# 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: in `test_check_for_ctags_success` we need to mock `subprocess`.run differently. it will be called twice and needs to return different results for each call.
ASSISTANT: To modify the `test_check_for_ctags_success` method in the `tests/test_repomap.py` file, we need to change the way `subprocess.run` is mocked. It will be called twice and needs to return different results for each call.
Here are the steps to make the changes:
1. Import `MagicMock` from `unittest.mock`.
2. Replace the `mock_run.return_value` with `mock_run.side_effect` which is a list of `CompletedProcess` objects. The first one simulates a successful call to `ctags --version` and the second one simulates a successful call to `ctags -R`.
Here is the *edit block* for the changes:
```python
tests/test_repomap.py
<<<<<<< ORIGINAL
from unittest.mock import patch
from subprocess import CompletedProcess
def test_check_for_ctags_success(self):
with patch("subprocess.run") as mock_run:
mock_run.return_value = CompletedProcess(
args=["ctags", "--version"],
returncode=0,
stdout=(
b'{"_type": "tag", "name": "status", "path": "aider/main.py", "pattern": "/^ '
b' status = main()$/", "kind": "variable"}'
),
)
repo_map = RepoMap()
result = repo_map.check_for_ctags()
self.assertTrue(result)
=======
from unittest.mock import patch, MagicMock
from subprocess import CompletedProcess
def test_check_for_ctags_success(self):
with patch("subprocess.run") as mock_run:
mock_run.side_effect = [
CompletedProcess(
args=["ctags", "--version"],
returncode=0,
stdout=b"Universal Ctags 0.0.0(f25b4bb7)",
),
CompletedProcess(
args=["ctags", "-R"],
returncode=0,
stdout=b"",
),
]
repo_map = RepoMap()
result = repo_map.check_for_ctags()
self.assertTrue(result)
>>>>>>> UPDATED
```
This change will make the `test_check_for_ctags_success` method simulate two calls to `subprocess.run` with different results.
