Fixing bugs and failing tests for architecture i686, solving issue #8

Note that the modifications include the fixes for issue #10 and issue #11
and should solve Debian bug 861091 and 861094.

ltfatpy/tests/gabor/test_gabphasegrad.py

@@ -143,7 +143,7 @@ class TestGabphasegrad(unittest.TestCase):
                 msg = 'wrong output in gabphasegrad with inputs ' + str(inputs)
                 assert_allclose(tgrad, outputs[0], rtol=4e-15, err_msg=msg)
                 assert_allclose(fgrad, outputs[1], rtol=1e-15, err_msg=msg)
-                assert_array_equal(c, outputs[2], msg)
+                assert_allclose(c, outputs[2], rtol=1e-15, err_msg=msg)
             elif method == 'phase':
                 cphase, a = (inputs[var] for var in ('cphase', 'a'))
                 tgrad, fgrad = gabphasegrad(method, cphase, a)

ltfatpy/tests/gabor/test_instfreqplot.py

@@ -108,7 +108,7 @@ class TestInstfreqplot(unittest.TestCase):
             out = instfreqplot(**inputs)
             msg = ('Wrong value in output of instfreqplot with inputs ' +
                    str(inputs))
-            assert_allclose(out, outputs[0], rtol=2e-15, err_msg=msg)
+            assert_allclose(out, outputs[0], atol=1e-13, err_msg=msg)
 
 
 if __name__ == '__main__':

ltfatpy/tests/gabor/test_phaseplot.py

@@ -102,7 +102,7 @@ class TestPhaseplot(unittest.TestCase):
             out = phaseplot(**inputs)
             msg = ('Wrong value in output of phaseplot with inputs ' +
                    str(inputs))
-            assert_allclose(out, outputs[0], rtol=2e-15, err_msg=msg)
+            assert_allclose(out, outputs[0], atol=1e-14, err_msg=msg)
 
 
 if __name__ == '__main__':

ltfatpy/tests/gabor/test_sgram.py

@@ -114,7 +114,7 @@ class TestSgram(unittest.TestCase):
             out = sgram(**inputs)
             msg = ('Wrong value in output of sgram with inputs ' +
                    str(inputs))
-            assert_array_equal(out, outputs[0], msg)
+            assert_allclose(out, outputs[0], atol=1e-14, err_msg=msg)
 
 
 if __name__ == '__main__':

ltfatpy/tests/gabor/test_tfplot.py

@@ -63,6 +63,7 @@ from __future__ import print_function, division
 import unittest
 import numpy as np
 from numpy.testing import assert_array_equal
+import matplotlib.pyplot as plt
 
 from ltfatpy.gabor.tfplot import tfplot
 
@@ -175,6 +176,11 @@ class TestTfplot(unittest.TestCase):
     def test_plot(self):
         """Check that the all the plotting sections of tfplot can be run
         """
+        # NOTE: To avoid an error when running the tests in a environnement
+        # with no $DISPLAY variable defined, we switch matplotlib to a
+        # non-interactive backend
+        plt.switch_backend("ps")
+
         coef = np.random.random((5, 4))
         step = 1
         yr = np.array([0., 1.])

ltfatpy/tools/postpad.py

@@ -103,7 +103,7 @@ def postpad(x, L, C=0., dim=None):
 
     if dim is None:
         # by default, dim is the first non-singleton dimension
-        dim = np.nonzero(np.array(x.shape) > 1)[0][0]
+        dim = int(np.nonzero(np.array(x.shape) > 1)[0][0])
 
     x, L, Ls, W, dim, permutedsize, order = assert_sigreshape_pre(x, L, dim)