Test improvements

[bmos]

Increase coverage from 67% to 80+% and fix issues that were causing constant and intermittent test failures.

Updated Tests

• Use local cookie data instead of relying on external server for cookie testing
• Use local html instead of relying on external server for tests
• Quit browser after tests finish
• Re-use test fixture instance across tests for greatly reduced test runtime
• Less redundant code in session test fixture
• Optimize session fixture's driver instance for CI workflows (disabling unused features)
• Add pre-test validation of session fixture to avoid discarded window context errors that intermittently occur.

New Tests

• Add cookie test for transferring driver cookies to session
• Add tests for creating session object with various options (prefs, options, experimental options, extensions, etc)
• Add test for moving cookies with domain filter
• Add tests for all ensure_element* methods
• Add tests for ensure_click* function
• Add tests for ensure_add_cookie method

Module Code Changes

• Fix incorrect type hint for locator parameter to ensure_element() in requestium_mixin.py (I missed this in Standardize and document ensure_element method of Session #75)

[github-actions]

Coverage report

Click to see where and how coverage changed

File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
requestium
requestium_mixin.py
requestium_session.py
Project Total

This report was generated by python-coverage-comment-action

[bmos]

@lordjabez when you get a chance please take a look at this PR. It will resolve the ongoing testing issues.