Make directory context manager more robust

The test failed on macOS runners previously, due to an unresolved symbolic link

Author: bittner

cli_test_helpers/decorators.py

@@ -74,7 +74,7 @@ def __enter__(self):
         self.__prev_dir = os.getcwd()
         super().__enter__()
         os.chdir(self.name)
-        return self.name
+        return os.getcwd()
 
     def __exit__(self, exc_type, exc_value, traceback):
         """Return to the original directory before execution."""

tests/test_decorators.py

@@ -56,7 +56,7 @@ def test_random_directory_context():
     with RandomDirectoryContext() as random_dir:
         new_dir = os.getcwd()
 
-        assert new_dir == random_dir, "Does't behave like TemporaryDirectory"
+        assert new_dir == random_dir, "Doesn't behave like TemporaryDirectory"
         assert new_dir != before_dir, "Context not in a different file system location"
 
     after_dir = os.getcwd()