def test_vectors_as_mixed_matrices_and_ndarrays(self):
x = array([[1., 2., 3.]])
y = asmatrix(array([[4., 5., 6.]]))
expected_x = y.tolist()
expected_y = x.tolist()
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_strides_less_than_length(self):
x = array([[1., 2., 3.]])
y = array([[4., 5., 6.]])
expected_x = [[4., 2., 6.]]
expected_y = [[1., 5., 3.]]
self.assertListEqual(swap(x, y, inc_x=2, inc_y=2).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_row_and_col_vectors_as_ndarrays(self):
x = array([[1., 2., 3.]])
y = array([[4.], [5.], [6.]])
expected_x = [[4., 5., 6.]]
expected_y = [[1.], [2.], [3.]]
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_negative_element(self):
x = array([[1., -2., 3.]])
y = array([[4., 5., 6.]])
expected_x = y.tolist()
expected_y = x.tolist()
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_two_column_vectors_as_ndarrays(self):
x = array([[1.], [2.], [3.]])
y = array([[4.], [5.], [6.]])
expected_x = y.tolist()
expected_y = x.tolist()
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_two_row_vectors_as_ndarrays(self):
x = array([[1., 2., 3.]])
y = array([[4., 5., 6.]])
expected_x = y.tolist()
expected_y = x.tolist()
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_scalar_as_ndarray(self):
x = array([[1.]])
y = array([[2.]])
expected_x = y.tolist()
expected_y = x.tolist()
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def test_unequal_strides(self):
x = array([[1., 2., 3., 4., 5., 6.]])
y = array([[4., 5., 6.]])
expected_x = [[4., 2., 5., 4., 6., 6.]]
expected_y = [[1., 3., 5.]]
self.assertListEqual(swap(x, y, inc_x=2, inc_y=1).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)
def passed_test(dtype, as_matrix, x_is_row, y_is_row, stride):
"""
Run one vector swap test.
Arguments:
dtype: either 'float64' or 'float32', the NumPy dtype to test
as_matrix: True to test a NumPy matrix, False to test a NumPy ndarray
x_is_row: True to test a row vector as parameter x, False to test a column vector
y_is_row: True to test a row vector as parameter y, False to test a column vector
stride: stride of x and y to test; if None, a random stride is assigned
Returns:
True if the expected result is within the margin of error of the actual result,
False otherwise.
"""
# generate random sizes for vector dimensions and vector stride (if necessary)
length = randint(N_MIN, N_MAX)
stride = randint(N_MIN, STRIDE_MAX) if stride is None else stride
# create random vectors to test
x = random_vector(length, x_is_row, dtype, as_matrix)
y = random_vector(length, y_is_row, dtype, as_matrix)
# compute the expected result
if stride == 1:
x_2 = copy(y.T) if y_is_row else copy(y)
y_2 = copy(x.T) if x_is_row else copy(x)
else:
x_2 = copy(x.T) if x_is_row else copy(x)
y_2 = copy(y.T) if y_is_row else copy(y)
for i in range(0, length, stride):
temp = x_2[i, 0]
x_2[i, 0] = y_2[i, 0]
y_2[i, 0] = temp
# get the actual result
swap(x, y, stride, stride)
# compare the actual result to the expected result and return result of the test
passed_x = allclose(x.T, x_2) if x_is_row else allclose(x, x_2)
passed_y = allclose(y.T, y_2) if y_is_row else allclose(y, y_2)
return passed_x and passed_y
def test_float64_dtype(self):
x = array([[1., 2., 3.]], dtype='float64')
y = array([[3., 2., 1.]], dtype='float64')
self.assertEqual(x.dtype, 'float64')
self.assertEqual(y.dtype, 'float64')
expected_x = y.tolist()
expected_y = x.tolist()
self.assertListEqual(swap(x, y).tolist(), expected_y)
self.assertListEqual(x.tolist(), expected_x)
self.assertListEqual(y.tolist(), expected_y)