def test_source_stack_integrity(self):
"""Emitter checks source stack"""
em = EventEmitter(type='test_event')
def cb(ev):
ev._sources.append('x')
em.connect(cb)
try:
em()
except RuntimeError as err:
if str(err) != 'Event source-stack mismatch.':
raise
em.disconnect()
def cb(ev):
ev._sources = []
em.connect(cb)
try:
em()
except IndexError:
pass
def test_chained_emitters(self):
"""Chained emitters"""
em1 = EventEmitter(source=None, type='test_event1')
em2 = EventEmitter(source=self, type='test_event2')
em1.connect(em2)
em1.connect(self.record_event)
self.result = None
ev = em1()
self.assert_result(
event=ev,
event_class=Event,
source=None,
type='test_event1',
sources=[None])
# sources look different from second emitter, but type is the same.
em1.disconnect(self.record_event)
em2.connect(self.record_event)
self.result = None
ev = em1()
self.assert_result(
event=ev,
event_class=Event,
source=self,
type='test_event1',
sources=[
None,
self])
def test_chained_emitters(self):
"""Chained emitters"""
em1 = EventEmitter(source=None, type='test_event1')
em2 = EventEmitter(source=self, type='test_event2')
em1.connect(em2)
em1.connect(self.record_event)
self.result = None
ev = em1()
self.assert_result(
event=ev,
event_class=Event,
source=None,
type='test_event1',
sources=[None])
# sources look different from second emitter, but type is the same.
em1.disconnect(self.record_event)
em2.connect(self.record_event)
self.result = None
ev = em1()
self.assert_result(
event=ev,
event_class=Event,
source=self,
type='test_event1',
sources=[
None,
self])
def test_emission_order(self):
"""Event emission order"""
em = EventEmitter(type='test_event')
def cb1(ev):
self.result = 1
def cb2(ev):
self.result = 2
em.connect(cb1)
em.connect(cb2)
self.result = None
em()
assert self.result == 1, "Events emitted in wrong order"
em.disconnect()
em.connect(cb2)
em.connect(cb1)
self.result = None
em()
assert self.result == 2, "Events emitted in wrong order"
def test_disconnect(self):
"""Emitter disconnection"""
em = EventEmitter(type='test_event')
def cb1(ev):
self.result = 1
def cb2(ev):
self.result = 2
em.connect((self, 'record_event'))
em.connect(cb1)
em.connect(cb2)
self.result = None
em.disconnect(cb2)
em.disconnect(cb2) # should pass silently
ev = em()
self.assert_result(event=ev)
self.result = None
em.disconnect((self, 'record_event'))
ev = em()
assert self.result == 1
self.result = None
em.connect(cb1)
em.connect(cb2)
em.connect((self, 'record_event'))
em.disconnect()
em()
assert self.result is None
def test_disconnect(self):
"""Emitter disconnection"""
em = EventEmitter(type='test_event')
def cb1(ev):
self.result = 1
def cb2(ev):
self.result = 2
em.connect((self, 'record_event'))
em.connect(cb1)
em.connect(cb2)
self.result = None
em.disconnect(cb2)
em.disconnect(cb2) # should pass silently
ev = em()
self.assert_result(event=ev)
self.result = None
em.disconnect((self, 'record_event'))
ev = em()
assert self.result == 1
self.result = None
em.connect(cb1)
em.connect(cb2)
em.connect((self, 'record_event'))
em.disconnect()
em()
assert self.result is None
def test_source_stack_integrity(self):
"""Emitter checks source stack"""
em = EventEmitter(type='test_event')
def cb(ev):
ev._sources.append('x')
em.connect(cb)
try:
em()
except RuntimeError as err:
if str(err) != 'Event source-stack mismatch.':
raise
em.disconnect()
def cb(ev):
ev._sources = []
em.connect(cb)
try:
em()
except IndexError:
pass
def test_event_connect_order():
"""Test event connection order"""
def a():
return
def b():
return
def c():
return
def d():
