Zakaria
55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
"""Regression test: temp file cleanup when materializing data URLs for vision.
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`_materialize_data_url_for_vision` creates a `NamedTemporaryFile(delete=False)`
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so the path can be handed to vision backends. If `base64.b64decode` raises on
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a corrupt/unsupported data URL the temp file would otherwise persist forever
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on disk, leaking once per failed call.
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"""
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from __future__ import annotations
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import base64
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import os
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import tempfile
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from pathlib import Path
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import pytest
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from run_agent import AIAgent
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def _list_anthropic_tmpfiles(tmpdir: str) -> list[str]:
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return [
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name for name in os.listdir(tmpdir)
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if name.startswith("anthropic_image_")
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]
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def test_b64decode_failure_does_not_leak_tempfile(monkeypatch, tmp_path):
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monkeypatch.setattr(tempfile, "tempdir", str(tmp_path))
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bad_url = "data:image/png;base64,!!!not-valid-base64!!!"
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with pytest.raises(Exception):
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AIAgent._materialize_data_url_for_vision(bad_url)
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leftovers = _list_anthropic_tmpfiles(str(tmp_path))
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assert leftovers == [], f"leaked temp files after decode failure: {leftovers}"
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def test_successful_decode_returns_path_to_existing_file(monkeypatch, tmp_path):
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monkeypatch.setattr(tempfile, "tempdir", str(tmp_path))
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payload = b"\x89PNG\r\n\x1a\n" + b"\x00" * 16 # a few bytes is enough
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encoded = base64.b64encode(payload).decode("ascii")
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good_url = f"data:image/png;base64,{encoded}"
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path_str, path_obj = AIAgent._materialize_data_url_for_vision(good_url)
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assert isinstance(path_obj, Path)
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assert path_obj.exists()
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assert path_obj.read_bytes() == payload
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assert path_str == str(path_obj)
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# Caller is responsible for cleanup; mimic that here so the test leaves
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# no artifacts behind.
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path_obj.unlink()
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