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event_test.py
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event_test.py
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import asyncio
import unittest
from eventkit import Event
import eventkit as ev
loop = asyncio.get_event_loop()
run = loop.run_until_complete
class Object:
def __init__(self):
self.value = 0
def method(self, x, y):
self.value += x - y
def __call__(self, x, y):
self.value += x - y
async def ait(it):
for x in it:
await asyncio.sleep(0)
yield x
class EventTest(unittest.TestCase):
def test_functor(self):
obj1 = Object()
obj2 = Object()
event = Event('test')
event += obj1
event.emit(9, 4)
self.assertEqual(obj1.value, 5)
event += obj2
event.emit(5, 6)
self.assertEqual(obj1.value, 4)
self.assertEqual(obj2.value, -1)
del obj2
self.assertEqual(len(event), 1)
event -= obj1
self.assertNotIn(obj1, event)
self.assertEqual(len(event), 0)
def test_method(self):
obj1 = Object()
obj2 = Object()
event = Event('test')
event += obj1.method
event.emit(9, 4)
self.assertEqual(obj1.value, 5)
event += obj2.method
event.emit(5, 6)
self.assertEqual(obj1.value, 4)
self.assertEqual(obj2.value, -1)
del obj2
self.assertEqual(len(event), 1)
event -= obj1.method
self.assertNotIn(obj1.method, event)
self.assertEqual(len(event), 0)
event += obj1.method
event += obj1.method
self.assertEqual(len(event), 2)
event.disconnect_obj(obj1)
self.assertEqual(len(event), 0)
def test_function(self):
def f1(x, y):
nonlocal value1
value1 += x - y
def f2(x, y):
nonlocal value2
value2 += x - y
value1 = 0
value2 = 0
event = Event('test')
event += f1
event.emit(9, 4)
self.assertEqual(value1, 5)
event += f2
event.emit(5, 6)
self.assertEqual(value1, 4)
self.assertEqual(value2, -1)
event -= f1
self.assertNotIn(f1, event)
event -= f2
self.assertNotIn(f2, event)
self.assertEqual(len(event), 0)
def test_cmethod(self):
import math
event = Event('test')
event += math.pow
event.emit(2, 8)
def test_keep_ref(self):
import weakref
obj = Object()
event = Event('test')
event.connect(obj.method, keep_ref=True)
wr = weakref.ref(obj)
del obj
event.emit(9, 4)
self.assertEqual(wr().value, 5)
obj = wr()
event.emit(5, 6)
self.assertEqual(obj.value, 4)
self.assertIn(obj.method, event)
event -= obj.method
self.assertNotIn(obj.method, event)
def test_coro_func(self):
async def coro(d):
result.append(d)
await asyncio.sleep(0)
result = []
event = Event('test')
event += coro
event.emit(4)
event.emit(2)
run(asyncio.sleep(0))
self.assertEqual(result, [4, 2])
result.clear()
event -= coro
event.emit(8)
run(asyncio.sleep(0))
self.assertEqual(result, [])
def test_aiter(self):
async def coro():
return [v async for v in event]
a = list(range(0, 10))
event = Event.sequence(a)
result = run(coro())
self.assertEqual(result, a)
def test_fork(self):
event = Event.range(4, 10)[ev.Min, ev.Max, ev.Op().sum()].zip()
self.assertEqual(event.run(), [
(4, 4, 4), (4, 5, 9), (4, 6, 15), (4, 7, 22),
(4, 8, 30), (4, 9, 39)])
if __name__ == "__main__":
unittest.main()