📝 CodeRabbit Chat: Implement requested code changes

[coderabbitai]

Code changes was requested by @leynos.

• Consolidate metrics/clock ports and tighten checkpoint metrics tests (#115) #116 (comment)

The following files were modified:

• tests/canonical_storage/test_workflow_checkpoints.py

Summary by Sourcery

Tests:

• Fix the workflow checkpoint test name typo and remove unused setup code in the canonical storage tests.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Renames a test case for clarity and removes an unused variable in the workflow checkpoints tests to match requested review feedback.

File-Level Changes

Change	Details	Files
Improve clarity and cleanliness of a workflow checkpoints test case.	Rename the async test function so its name correctly describes the missing checkpoint scenario Remove the unused factory variable assignment from the test to simplify the setup	tests/canonical_storage/test_workflow_checkpoints.py

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[sourcery-ai]

Hey - I've found 1 issue, and left some high level feedback:

• The factory variable is still used in async with SqlAlchemyUnitOfWork(factory) as uow: but its assignment was removed, which will cause a NameError; either restore the casted assignment or update the context manager to use session_factory directly with appropriate typing.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- The `factory` variable is still used in `async with SqlAlchemyUnitOfWork(factory) as uow:` but its assignment was removed, which will cause a `NameError`; either restore the casted assignment or update the context manager to use `session_factory` directly with appropriate typing.

## Individual Comments

### Comment 1
<location path="tests/canonical_storage/test_workflow_checkpoints.py" line_range="62-68" />
<code_context>

 @pytest.mark.asyncio
-async def test_checkpoint_store_get_returns_none_for_missingmake_checkpoint(
+async def test_checkpoint_store_get_returns_none_for_missing_checkpoint(
     session_factory: object,
 ) -> None:
     """`get` should return None when the checkpoint does not exist."""
-    factory = typ.cast("async_sessionmaker[AsyncSession]", session_factory)
+

     async with SqlAlchemyUnitOfWork(factory) as uow:
         result = await uow.workflow_checkpoints.get(str(uuid.uuid4()))
</code_context>
<issue_to_address>
**issue (testing):** This test no longer defines `factory`, so it will fail before exercising the behaviour it’s meant to validate.

With `factory = typ.cast(...)` removed but `factory` still used in the `SqlAlchemyUnitOfWork` context manager, this test will raise a `NameError` and never exercise the `get` call or its assertion. Please reintroduce the `factory` initialization (or pass `session_factory` directly) so the test actually checks that `get` returns `None` for a missing checkpoint.
</issue_to_address>

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[sourcery-ai]

issue (testing): This test no longer defines factory, so it will fail before exercising the behaviour it’s meant to validate.

With factory = typ.cast(...) removed but factory still used in the SqlAlchemyUnitOfWork context manager, this test will raise a NameError and never exercise the get call or its assertion. Please reintroduce the factory initialization (or pass session_factory directly) so the test actually checks that get returns None for a missing checkpoint.