[Chore] Added mock patches for pytest_plugin (CF-678)

[mohammedahmed18]

PR Type

Tests

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Description

• Session-scoped deterministic environment fixture

• Patch time, random, and uuid functions

• No-op time.sleep and fixed perf_counter

• Added imports: mock, uuid, Generator

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Changes walkthrough 📝

	Relevant files
Tests	pytest_plugin.py Add deterministic pytest fixture                                                  codeflash/verification/pytest_plugin.py Imported uuid and mock modules Enhanced TYPE_CHECKING imports with Generator Introduced session-scoped deterministic fixture Mocked time, random, uuid, sleep, perf_counter +27/-1

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

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Unused Import The imported TestCase class is not used and can be removed to clean up the import section. from unittest import TestCase, mock Monotonic Side Effects The side effect list for time.monotonic is limited to three values; additional calls will raise StopIteration. monotonic=mock.MagicMock(side_effect=[1.0, 2.0, 3.0]),

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	Use unbounded monotonic values Replace the finite side_effect list with an unbounded iterator to prevent StopIteration errors if time.monotonic is called more than three times. You can leverage the already-imported sys module to generate a large range. codeflash/verification/pytest_plugin.py [150] -monotonic=mock.MagicMock(side_effect=[1.0, 2.0, 3.0]), +monotonic=mock.MagicMock(side_effect=iter(range(1, sys.maxsize))), Suggestion importance[1-10]: 6 __ Why: Switching to an unbounded iterator for time.monotonic prevents StopIteration in long test runs and leverages the existing sys import, improving stability with minimal risk.	Low
General	Mock os.urandom output Add a patch for os.urandom to ensure any code using it also runs deterministically. This prevents non­-determinism from byte-level randomness. codeflash/verification/pytest_plugin.py [162] mock.patch("time.perf_counter", return_value=123.456), +mock.patch("os.urandom", return_value=b"\x00" * 16), Suggestion importance[1-10]: 5 __ Why: Adding a deterministic os.urandom patch ensures any code using byte-level randomness remains reproducible, a useful but noncritical enhancement.	Low