return
def e():
return
def f():
return
em = EventEmitter(type='test_event')
assert_raises(ValueError, em.connect, c, before=['c', 'foo'])
assert_raises(ValueError, em.connect, c, position='foo')
assert_raises(TypeError, em.connect, c, ref=dict())
em.connect(c, ref=True)
assert_equal((c, ), tuple(em.callbacks))
em.connect(c)
assert_equal((c, ), tuple(em.callbacks))
em.connect(d, ref=True, position='last')
assert_equal((c, d), tuple(em.callbacks))
em.connect(b, ref=True) # position='first'
assert_equal((b, c, d), tuple(em.callbacks))
assert_raises(RuntimeError, em.connect, a, before='c', after='d') # can't
em.connect(a, ref=True, before=['c', 'd']) # first possible pos == 0
assert_equal((a, b, c, d), tuple(em.callbacks))
em.connect(f, ref=True, after=['c', 'd'])
assert_equal((a, b, c, d, f), tuple(em.callbacks))
em.connect(e, ref=True, after='d', before='f')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref=True, after='a', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref='e', after='d', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, after='d', before='f', position='first') # no name
assert_equal(('a', 'b', 'c', 'd', None, 'f'), tuple(em.callback_refs))
em.disconnect(e)
assert_raises(ValueError, em.connect, e, ref='d') # duplicate name
em.connect(e, ref=True, after=[], before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
assert_equal((a, b, c, d, e, f), tuple(em.callbacks))
old_e = e
def e():
return
assert_raises(ValueError, em.connect, e, ref=True) # duplicate name
em.connect(e)
assert_equal((None, 'a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
assert_equal((e, a, b, c, d, old_e, f), tuple(em.callbacks))
def test_event_connect_order():
"""Test event connection order"""
def a():
return
def b():
return
def c():
return
def d():
return
def e():
return
def f():
return
em = EventEmitter(type='test_event')
assert_raises(ValueError, em.connect, c, before=['c', 'foo'])
assert_raises(ValueError, em.connect, c, position='foo')
assert_raises(TypeError, em.connect, c, ref=dict())
em.connect(c, ref=True)
assert_equal((c,), tuple(em.callbacks))
em.connect(c)
assert_equal((c,), tuple(em.callbacks))
em.connect(d, ref=True, position='last')
assert_equal((c, d), tuple(em.callbacks))
em.connect(b, ref=True) # position='first'
assert_equal((b, c, d), tuple(em.callbacks))
assert_raises(RuntimeError, em.connect, a, before='c', after='d') # can't
em.connect(a, ref=True, before=['c', 'd']) # first possible pos == 0
assert_equal((a, b, c, d), tuple(em.callbacks))
em.connect(f, ref=True, after=['c', 'd'])
assert_equal((a, b, c, d, f), tuple(em.callbacks))
em.connect(e, ref=True, after='d', before='f')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref=True, after='a', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, ref='e', after='d', before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
em.disconnect(e)
em.connect(e, after='d', before='f', position='first') # no name
assert_equal(('a', 'b', 'c', 'd', None, 'f'), tuple(em.callback_refs))
em.disconnect(e)
assert_raises(ValueError, em.connect, e, ref='d') # duplicate name
em.connect(e, ref=True, after=[], before='f', position='last')
assert_equal(('a', 'b', 'c', 'd', 'e', 'f'), tuple(em.callback_refs))
assert_equal((a, b, c, d, e, f), tuple(em.callbacks))
old_e = e
def e():
return
assert_raises(ValueError, em.connect, e, ref=True) # duplicate name
em.connect(e)
assert_equal((None, 'a', 'b', 'c', 'd', 'e', 'f'),
tuple(em.callback_refs))
assert_equal((e, a, b, c, d, old_e, f), tuple(em.callbacks))
