aider: Add a test that cycles through all the PARSERS values and calls get_parser on them.

# Aider chat conversation:

USER: add a test that cycles through all the `PARSERS` values and does get_parser on them

ASSISTANT: To add a test that cycles through all the `PARSERS` values and calls `filename_to_lang` on them, we need to modify the `tests/test_parsers.py` file.

Here is the step-by-step process:

1. Import the `PARSERS` dictionary and `filename_to_lang` function from `parsers.py` in `test_parsers.py`.
2.
^C KeyboardInterrupt

USER: I added these *read-write* files: /Users/gauthier/Projects/grep-ast/grep_ast/grep_ast.py

ASSISTANT: To add a test that cycles through all the `PARSERS` values and calls `get_parser` on them, we need to modify the `tests/test_parsers.py` file.

Here is the step-by-step process:

1. Import the `PARSERS` dictionary and `get_parser` function from `parsers.py` in `test_parsers.py`.
2. Create a new test function, let's call it `test_get_parser_for_all_parsers`.
3. Inside this function, iterate over all the values in the `PARSERS` dictionary.
4. For each value, call the `get_parser` function and assert that it does not return `None`.

Here is the *SEARCH/REPLACE block* for the changes:

```python
tests/test_parsers.py
<<<<<<< SEARCH
=======
import pytest
from grep_ast.parsers import PARSERS, get_parser

def test_get_parser_for_all_parsers():
    for lang in PARSERS.values():
        assert get_parser(lang) is not None
>>>>>>> REPLACE
```

This test will fail if `get_parser` returns `None` for any language in the `PARSERS` dictionary, indicating that there is no parser available for that language.

Author: Paul Gauthier

tests/test_parsers.py

@@ -0,0 +1,6 @@
+import pytest
+from grep_ast.parsers import PARSERS, get_parser
+
+def test_get_parser_for_all_parsers():
+    for lang in PARSERS.values():
+        assert get_parser(lang) is not None