chunker and ui

tests/chunker/conftest.py

@@ -0,0 +1,76 @@
+"""
+Shared fixtures for chunker tests.
+
+Demonstrates: TDD and unit testing best practices (Interview Topic 8) — fixtures, temp files.
+"""
+
+import os
+import tempfile
+
+import pytest
+
+from core.chunker.models import Chunk, ChunkResult
+
+
+@pytest.fixture
+def temp_file():
+    """Create a temporary file with known content, cleaned up after test."""
+    files = []
+
+    def _create(content: bytes = b"x" * 4096):
+        f = tempfile.NamedTemporaryFile(delete=False, suffix=".mp4")
+        f.write(content)
+        f.close()
+        files.append(f.name)
+        return f.name
+
+    yield _create
+
+    for path in files:
+        if os.path.exists(path):
+            os.unlink(path)
+
+
+@pytest.fixture
+def sample_chunk(temp_file):
+    """Create a sample time-based Chunk with valid time range."""
+    path = temp_file(b"x" * 1024)
+    return Chunk(
+        sequence=0,
+        start_time=0.0,
+        end_time=10.0,
+        source_path=path,
+        duration=10.0,
+    )
+
+
+@pytest.fixture
+def make_chunk(temp_file):
+    """Factory fixture for creating time-based chunks with specific sequence numbers."""
+    path = temp_file(b"x" * 1024)
+
+    def _make(sequence: int, duration: float = 10.0) -> Chunk:
+        start = sequence * duration
+        return Chunk(
+            sequence=sequence,
+            start_time=start,
+            end_time=start + duration,
+            source_path=path,
+            duration=duration,
+        )
+
+    return _make
+
+
+@pytest.fixture
+def make_result():
+    """Factory fixture for creating ChunkResults."""
+
+    def _make(sequence: int, success: bool = True, processing_time: float = 0.01) -> ChunkResult:
+        return ChunkResult(
+            sequence=sequence,
+            success=success,
+            processing_time=processing_time,
+        )
+
+    return _make