Uploading current code for some discussion

Author: chalmerlowe

tests/unit/test_json.py

@@ -247,20 +247,18 @@ def cleanup_json_module_for_reload():
         pa.register_extension_type(db_dtypes.json.JSONArrowType())
     except pa.ArrowKeyError:
         pass  # Already registered is the state we want before the test runs
-    except ImportError:
-        pytest.skip("Could not import db_dtypes.json to set up test.")
 
     # Remove the module from sys.modules so importlib.reload re-executes it
-    if json_module_name in sys.modules:
+    if json_module_name in sys.modules: # COVERAGE FAIL: 252->255
         del sys.modules[json_module_name]
 
     yield  # Run the test that uses this fixture
 
     # Cleanup: Put the original module back if it existed
     # This helps isolate from other tests that might import db_dtypes.json
-    if original_module:
+    if original_module: # COVERAGE FAIL: 259-261
         sys.modules[json_module_name] = original_module
-    elif json_module_name in sys.modules:
+    elif json_module_name in sys.modules: # COVERAGE FAIL: 261->exit
         # If the test re-imported it but it wasn't there originally, remove it
         del sys.modules[json_module_name]
 
@@ -274,21 +272,21 @@ def test_json_arrow_type_reregistration_is_handled(cleanup_json_module_for_reloa
     is caught by the except block and does not raise an error.
     """
 
+    # Re-importing the module after the fixture removed it from sys.modules
+    # forces Python to execute the module's top-level code again.
+    # This includes the pa.register_extension_type call.
+    
+    assert "db_dtypes.json" not in sys.modules
     try:
-        # Re-importing the module after the fixture removed it from sys.modules
-        # forces Python to execute the module's top-level code again.
-        # This includes the pa.register_extension_type call.
         import db_dtypes.json  # noqa: F401
 
         assert (
             True
         ), "Module re-import completed without error, except block likely worked."
 
-    except pa.ArrowKeyError:
+    except pa.ArrowKeyError: # COVERAGE FAIL: 287-294
         # If this exception escapes, the except block in db_dtypes/json.py failed.
         pytest.fail(
             "pa.ArrowKeyError was raised during module reload, "
             "indicating the except block failed."
         )
-    except Exception as e:
-        pytest.fail(f"An unexpected exception occurred during module reload: {e}")