[tests] move unittest import to main

diff --git a/python/tests/test_slicing.py b/python/tests/test_slicing.py
index 1d8e42f..2ad84f4 100755 (executable)
--- a/python/tests/test_slicing.py
+++ b/python/tests/test_slicing.py
@@ -1,6 +1,5 @@
 #! /usr/bin/env python
 
-from unittest import main
 from numpy.testing import TestCase, assert_equal
 from aubio import slice_source_at_stamps
 from .utils import count_files_in_directory, get_default_test_sound
@@ -167,4 +166,5 @@ class aubio_slicing_wrong_ends_test_case(TestCase):
         shutil.rmtree(self.output_dir)
 
 if __name__ == '__main__':
+    from unittest import main
     main()

diff --git a/python/tests/test_specdesc.py b/python/tests/test_specdesc.py
index d7769dc..32a46fe 100755 (executable)
--- a/python/tests/test_specdesc.py
+++ b/python/tests/test_specdesc.py
@@ -1,6 +1,5 @@
 #! /usr/bin/env python
 
-from unittest import main
 from numpy.testing import TestCase, assert_equal, assert_almost_equal
 from numpy import random, arange, log, zeros
 from aubio import specdesc, cvec, float_type
@@ -229,4 +228,5 @@ class aubio_specdesc_wrong(TestCase):
             specdesc("unknown", 512)
 
 if __name__ == '__main__':
+    from unittest import main
     main()

diff --git a/python/tests/test_zero_crossing_rate.py b/python/tests/test_zero_crossing_rate.py
index 7f6d479..21f9e40 100755 (executable)
--- a/python/tests/test_zero_crossing_rate.py
+++ b/python/tests/test_zero_crossing_rate.py
@@ -1,6 +1,5 @@
 #! /usr/bin/env python
 
-from unittest import main
 from numpy.testing import TestCase
 from aubio import fvec, zero_crossing_rate
 
@@ -43,4 +42,5 @@ class zero_crossing_rate_test_case(TestCase):
         self.assertEqual(2./buf_size, zero_crossing_rate(self.vector))
 
 if __name__ == '__main__':
+    from unittest import main
     main()