End to end tests for Parquet CLI

### Describe the enhancement requested

The CLI currently does not have end to end tests to check if argument passed to the command made it to the application logic. This can be solved in various ways, this issue tracks adding support for better tests in parquet CLI

### Component(s)

_No response_

The issue names no files or existing tests. Start by locating the Parquet CLI entry point and the application logic it invokes, then inspect how CLI arguments are passed; done means end-to-end tests verify those arguments reach the application logic.

Written by the indexing model from the issue text.