Clean all temporary test files in all circumstances

[aseembits93]

User description

Codeflash CLI currently generates some test files for establishing code behavior and performance. In certain cases, these files remain in the filesystem which shows up in git status. We should be deleting all such files no matter how the code exited.

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PR Type

Documentation

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Description

• Insert explanatory comment for trace cleanup

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Changes walkthrough 📝

	Relevant files
Documentation	optimizer.py Document trace file cleanup                                                            codeflash/optimization/optimizer.py Added comment explaining trace file unlink behavior +1/-0

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[github-actions]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Race Condition The code checks for the trace file with exists() before calling unlink(), which can lead to a TOCTOU race condition. Consider using Path.unlink(missing_ok=True) or catching FileNotFoundError directly. trace_file = Path(self.args.benchmarks_root) / "benchmarks.trace" if trace_file.exists(): #Trace file not deleted all the times trace_file.unlink() Error Handling If an exception is thrown before unlink(), the trace file might not be deleted. It may be better to place cleanup in a finally block to guarantee deletion in all exit scenarios. try: instrument_codeflash_trace_decorator(file_to_funcs_to_optimize) trace_file = Path(self.args.benchmarks_root) / "benchmarks.trace" if trace_file.exists(): #Trace file not deleted all the times trace_file.unlink() Comment Style The newly added comment #Trace file not deleted all the times lacks a leading space and could be clarified. Follow the project's comment style and improve the grammar for clarity. #Trace file not deleted all the times

[github-actions]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
General	Use TemporaryDirectory for auto cleanup Switch to tempfile.TemporaryDirectory to ensure the temporary directory is automatically cleaned up even if exceptions occur. Assign the manager to an instance attribute so it remains alive for the needed scope. codeflash/optimization/optimizer.py [118-119] -self.replay_tests_dir = Path( - tempfile.mkdtemp(prefix="codeflash_replay_tests_", dir=self.args.benchmarks_root) -) +self._temp_dir_manager = tempfile.TemporaryDirectory(prefix="codeflash_replay_tests_", dir=self.args.benchmarks_root) +self.replay_tests_dir = Path(self._temp_dir_manager.name) Suggestion importance[1-10]: 7 __ Why: Switching to TemporaryDirectory ensures the temp dir is cleaned up automatically, preventing resource leaks while maintaining the same behavior.	Medium
Possible issue	Make trace_file deletion robust Replace the manual existence check and unlink with a single unlink(missing_ok=True) call wrapped in a try/except to avoid race conditions and suppress any OSError if deletion fails. codeflash/optimization/optimizer.py [114-116] -if trace_file.exists(): - trace_file.unlink() +try: + trace_file.unlink(missing_ok=True) +except OSError: + pass Suggestion importance[1-10]: 6 __ Why: Using unlink(missing_ok=True) and catching OSError removes the race condition and safely ignores deletion failures, improving robustness without major functional changes.	Low

[openhands-ai]

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@OpenHands please fix the failing actions on PR #246

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