Refined the tests in the numpy interface test code
Refined the tests in the numpy interface test code

frederikhermans/pyfftw-arm,hgomersall/pyFFTW,drwells/pyFFTW,simudream/pyFFTW,drwells/pyFFTW,jonathanessen/pyFFTW,hgomersall/pyFFTW,simudream/pyFFTW,frederikhermans/pyfftw-arm,drwells/pyFFTW,drwells/pyFFTW,jonathanessen/pyFFTW,simudream/pyFFTW,hgomersall/pyFFTW,jonathanessen/pyFFTW,simudream/pyFFTW