def test_callback_resolution_weaving_2(): d = Deferred() d.add_callbacks(lambda r: fail(Exception(r + "b")), lambda e: e.value.args[0] + 'w') d.add_callbacks(lambda e: Exception(e + "x"), lambda e: e.value.args[0] + "c") d.add_callbacks(lambda r: Exception(r + "d"), lambda e: e.value.args[0] + 'y') d.add_callbacks(lambda r: fail(ValueError(r + "z")), lambda e: e.value.args[0] + 'e') d.errback(Exception('v')) assert isinstance(d.result, DeferredException) assert isinstance(d.result.value, ValueError) assert d.result.value.args[0] == "vwxyz"
def test_fail(): e = Exception('failed') d = fail(e) assert isinstance(d.result, DeferredException) assert d.result.value == e assert d.called assert not d.callbacks
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_fail_none_catches_exception(): e = Exception('will be raised') try: raise e except: d = fail() assert d.called assert isinstance(d.result, DeferredException) assert d.result.value == e
def test_callback_resolution_weaving(): d = Deferred() d.add_callbacks(lambda r: fail(Exception(r + "b")), lambda e: e.value.args[0] + 'w') d.add_callbacks(lambda e: Exception(e + "x"), lambda e: e.value.args[0] + "c") d.add_callbacks(lambda r: Exception(r + "d"), lambda e: e.value.args[0] + 'y') d.add_callbacks(lambda r: r + "z", lambda e: e.value.args[0] + 'e') d.callback("a") assert d.result == "abcde"
def test_fail_none(): d = fail() assert isinstance(d.result, DeferredException) assert d.called assert not d.callbacks
def promise(self): return fail(Exception('Something bad happened! Sucks :('))