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70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
"""Regression test: num_frames=0 must not cause ZeroDivisionError.
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The LLM-supplied num_frames parameter was used directly as a divisor in
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`frame_count // num_frames`; num_frames=0 crashed with ZeroDivisionError
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(surfacing as a confusing tool error). It is now clamped to >= 1 up front.
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"""
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import asyncio
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import json
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import os
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import sys
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import types
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from types import SimpleNamespace
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), "src"))
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# Optional runtime deps for importing the chapter module in unit tests.
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sys.modules.setdefault("dotenv", types.SimpleNamespace(load_dotenv=lambda: None))
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mcp = types.ModuleType("mcp")
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mcp_types = types.ModuleType("mcp.types")
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class TextContent:
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def __init__(self, **kwargs):
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self.__dict__.update(kwargs)
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mcp_types.TextContent = TextContent
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sys.modules["mcp"] = mcp
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sys.modules["mcp.types"] = mcp_types
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import cv2
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import numpy as np
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import media_processing_tools
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from media_processing_tools import extract_video_keyframes
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def _make_clip(path, frames=20):
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fourcc = cv2.VideoWriter_fourcc(*"mp4v")
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out = cv2.VideoWriter(str(path), fourcc, 10.0, (64, 48))
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for _ in range(frames):
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out.write(np.zeros((48, 64, 3), dtype=np.uint8))
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out.release()
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def test_extract_keyframes_zero_num_frames_is_clamped(tmp_path):
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clip = tmp_path / "clip.mp4"
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_make_clip(clip)
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result = asyncio.run(extract_video_keyframes(str(clip), num_frames=0))
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payload = json.loads(result.text)
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assert payload["success"] is True
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assert "division" not in str(payload["message"]).lower()
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def test_analyze_video_ai_zero_num_frames_is_clamped(tmp_path, monkeypatch):
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clip = tmp_path / "clip.mp4"
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_make_clip(clip)
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message = SimpleNamespace(content="a frame")
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response = SimpleNamespace(choices=[SimpleNamespace(message=message)])
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client = SimpleNamespace(chat=SimpleNamespace(
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completions=SimpleNamespace(create=lambda **kwargs: response)))
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monkeypatch.setattr(media_processing_tools, "_make_vision_client",
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lambda: (client, "fake-model"))
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result = asyncio.run(media_processing_tools.analyze_video_ai(str(clip), num_frames=0))
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payload = json.loads(result.text)
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assert payload["success"] is True
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assert "division" not in str(payload["message"]).lower()
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