python/tests/test_pitchshift.py: make sure a wrong transpose raises RuntimeError

diff --git a/python/tests/test_pitchshift.py b/python/tests/test_pitchshift.py
index 2db9d4d..8b5af4e 100755 (executable)
--- a/python/tests/test_pitchshift.py
+++ b/python/tests/test_pitchshift.py
@@ -60,6 +60,11 @@ class aubio_pitchshift(TestCase):
         with self.assertRaises(ValueError):
             self.o.set_transpose(-24.3)
 
+class aubio_pitchshift_wrong_params(TestCase):
+
+    def test_wrong_transpose(self):
+        with self.assertRaises(RuntimeError):
+            aubio.pitchshift("default", -123)
 
 class aubio_pitchshift_testruns(TestCase):