git-integration-test-fixtures

name	git-integration-test-fixtures
description	Build real git source, bare remote, and local clone fixtures for CopilotBooster integration tests.

Git Integration Test Fixtures

Use when

• Testing WorkspaceCreationService or GitService end-to-end behavior.
• Need local clone behind remote by one or more commits.
• Need checked-out branch, no-upstream branch, or bad remote edge cases.

Fixture

Use tests/Integration/TestTools/GitTestRepo.cs.

using var repo = await GitTestRepo.CreateAsync(TestContext.Current.CancellationToken);
await repo.CreateRemoteBranchAsync("feature", TestContext.Current.CancellationToken);
var remoteTip = await repo.CommitAndPushAsync("feature", TestContext.Current.CancellationToken);

Pattern

1. Create source repo with main.
2. Clone it as a bare remote.
3. Clone bare remote as the local repo under test.
4. Push new commits from source after local clone exists.
5. Call product APIs against repo.LocalPath.
6. Assert refs through GitTestRepo.RevParseAsync or GitTestRepo.HeadAsync.

Rules

• Route git commands through GitService.RunGitAsync.
• Dispose GitTestRepo to delete all temp directories.
• Use a serialized collection when mutating Program._settings.
• For worktree tests, set Program._settings.WorkspacesDir = repo.WorkspacesPath.

Edge cases

• Checked-out branch blocks git fetch remote branch:branch; fallback must refresh remote-tracking refs before using origin/<branch>.
• No-upstream local branch should fetch fallback remote but keep local tip.
• Bogus remote should assert success=false, non-empty error, unchanged effective source ref.