def test_subtraction_csc_wrong_matrix_format_1():
matrix_1 = [[12, 12], "21"]
matrix_2 = [[0, 0], [0, 0]]
with pytest.raises(
ValueError,
match=
r"Every row in matrix must best list or tuple and have the same length"
):
csc_subtraction_matrices(matrix_1, matrix_2)
def test_subtraction_csc_mxn():
matrix_1 = [[1, 0, 3], [0, 0, 5]]
matrix_2 = [[1, 0, 3], [0, 0, 5]]
ar, ia, ja = csc_subtraction_matrices(matrix_1, matrix_2)
assert ar == []
assert ia == []
assert ja == [0, 0, 0, 0]
def test_subtraction_csc_zero_matrices():
matrix_1 = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]
matrix_2 = [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]]
ar, ia, ja = csc_subtraction_matrices(matrix_1, matrix_2)
assert ar == []
assert ia == []
assert ja == [0, 0, 0, 0, 0]
def test_subtraction_csc_nxn():
matrix_1 = [[1, 0, 3], [0, 0, 5], [1, 5, 0]]
matrix_2 = [[0, 2, 0], [0, 1, 5], [0, 2, 0]]
ar, ia, ja = csc_subtraction_matrices(matrix_1, matrix_2)
assert ar == [1, 1, -2, -1, 3, 3]
assert ia == [0, 2, 0, 1, 2, 0]
assert ja == [0, 2, 5, 6]
def test_subtraction_csc_empty_matrix():
matrix_1 = []
matrix_2 = [[0, 2, 0], [0, 1, 5]]
with pytest.raises(ValueError, match=r"First given matrix is empty"):
csc_subtraction_matrices(matrix_1, matrix_2)
def test_subtraction_csc_wrong_matrix_format_3():
matrix_1 = [[1, 0, 3], [0, 0], [1, 5, 0]]
matrix_2 = [[1, 0, 3], [0, 0, 5], [1, 5, 0]]
with pytest.raises(ValueError,
match=r"All matrix_1's rows must have equal length"):
csc_subtraction_matrices(matrix_1, matrix_2)
def test_subtraction_csc_wrong_matrix_format_2():
matrix_1 = [[0, 0], [0, 0]]
matrix_2 = [[12, 12], {"21"}]
with pytest.raises(ValueError,
match=r"All matrix_2's rows must have equal length"):
csc_subtraction_matrices(matrix_1, matrix_2)
def test_subtraction_csc_different_matrices_rows():
matrix_1 = [[1, 0, 3], [0, 0, 5], [1, 5, 0]]
matrix_2 = [[0, 2, 0], [0, 1, 5]]
with pytest.raises(ValueError,
match=r"Both matrices must have same number of rows."):
csc_subtraction_matrices(matrix_1, matrix_2)