def test_add():
p1 = Power(1, 1, 1)
p2 = Power(1, 1, 1)
p_total = p1 + p2
assert isinstance(p_total, Power)
assert p_total.apparent == p1.apparent + p2.apparent
assert p_total.active == p1.active + p2.active
assert p_total.reactive != p1.reactive + p2.reactive
assert p_total.reactive == sqrt((p2.apparent + p1.apparent)**2 -
(p2.active + p1.active)**2)
def test_sub():
# Reactive power values shouldn't matter -> setting them here to something absurd.
p2 = Power(3, 2, 3)
p1 = Power(2, 1, 4)
p_total = p2 - p1
assert isinstance(p_total, Power)
assert p_total.apparent == p2.apparent - p1.apparent
assert p_total.active == p2.active - p1.active
assert p_total.reactive != p2.reactive - p1.reactive
assert p_total.reactive == sqrt((p2.apparent - p1.apparent)**2 -
(p2.active - p1.active)**2)
def __init__(self):
self.power = Power()
self.L1 = Phase()
self.L2 = Phase()
self.L3 = Phase()
self.tariff_1 = Tariff()
self.tariff_2 = Tariff()
self.frequency = float('nan')
def test_mul():
p1 = Power(1000, 1000, 1000)
p_total = p1 * 7200
assert isinstance(p_total, Energy)
assert p_total.apparent == 1000 * 2
assert p_total.active == p1.active * 2
assert p_total.reactive == p1.reactive * 2
p_total = p1 * timedelta(minutes=30)
assert isinstance(p_total, Energy)
assert p_total.apparent == 1000 / 2
assert p_total.active == p1.active / 2
assert p_total.reactive == p1.reactive / 2
def read_power(self):
self.power = Power(*self._from_float(self.read_input_register(63, 4)))
