ref: fe6a4cdd75ce2ceb611dd40a8deba0499857c7ff
parent: c2d076b32da998d13b1e0298e35c5de461819c2f
author: Paul Brossier <piem@piem.org>
date: Fri Sep 16 23:03:43 EDT 2016
python/tests/test_pitchshift.py: add minimal tests
--- /dev/null
+++ b/python/tests/test_pitchshift.py
@@ -1,0 +1,43 @@
+#! /usr/bin/env python
+
+from nose2 import TestCase
+import aubio
+
+class aubio_pitchshift(TestCase):
+
+ def setUp(self):
+ self.o = aubio.pitchshift()
+
+ def test_default_creation(self):
+ self.assertEqual(self.o.get_pitchscale(), 1)
+ self.assertEqual(self.o.get_transpose(), 0)
+
+ def test_on_zeros(self):
+ test_length = 20000
+ read = 0
+ # test on zeros
+ vec = aubio.fvec(512)
+ transpose_range = 24
+ while read < test_length:
+ # transpose the samples
+ out = self.o(vec)
+ self.assertTrue((out == 0).all())
+ # position in the file (between 0. and 1.)
+ percent_read = read / float(test_length)
+ # variable transpose rate (in semitones)
+ transpose = 2 * transpose_range * percent_read - transpose_range
+ # set transpose rate
+ self.o.set_transpose(transpose)
+ read += len(vec)
+
+ def test_transpose_too_high(self):
+ with self.assertRaises(ValueError):
+ self.o.set_transpose(24.3)
+
+ def test_transpose_too_low(self):
+ with self.assertRaises(ValueError):
+ self.o.set_transpose(-24.3)
+
+if __name__ == '__main__':
+ from nose2 import main
+ main()
--
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