def test_make_signal(self):
"""Tests signal creation."""
Signal(['p1', 'p2'])
sig = Signal(['p1'], new_args=['p3'], old_args=['p4'])
self.assertEqual(sig._args,
{'p1': Signal.REQUIRED,
'p3': Signal.OPTIONAL,
'p4': Signal.DEPRECATED})
with self.assertRaises(ValueError):
Signal(['p1', 'p2'], new_args=['p2', 'p3'])
def test_calls(self):
"""Tests actually emitting signals."""
def called(**kwargs):
called.last = kwargs
def callsig(res_type, **kwargs):
if res_type not in ('succ', 'warn', 'fail'):
raise TypeError
called.last = None
with warnings.catch_warnings(record=True) as w:
warnings.resetwarnings()
sig(**kwargs)
if res_type == 'fail' or res_type == 'warn':
self.assertEqual(len(w), 1)
if res_type == 'succ' or res_type == 'warn':
self.assertEqual(called.last, kwargs)
sig = Signal(['a', 'b'], new_args=['c'], old_args=['d'])
sig.subscribe(called)
callsig('succ', a=1, b=2)
callsig('succ', a=1, b=2, c=3)
callsig('fail', a=1)
callsig('warn', a=1, b=2, d=3)
def test_calls(self):
"""Tests actually emitting signals."""
def called(**kwargs):
called.last = kwargs
def callsig(res_type, **kwargs):
if res_type not in ('succ', 'warn', 'fail'):
raise TypeError
called.last = None
with warnings.catch_warnings(record=True) as w:
warnings.resetwarnings()
sig(**kwargs)
if res_type == 'fail' or res_type == 'warn':
self.assertEqual(len(w), 1)
if res_type == 'succ' or res_type == 'warn':
self.assertEqual(called.last, kwargs)
sig = Signal(['a', 'b'], new_args=['c'], old_args=['d'])
sig.subscribe(called)
callsig('succ', a=1, b=2)
callsig('succ', a=1, b=2, c=3)
callsig('fail', a=1)
callsig('warn', a=1, b=2, d=3)
def test_subscription(self):
"""Tests subscribe() and unsubscribe()."""
def foo(info):
pass
sig = Signal()
sig.subscribe(foo)
with self.assertRaises(TypeError):
sig.subscribe(object())
with self.assertRaises(TypeError):
sig.subscribe(2)
sig.unsubscribe(4)
self.assertEqual(sig._listeners, set([foo]))
sig.unsubscribe(foo)
self.assertFalse(sig._listeners)
def test_subscription(self):
"""Tests subscribe() and unsubscribe()."""
def foo(info):
pass
sig = Signal()
sig.subscribe(foo)
with self.assertRaises(TypeError):
sig.subscribe(object())
with self.assertRaises(TypeError):
sig.subscribe(2)
sig.unsubscribe(4)
self.assertEqual(sig._listeners, set([foo]))
sig.unsubscribe(foo)
self.assertFalse(sig._listeners)