The test for `test_get_commit_message_with_custom_prompt` has been updated to correctly access the message content from the positional arguments of the `simple_send_with_retries` function call. This ensures that the test accurately reflects the implementation in the `GitRepo` class.
The new test case `test_get_commit_message_with_custom_prompt` ensures that when a custom `commit_prompt` is provided to the `GitRepo` constructor, it's used instead of the default prompt when generating commit messages. The test checks that:
1. The custom commit prompt is passed correctly to the `simple_send_with_retries` function.
2. The returned commit message is as expected.
3. The `simple_send_with_retries` function is called only once (since we're using a single model).
This new test case, along with the existing `test_get_commit_message_no_strip_unmatched_quotes` test, provides better coverage for the `get_commit_message` method in the `GitRepo` class.
