fix unit tests
fix unit tests

PyWavelets/pywt,michelp/pywt,eriol/pywt,rgommers/pywt,PyWavelets/pywt,grlee77/pywt,eriol/pywt,rgommers/pywt,eriol/pywt,grlee77/pywt,michelp/pywt,rgommers/pywt,michelp/pywt,rgommers/pywt