def test_norm_vector_n2(self) -> None:
itq = ItqFunctor(normalize=2)
v = numpy.array([1, 0])
numpy.testing.assert_array_almost_equal(itq._norm_vector(v), [1, 0])
v = numpy.array([1, 1])
numpy.testing.assert_array_almost_equal(itq._norm_vector(v),
[1. / sqrt(2), 1. / sqrt(2)])
def test_norm_vector_no_normalization(self) -> None:
itq = ItqFunctor(normalize=None)
v = numpy.array([0, 1])
numpy.testing.assert_array_equal(itq._norm_vector(v), v)
v = numpy.array([[0, 1, 1, .4, .1]])
numpy.testing.assert_array_equal(itq._norm_vector(v), v)
v = numpy.array([0] * 128)
numpy.testing.assert_array_equal(itq._norm_vector(v), v)
