def test_computations(self):
eq = self.assertEqual
a = Duration(7) # One week
b = Duration(0, 60) # One minute
c = Duration(0, 0, 1000) # One millisecond
eq(a + b + c, Duration(7, 60, 1000))
eq(a - b, Duration(6, 24 * 3600 - 60))
eq(b.__rsub__(a), Duration(6, 24 * 3600 - 60))
eq(-a, Duration(-7))
eq(+a, Duration(7))
eq(-b, Duration(-1, 24 * 3600 - 60))
eq(-c, Duration(-1, 24 * 3600 - 1, 999000))
eq(abs(a), a)
eq(abs(-a), a)
eq(Duration(6, 24 * 3600), a)
eq(Duration(0, 0, 60 * 1000000), b)
eq(a * 10, Duration(70))
eq(a * 10, 10 * a)
eq(a * 10, 10 * a)
eq(b * 10, Duration(0, 600))
eq(10 * b, Duration(0, 600))
eq(b * 10, Duration(0, 600))
eq(c * 10, Duration(0, 0, 10000))
eq(10 * c, Duration(0, 0, 10000))
eq(c * 10, Duration(0, 0, 10000))
eq(a * -1, -a)
eq(b * -2, -b - b)
eq(c * -2, -c + -c)
eq(b * (60 * 24), (b * 60) * 24)
eq(b * (60 * 24), (60 * b) * 24)
eq(c * 1000, Duration(0, 1))
eq(1000 * c, Duration(0, 1))
eq(a // 7, Duration(1))
eq(b // 10, Duration(0, 6))
eq(c // 1000, Duration(0, 0, 1))
eq(a // 10, Duration(0, 7 * 24 * 360))
eq(a // 3600000, Duration(0, 0, 7 * 24 * 1000))
eq(a / 0.5, Duration(14))
eq(b / 0.5, Duration(0, 120))
eq(a / 7, Duration(1))
eq(b / 10, Duration(0, 6))
eq(c / 1000, Duration(0, 0, 1))
eq(a / 10, Duration(0, 7 * 24 * 360))
eq(a / 3600000, Duration(0, 0, 7 * 24 * 1000))
# Multiplication by float
us = Duration(microseconds=1)
eq((3 * us) * 0.5, 2 * us)
eq((5 * us) * 0.5, 2 * us)
eq(0.5 * (3 * us), 2 * us)
eq(0.5 * (5 * us), 2 * us)
eq((-3 * us) * 0.5, -2 * us)
eq((-5 * us) * 0.5, -2 * us)
# See http://bugs.python.org/review/23521
eq(Duration(seconds=1) * 0.123456, Duration(microseconds=123456))
eq(Duration(seconds=1) * 0.6112295, Duration(microseconds=611230))
# Division by int and float
eq((3 * us) / 2, 2 * us)
eq((5 * us) / 2, 2 * us)
eq((-3 * us) / 2.0, -2 * us)
eq((-5 * us) / 2.0, -2 * us)
eq((3 * us) / -2, -2 * us)
eq((5 * us) / -2, -2 * us)
eq((3 * us) / -2.0, -2 * us)
eq((5 * us) / -2.0, -2 * us)
for i in range(-10, 10):
eq((i * us / 3) // us, round(i / 3))
for i in range(-10, 10):
eq((i * us / -3) // us, round(i / -3))
# See http://bugs.python.org/review/23521
eq(Duration(seconds=1) / (1 / 0.6112295), Duration(microseconds=611230))
# http://bugs.python.org/review/11576
eq(Duration(999999999, 86399, 999999) - Duration(999999999, 86399, 999998), Duration(0, 0, 1))
eq(Duration(999999999, 1, 1) - Duration(999999999, 1, 0), Duration(0, 0, 1))