chore: add test for updateChangelog

Author: legobeat

src/update-changelog.test.ts

@@ -0,0 +1,51 @@
+import _outdent from 'outdent';
+
+import { updateChangelog } from './update-changelog';
+
+const outdent = _outdent({ trimTrailingNewline: false });
+
+describe('updateChangelog', () => {
+  it('should call git fetch by default', () => {
+    const cmdMock = jest.fn();
+    updateChangelog({
+      changelogContent: outdent`
+        # Changelog
+        All notable changes to this project will be documented in this file.
+
+        The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+        and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+        ## [Unreleased]
+
+        [Unreleased]:https://github.com/ExampleUsernameOrOrganization/ExampleRepository/
+        `,
+      isReleaseCandidate: true,
+      repoUrl:
+        'https://github.com/ExampleUsernameOrOrganization/ExampleRepository',
+      run: cmdMock,
+    });
+    expect(cmdMock).toHaveBeenCalledWith('git', ['fetch', '--tags'])
+  });
+  it('should not call git fetch when ', () => {
+    const cmdMock = jest.fn();
+    updateChangelog({
+      changelogContent: outdent`
+        # Changelog
+        All notable changes to this project will be documented in this file.
+
+        The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+        and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+        ## [Unreleased]
+
+        [Unreleased]:https://github.com/ExampleUsernameOrOrganization/ExampleRepository/
+        `,
+      isReleaseCandidate: true,
+      repoUrl:
+        'https://github.com/ExampleUsernameOrOrganization/ExampleRepository',
+      fetchRemote: false,
+      run: cmdMock,
+    });
+    expect(cmdMock).not.toHaveBeenCalledWith(['git'], ['fetch', '--tags'])
+  });
+});