[AMD] Update test_gpt_oss_1gpu.py

[yctseng0211]

Motivation

Modifications

Accuracy Tests

Speed Tests and Profiling

Checklist

• Format your code according to the Format code with pre-commit.
• Add unit tests according to the Run and add unit tests.
• Update documentation according to Write documentations.
• Provide accuracy and speed benchmark results according to Test the accuracy and Benchmark the speed.
• Follow the SGLang code style guidance.

Review and Merge Process

1. Ping Merge Oncalls to start the process. See the PR Merge Process.
2. Get approvals from CODEOWNERS and other reviewers.
3. Trigger CI tests with comments or contact authorized users to do so.
   • Common commands include /tag-and-rerun-ci, /tag-run-ci-label, /rerun-failed-ci
4. After green CI and required approvals, ask Merge Oncalls or people with Write permission to merge the PR.

[gemini-code-assist]

Code Review

This pull request updates the estimated execution time for CUDA CI and modifies the test_mxfp4_20b test to conditionally set the SGLANG_USE_AITER environment variable when running on HIP-compatible hardware. Feedback suggests replacing the manual environment variable management with the more idiomatic unittest.mock.patch.dict to improve code readability and ensure proper cleanup.

[gemini-code-assist]

The manual management of environment variables using try...finally is verbose and can be simplified using unittest.mock.patch.dict. This approach is more idiomatic for Python tests and ensures the environment is correctly restored even if exceptions occur during setup or execution. It also prevents potential environment leakage to subsequent tests.

        from unittest.mock import patch
        env_updates = {"SGLANG_USE_AITER": "1"} if is_hip() else {}
        with patch.dict(os.environ, env_updates):
            self.run_test(
                model_variant="20b",
                quantization="mxfp4",
                expected_score_of_reasoning_effort={
                    "low": 0.34,
                    "medium": 0.34,
                    "high": 0.27,  # TODO investigate
                },
            )