from numpy.testing import assert_raises import numpy as np from .. import all from .._creation_functions import asarray from .._dtypes import float64, int8 from .._manipulation_functions import ( concat, reshape, stack ) def test_concat_errors(): assert_raises(TypeError, lambda: concat((1, 1), axis=None)) assert_raises(TypeError, lambda: concat([asarray([1], dtype=int8), asarray([1], dtype=float64)])) def test_stack_errors(): assert_raises(TypeError, lambda: stack([asarray([1, 1], dtype=int8), asarray([2, 2], dtype=float64)])) def test_reshape_copy(): a = asarray(np.ones((2, 3))) b = reshape(a, (3, 2), copy=True) assert not np.shares_memory(a._array, b._array) a = asarray(np.ones((2, 3))) b = reshape(a, (3, 2), copy=False) assert np.shares_memory(a._array, b._array) a = asarray(np.ones((2, 3)).T) b = reshape(a, (3, 2), copy=True) assert_raises(AttributeError, lambda: reshape(a, (2, 3), copy=False))