Verify voice export quality guard and record final file checks

tools/audio/test_generate_voice.py

@@ -1,6 +1,5 @@
 import copy
 import importlib.util
-import json
 from pathlib import Path
 import tempfile
 import unittest
@@ -113,6 +112,17 @@ class VoiceHistoryTests(unittest.TestCase):
         self.assertEqual(changed, (target / 'count_01.wav').read_bytes())
         self.assertNotEqual(original, changed)
 
+    def test_long_count_is_blocked_before_export(self):
+        import sys
+        sys.path.insert(0, str(Path(__file__).parent))
+        from prepare_voice import prepare
+        def long_take(clip): return np.ones(72000, dtype=np.float32) * .1, 24000
+        manifest = voice.generate(self.catalog, self.profile, self.root, synthesize=long_take)
+        target = self.root / 'runtime'
+        with self.assertRaisesRegex(ValueError, 'exceeds 2 seconds'):
+            prepare(manifest, self.catalog, self.profile, self.root, target)
+        self.assertFalse(target.exists())
+
 
 if __name__ == '__main__':
     unittest.main()