def test_equality():
v1 = Vector([1, 2, 3])
v2 = Vector([1, 2, 3])
assert v1 == v2
def test_scalar_sum():
v = Vector([1, 2, 3, 4, 5])
assert v + 1 == Vector([2, 3, 4, 5, 6])
def test_scalar_rsum():
v = Vector([1, 2, 3, 4, 5])
assert 1 + v == Vector([2, 3, 4, 5, 6])
def test_dot_product():
v1 = Vector([2, 3, 4])
v2 = Vector([-2, 1, -3])
assert v1 @ v2 == -13
def test_length():
v = Vector([1, 2, 3, 4, 5])
assert len(v) == 5
def test_scalar_rdifference():
v = Vector([1, 2, 3, 4, 5])
assert 1 - v == Vector([0, -1, -2, -3, -4])
def test_product():
v = Vector([1, 2, 3])
assert v * 3 == Vector([3, 6, 9])
def test_modification_with_wrong_value():
v = Vector([1, 2, 3])
with pytest.raises(ValueError):
v[1] = 'abc'
def test_vector_sum():
v1 = Vector([1, 2, 3, 4])
v2 = Vector([3, 2, 4, 1])
assert v1 + v2 == Vector([4, 4, 7, 5])
def test_index_error():
v = Vector([1, 2, 3])
with pytest.raises(IndexError):
v[10]
def test_not_number():
with pytest.raises(ValueError):
Vector([1, 2, 'a'])
def test_string_representation():
v = Vector([3, 2, 1])
assert str(v) == '[3, 2, 1]'
def test_index_modification():
v = Vector([4, 3, 0, 2, -1])
v[3] = 5
assert v[3] == 5
def test_index_access():
v = Vector([4, 3, 0, 2, -1])
assert v[3] == 2
def test_rsum_with_not_numerical_input():
v = Vector([1, 2, 3, 4, 5])
with pytest.raises(ValueError):
'a' + v
def test_different_lengths_for_dot_product():
v1 = Vector([1, 2, 3, 4])
v2 = Vector([1, 2, 3])
with pytest.raises(ValueError):
v1 @ v2
def test_scalar_difference():
v = Vector([1, 2, 3, 4, 5])
assert v - 1 == Vector([0, 1, 2, 3, 4])
def test_different_lengths_for_difference():
v1 = Vector([1, 2, 3, 4])
v2 = Vector([1, 2, 3])
with pytest.raises(ValueError):
v1 - v2
def test_rdifference_with_not_numerical_input():
v = Vector([1, 2, 3, 4, 5])
with pytest.raises(ValueError):
'a' - v
def test_norm():
v = Vector([3, 4])
assert v.norm() == 5
def test_rproduct():
v = Vector([1, 2, 3])
assert 3 * v == Vector([3, 6, 9])
def test_vector_difference():
v1 = Vector([1, 2, 3, 4])
v2 = Vector([3, 2, 4, 1])
assert v1 - v2 == Vector([-2, 0, -1, 3])
def test_dot_product_with_not_numerical_input():
v = Vector([1, 2, 3])
with pytest.raises(ValueError):
v @ 'a'
def test_inequality_with_not_vector():
assert Vector() != 5