def test_scatter_columns(self):
M = Matrix((2, 2))
M1 = Matrix((2, 3))
M[0, 0] = 1
M[0, 1] = 2
M[1, 0] = 3
M[1, 1] = 4
M.scatter(M1, columns=[0, 2])
np.testing.assert_equal(M1, [[1, 0, 2], [3, 0, 4]])
def test_scatter_rows(self):
M = Matrix((2, 2))
M1 = Matrix((3, 2))
M[0, 0] = 1
M[0, 1] = 2
M[1, 0] = 3
M[1, 1] = 4
M.scatter(M1, rows=[0, 2])
np.testing.assert_equal(M1, [[1, 2], [0, 0], [3, 4]])