Improve test coverage for `op` module based on review feedback#29

Merged

jason810496 merged 6 commits intofeature/add-transaction-classfrom

copilot/sub-pr-21-b4a179f5-b19d-4f10-ab5e-c02ac7af825a

Jan 3, 2026

Commits on Jan 3, 2026

Initial plan
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Add tests for _execute_operation with provided session and read_with_poll without vt

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Add test for async _execute_operation path when session is None

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Remove fragile line number references from test comments

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Clarify comment in test_read_with_poll_without_vt

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Address final code review feedback: improve test structure and add cleanup verification

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