kombu/t/unit/test_clocks.py

90 lines
2.3 KiB
Python

from __future__ import absolute_import, unicode_literals
import pickle
from heapq import heappush
from time import time
from case import Mock
from kombu.clocks import LamportClock, timetuple
class test_LamportClock:
def test_clocks(self):
c1 = LamportClock()
c2 = LamportClock()
c1.forward()
c2.forward()
c1.forward()
c1.forward()
c2.adjust(c1.value)
assert c2.value == c1.value + 1
assert repr(c1)
c2_val = c2.value
c2.forward()
c2.forward()
c2.adjust(c1.value)
assert c2.value == c2_val + 2 + 1
c1.adjust(c2.value)
assert c1.value == c2.value + 1
def test_sort(self):
c = LamportClock()
pid1 = 'a.example.com:312'
pid2 = 'b.example.com:311'
events = []
m1 = (c.forward(), pid1)
heappush(events, m1)
m2 = (c.forward(), pid2)
heappush(events, m2)
m3 = (c.forward(), pid1)
heappush(events, m3)
m4 = (30, pid1)
heappush(events, m4)
m5 = (30, pid2)
heappush(events, m5)
assert str(c) == str(c.value)
assert c.sort_heap(events) == m1
assert c.sort_heap([m4, m5]) == m4
assert c.sort_heap([m4, m5, m1]) == m4
class test_timetuple:
def test_repr(self):
x = timetuple(133, time(), 'id', Mock())
assert repr(x)
def test_pickleable(self):
x = timetuple(133, time(), 'id', 'obj')
assert pickle.loads(pickle.dumps(x)) == tuple(x)
def test_order(self):
t1 = time()
t2 = time() + 300 # windows clock not reliable
a = timetuple(133, t1, 'A', 'obj')
b = timetuple(140, t1, 'A', 'obj')
assert a.__getnewargs__()
assert a.clock == 133
assert a.timestamp == t1
assert a.id == 'A'
assert a.obj == 'obj'
assert a <= b
assert b >= a
assert (timetuple(134, time(), 'A', 'obj').__lt__(tuple()) is
NotImplemented)
assert timetuple(134, t2, 'A', 'obj') > timetuple(133, t1, 'A', 'obj')
assert timetuple(134, t1, 'B', 'obj') > timetuple(134, t1, 'A', 'obj')
assert (timetuple(None, t2, 'B', 'obj') >
timetuple(None, t1, 'A', 'obj'))