Merge pull request #4688 from cloud-gov/chore-test-shared/GithubBuild…

…ShaLink-4669

Chore: test shared/GitHubBuildShaLink #4669

frontend/shared/GithubBuildShaLink.test.jsx

@@ -0,0 +1,58 @@
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import '@testing-library/jest-dom';
+
+import GithubBuildShaLink from './GithubBuildShaLink';
+
+const defaultBuild = {
+  clonedCommitSha: 'cloned_sha',
+  requestedCommitSha: 'requested_sha',
+};
+
+const defaultSite = {
+  owner: 'repo_owner',
+  repository: 'repo_name',
+};
+
+const defaultProps = { build: defaultBuild, site: defaultSite };
+
+describe('<GithubBuildShaLink/>', () => {
+  it('renders', () => {
+    const props = { ...defaultProps };
+    render(<GithubBuildShaLink {...props} />);
+
+    const anchor = screen.getByRole('link');
+
+    expect(anchor).toHaveClass('sha-link');
+    expect(anchor).toHaveAttribute('title', 'View commit on GitHub');
+  });
+  it('uses clonedCommitSha by default, if provided', () => {
+    const props = { ...defaultProps };
+    render(<GithubBuildShaLink {...props} />);
+
+    const anchor = screen.getByRole('link');
+
+    expect(anchor).toHaveAttribute(
+      'href',
+      'https://github.com/repo_owner/repo_name/commit/cloned_sha',
+    );
+    expect(anchor).toHaveTextContent('cloned_');
+  });
+  it('uses requestedCommitSha if clonedCommitSha is not provided', () => {
+    const props = { build: { requestedCommitSha: '1234567890' }, site: defaultSite };
+    render(<GithubBuildShaLink {...props} />);
+
+    const anchor = screen.getByRole('link');
+
+    expect(anchor).toHaveAttribute(
+      'href',
+      'https://github.com/repo_owner/repo_name/commit/1234567890',
+    );
+    expect(anchor).toHaveTextContent('1234567');
+  });
+  it('renders nothing if no sha is provided', () => {
+    const props = { build: {}, site: defaultSite };
+    const { container } = render(<GithubBuildShaLink {...props} />);
+    expect(container).toBeEmptyDOMElement();
+  });
+});