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__test__/git-command-manager.int.test.ts

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+import {GitCommandManager, Commit} from '../lib/git-command-manager'
+
+const REPO_PATH = '/git/local/repos/test-base'
+
+describe('git-command-manager integration tests', () => {
+  let git: GitCommandManager
+
+  beforeAll(async () => {
+    git = await GitCommandManager.create(REPO_PATH)
+    await git.checkout('main')
+  })
+
+  it('tests getCommit', async () => {
+    const parent = await git.getCommit('HEAD^')
+    const commit = await git.getCommit('HEAD')
+    expect(parent.subject).toEqual('initial commit')
+    expect(parent.changes).toEqual([
+      {mode: '100644', status: 'A', path: 'README.md'}
+    ])
+    expect(commit.subject).toEqual('add sparkles')
+    expect(commit.parents[0]).toEqual(parent.sha)
+    expect(commit.changes).toEqual([
+      {mode: '100644', status: 'M', path: 'README.md'}
+    ])
+  })
+})