def test_once():
"""test event registering with the once method"""
obs = Observable()
def once_test():
pass
obs.once("once_test", once_test)
assert len(obs._events["once_test"]) == 1
assert obs.trigger("once_test")
assert obs._events["once_test"] == []
def test_once():
"""test event registering with the once method"""
obs = Observable()
def once_test():
pass
obs.once("once_test", once_test)
assert len(obs._events["once_test"]) == 1
assert obs.trigger("once_test")
assert obs._events["once_test"] == []
def test_once():
"""test event registering with the once method"""
obs = Observable()
nose.assert_false(obs.events)
def once_test():
pass
obs.once("once_test", once_test)
nose.assert_equals(len(obs.events["once_test"]), 1)
nose.assert_true(obs.trigger("once_test"))
nose.assert_equals(obs.events["once_test"], [])
