Add synthetic sample library

tests/test_sample_library.py

@@ -0,0 +1,28 @@
+import runpy
+from pathlib import Path
+
+from serato_doctor.crate_parser import parse_crates
+from serato_doctor.models.library import Library
+from serato_doctor.scanner import scan_audio
+
+
+def test_generated_sample_library_has_expected_scenario(tmp_path):
+    generator_path = (
+        Path(__file__).parents[1] / "samples" / "small-library" / "generate.py"
+    )
+    build_sample = runpy.run_path(str(generator_path))["build_sample"]
+    sample_root = build_sample(tmp_path / "sample")
+
+    references = parse_crates(sample_root / "Serato" / "_Serato_" / "Subcrates")
+    tracks = scan_audio(sample_root / "Music")
+    results = Library.build(references, tracks).reconcile_by_filename()
+    missing = {
+        result.reference.filename
+        for result in results
+        if not result.exists_by_filename
+    }
+
+    assert len(list((sample_root / "Serato").rglob("*.crate"))) == 7
+    assert len(references) == 13
+    assert len(tracks) == 10
+    assert missing == {"Missing.mp3", "Old Name.mp3"}