Squash Odysseus development history

tests/test_inspect_media_truncated_tail.py

@@ -0,0 +1,47 @@
+"""Regression coverage for partially downloaded/truncated video containers."""
+
+import asyncio
+import json
+from pathlib import Path
+import shutil
+import subprocess
+
+import pytest
+
+from src.agent_tools.media_tools import InspectMediaTool
+from src.tool_execution import _active_workspace
+
+
+@pytest.mark.skipif(
+    not shutil.which("ffmpeg") or not shutil.which("ffprobe"),
+    reason="ffmpeg required",
+)
+def test_inspect_media_recovers_to_a_decodable_frame_before_a_truncated_tail(
+    tmp_path: Path,
+):
+    complete = tmp_path / "complete.webm"
+    truncated = tmp_path / "truncated.webm"
+    subprocess.run(
+        [
+            "ffmpeg", "-hide_banner", "-loglevel", "error", "-f", "lavfi",
+            "-i", "testsrc2=size=320x180:rate=4:duration=8",
+            "-c:v", "libvpx-vp9", "-g", "4", "-pix_fmt", "yuv420p",
+            "-y", str(complete),
+        ],
+        check=True,
+    )
+    payload = complete.read_bytes()
+    truncated.write_bytes(payload[: int(len(payload) * 0.70)])
+
+    token = _active_workspace.set(str(tmp_path))
+    try:
+        result = asyncio.run(InspectMediaTool().execute(json.dumps({
+            "path": "/workspace/truncated.webm",
+            "timestamp": 7.9,
+        }), {}))
+    finally:
+        _active_workspace.reset(token)
+
+    assert result["exit_code"] == 0, result
+    assert result["frame_timestamps"][0] < 7.0
+    assert "Recovered a decodable frame before the requested timestamp" in result["output"]