Add comprehensive test suites for DuckDB backend, FlightSQL protobuf,… #6
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… and MPZSQL server - Implemented tests for DuckDB backend operations based on real server interactions, covering metadata queries, schema introspection, and query execution scenarios. - Developed tests for FlightSQL protobuf handling, including schema generation, command parsing, and logging integration. - Created tests for MPZSQL server lifecycle operations, configuration validation, and error handling during initialization. - Enhanced test coverage for threading and concurrency aspects of the server.
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Pull Request Overview
This PR adds comprehensive test suites for the MPZSQL server's core components based on real server interactions and logs. The tests enhance coverage across DuckDB backend operations, FlightSQL protobuf handling, and server lifecycle management.
Key changes:
- Implemented DuckDB backend tests covering metadata queries, schema introspection, and query execution scenarios
- Developed FlightSQL protobuf tests for schema generation, command parsing, and logging integration
- Created comprehensive server lifecycle tests for configuration validation, initialization, and error handling
- Added extensive CLI module tests with 100% coverage including validation functions, connection handling, and edge cases
Reviewed Changes
Copilot reviewed 4 out of 6 changed files in this pull request and generated 5 comments.
| File | Description |
|---|---|
| tests/test_duckdb_backend.py | Tests DuckDB backend operations based on real server interactions including metadata queries and error scenarios |
| tests/test_flightsql_protobuf.py | Tests FlightSQL protobuf handling including schema generation, command parsing, and logging integration |
| tests/test_server.py | Tests MPZSQL server lifecycle operations, configuration validation, signal handling, and threading aspects |
| tests/test_cli.py | Comprehensive CLI module tests covering validation functions, connection handling, and all configuration paths |
Comments suppressed due to low confidence (1)
tests/test_cli.py:78
- The test patches pathlib.Path.read_text but doesn't verify that the correct file path was passed to the function. Consider asserting the path argument to ensure the function is called with the expected file path.
result = cli.load_init_sql(None, "test.sql")
| schema = self.protobuf.get_sql_info_schema() | ||
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| # Create empty table with this schema to verify it works | ||
| empty_arrays = [pa.array([], type=pa.int32()), pa.array([], type=pa.string())] |
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The test creates empty arrays with int32 type for info_name, but the actual schema expects uint32 type (line 30). This type mismatch will cause the table creation to fail.
| empty_arrays = [pa.array([], type=pa.int32()), pa.array([], type=pa.string())] | |
| empty_arrays = [pa.array([], type=pa.uint32()), pa.array([], type=pa.string())] |
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| import tempfile | ||
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| with tempfile.TemporaryDirectory() as temp_dir: | ||
| db_path = os.path.join(temp_dir, 'test.duckdb') |
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[nitpick] Use pathlib.Path instead of os.path.join for better cross-platform compatibility and consistency with modern Python practices.
| db_path = os.path.join(temp_dir, 'test.duckdb') | |
| db_path = Path(temp_dir) / 'test.duckdb' |
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| except Exception: | ||
| pass # Expected since we're mocking everything |
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The bare except clause on line 71 catches all exceptions without specific handling. This makes debugging difficult and hides potential issues. Consider catching specific expected exceptions or at least logging the exception details.
| except Exception: | |
| pass # Expected since we're mocking everything | |
| except Exception as e: | |
| logging.error(f"An exception occurred during server start: {e}") |
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| # In true read-only mode, we should still have only 1 row | ||
| assert result[0][0] <= 1, "Read-only mode should prevent writes" |
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The assertion uses '<= 1' which is ambiguous. If read-only mode is truly enforced, the count should remain exactly 1. Consider using '== 1' for a more precise assertion or add a comment explaining why '<= 1' is used.
| # In true read-only mode, we should still have only 1 row | |
| assert result[0][0] <= 1, "Read-only mode should prevent writes" | |
| # In true read-only mode, we should still have exactly 1 row | |
| assert result[0][0] == 1, "Read-only mode should prevent writes" |
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| if __name__ == "__main__": | ||
| # Run tests with coverage | ||
| pytest.main(["-v", "--cov=mpzsql.cli", "--cov-report=term-missing", __file__]) No newline at end of file |
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Running pytest.main() in the test file itself is not a recommended practice as it can interfere with normal test execution. Consider removing this or using it only for standalone debugging.
| if __name__ == "__main__": | |
| # Run tests with coverage | |
| pytest.main(["-v", "--cov=mpzsql.cli", "--cov-report=term-missing", __file__]) | |
| # Removed the standalone pytest.main() call to adhere to best practices. |
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Add comprehensive test suites for DuckDB backend, FlightSQL protobuf,…
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… and MPZSQL server