def test_someloads(self):
"""For various loads, do a montecarlo run comparing request_ok ratio
1000 times against expected_ok_ratio (complement of load_ratio)"""
for load_ratio in (0.0, 0.25, 0.50, 0.75, 1.0):
load = load_ratio * (self.th_max - self.th_min) + self.th_min
n_ok = 0.0
for _ in xrange(self.n_times):
n_ok = n_ok + (request_ok(load, self.th_min, self.th_max))
expected_ok_ratio = 1 - load_ratio
ok_ratio = n_ok / self.n_times
# allow 5% difference:
self.assertTrue((expected_ok_ratio - ok_ratio) ** 2 < 0.05 ** 2)
def test_overloaded(self):
"""Load just above th_max must never return OK"""
for _ in xrange(self.n_times):
self.assertFalse(
request_ok(1.01 * self.th_max, self.th_min, self.th_max))
def test_unloaded(self):
"""Load just below th_min must always return OK"""
for _ in xrange(self.n_times):
self.assertTrue(
request_ok(0.99 * self.th_min, self.th_min, self.th_max))