From: Victor Engmark <victor@engmark.name>
Date: Sun, 27 Apr 2025 08:18:42 GMT
Subject: Workflow for bisecting with test in a branch
Message-ID: <02671927-2e65-4bd3-904b-b564849d1fa5@engmark.name>

I'd like to bisect using a test I've written in a different branch from 
the one I'm bisecting. But to do `git bisect run ./test.bash` I have to 
keep the new test file and an old test suite file the same during the 
whole `bisect` process. This turned out pretty cumbersome:

test.bash:

```
#!/usr/bin/env bash

set -o errexit

git show my-test-branch:test-suite-path > test-suite-path
mkdir -p test-dir
git show my-test-branch:test-dir/test-file > test-dir/test-file

run_test || exit_code=$?
git checkout .
exit "${exit_code-0}"
```

Console session:

```
git bisect start my-test-branch known-good-ancestor
git bisect run ./test.bash
```

Is there a more streamlined way to achieve the same thing, that is, 
forcing some checked-in files to not change while bisecting?

Kind regards
Victor Engmark