test_helper.py 文件源码

def test_axes_keyword(self):
        freqs = [[0, 1, 2], [3, 4, -4], [-3, -2, -1]]
        shifted = [[-1, -3, -2], [2, 0, 1], [-4, 3, 4]]
        assert_array_almost_equal(fft.fftshift(freqs, axes=(0, 1)), shifted)
        assert_array_almost_equal(fft.fftshift(freqs, axes=0),
                fft.fftshift(freqs, axes=(0,)))
        assert_array_almost_equal(fft.ifftshift(shifted, axes=(0, 1)), freqs)
        assert_array_almost_equal(fft.ifftshift(shifted, axes=0),
                fft.ifftshift(shifted, axes=(0,)))