def test_deferred_exception_catch():
def dummy_errback(deferred_exception):
deferred_exception.catch(OSError)
return "caught"
deferred = Deferred()
deferred.add_errback(dummy_errback)
deferred.errback(OSError())
assert deferred.result == 'caught'
def test_errback():
holder = []
d = Deferred()
e = Exception('errback test')
d.add_errback(lambda e: holder.append(e))
d.errback(e)
assert isinstance(holder[0], DeferredException)
assert holder[0].value == e
def test_callback_resolution():
d = Deferred()
d.add_callback(lambda r: fail(Exception(r + "b")))
d.add_errback(lambda e: e.value.args[0] + "c")
d.add_callbacks(lambda r: r + "d", lambda e: e.value.args[0] + 'f')
d.callback("a")
assert d.result == "abcd"
def test_deferred_exception_catch():
def dummy_errback(deferred_exception):
deferred_exception.catch(OSError)
return "caught"
deferred = Deferred()
deferred.add_errback(dummy_errback)
deferred.errback(OSError())
assert deferred.result == 'caught'
def test_errback():
holder = []
d = Deferred()
e = Exception('errback test')
d.add_errback(lambda e: holder.append(e))
d.errback(e)
assert isinstance(holder[0], DeferredException)
assert holder[0].value == e
def test_callback_resolution():
d = Deferred()
d.add_callback(lambda r: fail(Exception(r + "b")))
d.add_errback(lambda e: e.value.args[0] + "c")
d.add_callbacks(lambda r: r + "d", lambda e: e.value.args[0] + 'f')
d.callback("a")
assert d.result == "abcd"
def test_callbacks_and_errbacks_return_original_deferred():
d = Deferred()
assert d.add_callback(lambda a: None) is d
assert d.add_errback(lambda a: None) is d
assert d.add_callbacks(lambda a: None, lambda a: None) is d
def test_callbacks_and_errbacks_return_original_deferred():
d = Deferred()
assert d.add_callback(lambda a: None) is d
assert d.add_errback(lambda a: None) is d
assert d.add_callbacks(lambda a: None, lambda a: None) is d