fix scanner tests

groove/db/scanner.py

@@ -49,14 +49,17 @@ class MediaScanner:
         asyncio.run(_do_import())
         self.db.commit()
 
-    async def _import_one_track(self, path):
+    def _get_tags(self, path):  # pragma: no cover
         tags = music_tag.load_file(path)
-        relpath = str(path.relative_to(self.root))
-        stmt = groove.db.track.insert({
-            'relpath': relpath,
+        return {
             'artist': str(tags.resolve('album_artist')),
             'title': str(tags['title']),
-        }).prefix_with('OR IGNORE')
+        }
+
+    async def _import_one_track(self, path):
+        tags = self._get_tags(path)
+        tags['relpath'] = str(path.relative_to(self.root))
+        stmt = groove.db.track.insert(tags).prefix_with('OR IGNORE')
         logging.debug(f"{tags['artist']} - {tags['title']}")
         self.db.execute(stmt)
 

test/test_scanner.py

@@ -35,6 +35,16 @@ def test_scanner(monkeypatch, in_memory_db, media):
 
     # replace the filesystem glob with the test fixture generator
     monkeypatch.setattr(scanner.MediaScanner, 'find_sources', MagicMock(return_value=media()))
+
+    def mock_loader(path):
+        return {
+            'artist': 'foo',
+            'title': 'bar',
+        }
+
+    # replace music_tag so it doesn't try to read things
+    monkeypatch.setattr(scanner.MediaScanner, '_get_tags', MagicMock(side_effect=mock_loader))
+
     test_scanner = scanner.media_scanner(root=Path('/test'), db=in_memory_db)
     expected = len(fixture_tracks)