Method test_find_multi_diffs

tests/basic/test_udiff.py:71–115

(self)

        self.assertEqual(edit[1], ["-Original\n", "+Modified\n"])

    def test_find_multi_diffs(self):
        content = """
To implement the `--check-update` option, I will make the following changes:

1. Add the `--check-update` argument to the argument parser in `aider/main.py`.
2. Modify the `check_version` function in `aider/versioncheck.py` to return a boolean indicating whether an update is available.
3. Use the returned value from `check_version` in `aider/main.py` to set the exit status code when `--check-update` is used.

Here are the diffs for those changes:

```diff
--- aider/versioncheck.py
+++ aider/versioncheck.py
@@ ... @@
     except Exception as err:
         print_cmd(f"Error checking pypi for new version: {err}")
+        return False

--- aider/main.py
+++ aider/main.py
@@ ... @@
     other_group.add_argument(
         "--version",
         action="version",
         version=f"%(prog)s {__version__}",
         help="Show the version number and exit",
     )
+    other_group.add_argument(
+        "--check-update",
+        action="store_true",
+        help="Check for updates and return status in the exit code",
+        default=False,
+    )
     other_group.add_argument(
         "--apply",
         metavar="FILE",
```

These changes will add the `--check-update` option to the command-line interface and use the `check_version` function to determine if an update is available, exiting with status code `0` if no update is available and `1` if an update is available.
"""  # noqa: E501

        edits = find_diffs(content)
        dump(edits)
        self.assertEqual(len(edits), 2)
        self.assertEqual(len(edits[0][1]), 3)


if __name__ == "__main__":