# Context:
USER: add a test for `AutoCompleter` that passes in a non-existant file. make sure self.words is empty.
ASSISTANT: To add a test for `AutoCompleter` that passes in a non-existent file, we need to modify the `tests/test_io.py` file. We will add a new test method `test_autocompleter_with_non_existent_file` in the `TestInputOutput` class.
Here is the change:
```python
tests/test_io.py
<<<<<<< ORIGINAL
import os
import unittest
from unittest.mock import patch
from aider.io import InputOutput
class TestInputOutput(unittest.TestCase):
def test_no_color_environment_variable(self):
with patch.dict(os.environ, {"NO_COLOR": "1"}):
io = InputOutput()
self.assertFalse(io.pretty)
if __name__ == "__main__":
unittest.main()
=======
import os
import unittest
from unittest.mock import patch
from aider.io import InputOutput, AutoCompleter
class TestInputOutput(unittest.TestCase):
def test_no_color_environment_variable(self):
with patch.dict(os.environ, {"NO_COLOR": "1"}):
io = InputOutput()
self.assertFalse(io.pretty)
def test_autocompleter_with_non_existent_file(self):
root = ""
rel_fnames = ["non_existent_file"]
addable_rel_fnames = []
commands = None
autocompleter = AutoCompleter(root, rel_fnames, addable_rel_fnames, commands)
self.assertEqual(autocompleter.words, set())
if __name__ == "__main__":
unittest.main()
>>>>>>> UPDATED
```
This new test creates an instance of `AutoCompleter` with a non-existent file and checks that `self.words` is an empty set.
# Context:
USER: add a test for NO_COLOR
ASSISTANT: To add a test for the `NO_COLOR` environment variable, we will create a new test function in the `tests/test_io.py` file. Since this file does not exist, we will create it first.
```python
tests/test_io.py
<<<<<<< ORIGINAL
=======
import os
import unittest
from unittest.mock import patch
from aider.io import InputOutput
class TestInputOutput(unittest.TestCase):
def test_no_color_environment_variable(self):
with patch.dict(os.environ, {"NO_COLOR": "1"}):
io = InputOutput()
self.assertFalse(io.pretty)
if __name__ == "__main__":
unittest.main()
>>>>>>> UPDATED
```
This test function checks if the `pretty` attribute of the `InputOutput` class is set to `False` when the `NO_COLOR` environment variable is set.
