def test_dimension_mul():
length = mtr.Dimension(L=1)
time = mtr.Dimension(T=1)
assert (length * time)._d == dict(L=1, T=1, M=0, A=0, K=0, N=0, J=0)
def test_dimension_imul():
length = mtr.Dimension(L=1)
time = mtr.Dimension(T=1)
length *= time
assert length._d == dict(L=1, T=1, M=0, A=0, K=0, N=0, J=0)
def test_dimension_neq_length_lengthsq():
length = mtr.Dimension(L=1)
lengthsq = mtr.Dimension(L=2)
assert length != lengthsq
def test_dimension_str_time():
time = mtr.Dimension(T=1)
assert str(time) == "T"
def test_dimension_neq_length_time():
length = mtr.Dimension(L=1)
time = mtr.Dimension(T=1)
assert length != time
def test_dimension_eq_length():
length = mtr.Dimension(L=1)
assert length == length
def test_dimension_ipow_zero():
length = mtr.Dimension(L=1)
length **= 0
assert length._d == dict(L=0, T=0, M=0, A=0, K=0, N=0, J=0)
def test_dimension_str_mass():
mass = mtr.Dimension(M=1)
assert str(mass) == "M"
def test_dimension_ipow_negative():
length = mtr.Dimension(L=1)
length **= -2
assert length._d == dict(L=-2, T=0, M=0, A=0, K=0, N=0, J=0)