def test_quantity_postprocessing():
q1 = Quantity('q1')
q2 = Quantity('q2')
SI.set_quantity_dimension(q1, length*pressure**2*temperature/time)
SI.set_quantity_dimension(q2, energy*pressure*temperature/(length**2*time))
assert q1 + q2
q = q1 + q2
Dq = Dimension(SI.get_dimensional_expr(q))
assert SI.get_dimension_system().get_dimensional_dependencies(Dq) == {
'length': -1,
'mass': 2,
'temperature': 1,
'time': -5,
}
def test_quantity_postprocessing():
q1 = Quantity("q1")
q2 = Quantity("q2")
SI.set_quantity_dimension(q1, length * pressure**2 * temperature / time)
SI.set_quantity_dimension(
q2, energy * pressure * temperature / (length**2 * time))
assert q1 + q2
q = q1 + q2
Dq = Dimension(SI.get_dimensional_expr(q))
assert SI.get_dimension_system().get_dimensional_dependencies(Dq) == {
"length": -1,
"mass": 2,
"temperature": 1,
"time": -5,
}
def test_quantity_abs():
v_w1 = Quantity('v_w1')
v_w2 = Quantity('v_w2')
v_w3 = Quantity('v_w3')
v_w1.set_global_relative_scale_factor(1, meter / second)
v_w2.set_global_relative_scale_factor(1, meter / second)
v_w3.set_global_relative_scale_factor(1, meter / second)
expr = v_w3 - Abs(v_w1 - v_w2)
assert SI.get_dimensional_expr(v_w1) == (length / time).name
Dq = Dimension(SI.get_dimensional_expr(expr))
with warns_deprecated_sympy():
Dq1 = Dimension(Quantity.get_dimensional_expr(expr))
assert Dq == Dq1
assert SI.get_dimension_system().get_dimensional_dependencies(Dq) == {
'length': 1,
'time': -1,
}
assert meter == sqrt(meter**2)