aider: Added a test that creates a temporary directory, initializes a git repository there, adds three empty files, creates a Coder object on that directory, and asserts that coder.get_tracked_files() returns the three filenames.

# Aider chat conversation:

USER: make a test which creates a tempdir and inits a git repo there. it should add 3 empty files with the filenames below. the test should create a Coder on that and make sure that coder.get_tracked_files() returns the 3 filenames. Here are the filenames: README.md
doc/fänny_dirname/README.md
doc/systemüberblick.md

ASSISTANT: To create this test, we need to modify the `tests/test_coder.py` file. We will add a new test method named `test_get_tracked_files` in the `TestCoder` class. This method will create a temporary directory, initialize a git repository there, add three empty files, create a `Coder` object on that directory, and assert that `coder.get_tracked_files()` returns the three filenames.

Here is the code change:

```python
tests/test_coder.py
<<<<<<< ORIGINAL
    if __name__ == "__main__":
        unittest.main()
=======
    def test_get_tracked_files(self):
        # Create a temporary directory
        tempdir = Path(tempfile.mkdtemp())

        # Initialize a git repository in the temporary directory
        repo = git.Repo.init(tempdir)

        # Create three empty files and add them to the git repository
        filenames = ["README.md", "doc/fänny_dirname/README.md", "doc/systemüberblick.md"]
        for filename in filenames:
            (tempdir / filename).touch()
            repo.git.add(filename)

        # Create a Coder object on the temporary directory
        coder = Coder.create(models.GPT4, None, io=InputOutput(), openai_api_key="fake_key", root=tempdir)

        # Assert that coder.get_tracked_files() returns the three filenames
        self.assertEqual(set(coder.get_tracked_files()), set(filenames))

    if __name__ == "__main__":
        unittest.main()
>>>>>>> UPDATED
```

This code assumes that the `Coder` class has a `get_tracked_files` method that returns the filenames of the tracked files in the git repository. If such a method does not exist, it should be implemented in the `Coder` class.

tests/test_coder.py

@@ -360,5 +360,24 @@ class TestCoder(unittest.TestCase):
         with self.assertRaises(openai.error.InvalidRequestError):
             coder.run(with_message="hi")
 
+    def test_get_tracked_files(self):
+        # Create a temporary directory
+        tempdir = Path(tempfile.mkdtemp())
+
+        # Initialize a git repository in the temporary directory
+        repo = git.Repo.init(tempdir)
+
+        # Create three empty files and add them to the git repository
+        filenames = ["README.md", "doc/fänny_dirname/README.md", "doc/systemüberblick.md"]
+        for filename in filenames:
+            (tempdir / filename).touch()
+            repo.git.add(filename)
+
+        # Create a Coder object on the temporary directory
+        coder = Coder.create(models.GPT4, None, io=InputOutput(), openai_api_key="fake_key", root=tempdir)
+
+        # Assert that coder.get_tracked_files() returns the three filenames
+        self.assertEqual(set(coder.get_tracked_files()), set(filenames))
+
     if __name__ == "__main__":
         unittest.main()