(entity())).rejects.toThrow(
+        'dependabot unavailable',
+      );
+      expect(mockGetAlerts).toHaveBeenCalledWith(
+        'https://github.com/owner/repo',
+        { owner: 'owner', repo: 'repo' },
+        'critical',
+      );
+    });
   });
 });