def test_length_of_the_segment_raises_type_error_when_none_provided():
with pytest.raises(TypeError):
calculate_length_of_the_segment(None, None, None, None)
def test_length_of_the_segment():
assert calculate_length_of_the_segment(-7, -4, 10, 3) == 18.384776310850235
def test_length_of_the_segment_if_works_with_switched_order_of_points():
assert calculate_length_of_the_segment(10, 3, -7, -4) == 18.384776310850235
def test_length_of_the_segment_on_horizontal_distance():
assert calculate_length_of_the_segment(2, 1, -2, 1) == 4
def test_length_of_the_segment_on_vertical_distance():
assert calculate_length_of_the_segment(1, 3, 1, 10) == 7
def test_length_of_the_segment_returns_zero_distance_when_called_on_zero():
assert calculate_length_of_the_segment(0, 0, 0, 0) == 0
def test_length_of_segment_raises_value_error_when_one_argument_is_string():
with pytest.raises(ValueError):
calculate_length_of_the_segment('1', 2, 3, 4)
def test_length_of_the_segment_raises_value_error_when_string_provided():
with pytest.raises(ValueError):
calculate_length_of_the_segment('aoeu', 'aoeu', 'aoeu', 'aoeu')