aider: Set the git user name and email in the get_tracked_files test.

# Aider chat conversation:

USER: set the git user name and email in the `get_tracked_files` test

ASSISTANT: To set the git user name and email in the `get_tracked_files` test, we need to modify the `tests/test_coder.py` file. We will add two lines of code to set the git user name and email after initializing the git repository.

Here is the change:

```python
tests/test_coder.py
<<<<<<< ORIGINAL
        # Initialize a git repository in the temporary directory
        repo = git.Repo.init(tempdir)
=======
        # Initialize a git repository in the temporary directory and set user name and email
        repo = git.Repo.init(tempdir)
        repo.config_writer().set_value("user", "name", "Test User").release()
        repo.config_writer().set_value("user", "email", "testuser@example.com").release()
>>>>>>> UPDATED
```

This change sets the git user name to "Test User" and the email to "testuser@example.com".

tests/test_coder.py

@@ -364,8 +364,10 @@ class TestCoder(unittest.TestCase):
         # Create a temporary directory
         tempdir = Path(tempfile.mkdtemp())
 
-        # Initialize a git repository in the temporary directory
+        # Initialize a git repository in the temporary directory and set user name and email
         repo = git.Repo.init(tempdir)
+        repo.config_writer().set_value("user", "name", "Test User").release()
+        repo.config_writer().set_value("user", "email", "testuser@example.com").release()
 
         # Create three empty files and add them to the git repository
         filenames = ["README.md", "subdir/fänny.md", "systemüber/blick.md", 'file"with"quotes.txt']