def test_computing_the_magnitude_of_vector_1_2_3():
# Given
v = Vector(1, 2, 3)
# Then
assert v.magnitude() == sqrt(14)
def test_computing_the_magnitude_of_vector_negative1_negative2_negative3():
# Given
v = Vector(-1, -2, -3)
# Then
assert v.magnitude() == sqrt(14)
def test_computing_the_magnitude_of_vector_0_0_1():
# Given
v = Vector(0, 0, 1)
# Then
assert v.magnitude() == 1