Playback Mode Pages

tests/test_performance.py

@@ -19,9 +19,19 @@ def fixture(root):
   music['staves'][0]['measures'].append(copy.deepcopy(first))
   music['staves'][0]['measures'].extend({**copy.deepcopy(first), 'ending_sustain': True} for _ in range(3))
   music['metadata']['song_id'] = 'fixture'
-  pages = [dict(path=f'{i + 1}.png', sha256='0' * 64, first_measure=i + 1, measure_count=1 if i == 0 else 4,
-    start_beat=generator.model.rational(i * 4), end_beat=generator.model.rational(4 if i == 0 else 20)) for i in range(2)]
-  bundle = dict(music=music, presentation=dict(width=976, height=484, pages=pages), performance=generator.performance.timing(music))
+
+  def system(first, count, y):
+    return dict(first_measure=first, measure_count=count, start_beat=generator.model.rational((first - 1) * 4),
+      end_beat=generator.model.rational((first + count - 1) * 4),
+      labels=[dict(measure=m, bounds=[30 + 40 * (m - first), y, 42 + 40 * (m - first), y + 12]) for m in range(first, first + count)])
+
+  def page(index, systems):
+    return dict(path=f'{index}.png', sha256='0' * 64, first_measure=systems[0]['first_measure'],
+      measure_count=sum(s['measure_count'] for s in systems), start_beat=systems[0]['start_beat'], end_beat=systems[-1]['end_beat'], systems=systems)
+
+  pages = [page(1, [system(1, 1, 70), system(2, 1, 290)]), page(2, [system(3, 3, 70)])]
+  playback = [pages[0], page(3, [system(2, 1, 70), system(3, 3, 290)]), pages[1]]
+  bundle = dict(music=music, presentation=dict(width=976, height=484, pages=pages, playback_pages=playback), performance=generator.performance.timing(music))
   (root / 'score.json').write_text(json.dumps(bundle))
   entries = []
   # Constant PCM makes accents, recorded count-in and the silent click tail observable.
@@ -79,6 +89,28 @@ class PerformanceTests(unittest.TestCase):
       bundle['presentation']['pages'][1]['start_beat'] = generator.model.rational(3)
       with self.assertRaisesRegex(ValueError, 'timing'):
         generator.performance.validate_pages(bundle['music'], bundle['presentation']['pages'])
+  def test_playback_metadata_rejects_missing_views_wrong_pairs_and_bad_labels(self):
+    with tempfile.TemporaryDirectory() as temporary:
+      root = pathlib.Path(temporary)
+      fixture(root)
+      bundle = json.loads((root / 'score.json').read_text())
+      pages = bundle['presentation']['pages']
+      playback = bundle['presentation']['playback_pages']
+      generator.performance.validate_views(bundle['music'], pages, playback)
+      for fault in ('missing', 'pair', 'bounds', 'label', 'timing'):
+        altered = copy.deepcopy(playback)
+        if fault == 'missing':
+          altered.pop()
+        elif fault == 'pair':
+          altered[1] = copy.deepcopy(altered[0])
+        elif fault == 'bounds':
+          altered[0]['systems'][0]['labels'][0]['bounds'][0] = -1
+        elif fault == 'label':
+          altered[0]['systems'][0]['labels'][0]['measure'] = 2
+        else:
+          altered[1]['start_beat'] = generator.model.rational(3)
+        with self.subTest(fault=fault), self.assertRaises(ValueError):
+          generator.performance.validate_views(bundle['music'], pages, altered)
 
 if __name__ == '__main__':
   parser = argparse.ArgumentParser()