Remove playlist items with their group

test/playlists-duplicate.test.js

@@ -105,6 +105,34 @@ test('playlist group colours differ, survive reorder, and clear on ungrouped sli
   assert.equal(firstMember.style['--playlist-group-bg'], undefined);
 });
 
+test('removing a playlist group removes all of its member rows', () => {
+  const source = fs.readFileSync(path.join(__dirname, '..', 'src', 'web', 'public', 'js', 'playlists', 'playlist-schedule.js'), 'utf8');
+  const functionSource = source.match(/function removePlaylistGroup\(header\) \{[\s\S]*?\n    \}/)[0];
+  const removedRows = [];
+  let removedHeader = false;
+  let refreshedOrder = false;
+  const rows = [0, 1, 2].map((index) => ({ remove() { removedRows.push(index); } }));
+  const header = {
+    getAttribute(name) { return name === 'data-group-key' ? 'group-1' : null; },
+    remove() { removedHeader = true; }
+  };
+  const removeGroup = require('node:vm').runInNewContext('(' + functionSource + ')', {
+    getGroupRows(groupKey) {
+      assert.equal(groupKey, 'group-1');
+      return rows;
+    },
+    updateRowOrder(refresh) {
+      refreshedOrder = refresh;
+    }
+  });
+
+  removeGroup(header);
+
+  assert.deepEqual(removedRows, [0, 1, 2]);
+  assert.equal(removedHeader, true);
+  assert.equal(refreshedOrder, true);
+});
+
 test('empty playlist groups keep a drop area until a member is added', () => {
   const source = fs.readFileSync(path.join(__dirname, '..', 'src', 'web', 'public', 'js', 'playlists', 'playlist-schedule.js'), 'utf8');
   const functionSource = source.match(/function updatePlaylistGroupEmptyRows\(\) \{[\s\S]*?\n    \}/)[0];