def test_CreateRoot():
#
# Test create and then modify state of a topic object
#
nameTuple = ('root',)
description = 'root description'
msgArgsInfo = None
# when parent is None, only nameTuple=ALL_TOPICS is allowed, thereby
# guaranteeing that only one tree root can be created
pytest.raises(ValueError, Topic, treeConfig, nameTuple, description, msgArgsInfo)
# create the ALL TOPICS topic; it has no message args
nameTuple = (ALL_TOPICS,)
argSpec = ArgSpecGiven( dict() )
msgArgsInfo = ArgsInfo(nameTuple, argSpec, None)
obj = Topic(treeConfig, nameTuple, description, msgArgsInfo)
# verify its state is as expected after creation:
assert obj.getListeners() == []
assert obj.getNumListeners() == 0
assert obj.hasListeners() == False
def listener1(): pass
def listener2(): pass
def badListener1(arg1): pass # extra required arg
def listener3(arg1=None): pass # extra is optional
assert obj.isValid(listener1)
assert not obj.isValid(badListener1)
assert obj.isValid(listener3)
global rootTopic
rootTopic = obj
def test0_CreateRoot():
#
# Test create and then modify state of a topic object
#
nameTuple = ('root', )
description = 'root description'
msgArgsInfo = None
# when parent is None, only nameTuple=ALL_TOPICS is allowed, thereby
# guaranteeing that only one tree root can be created
pytest.raises(ValueError, Topic, treeConfig, nameTuple, description,
msgArgsInfo)
# create the ALL TOPICS topic; it has no message args
nameTuple = (ALL_TOPICS, )
argSpec = ArgSpecGiven(dict())
msgArgsInfo = ArgsInfo(nameTuple, argSpec, None)
obj = Topic(treeConfig, nameTuple, description, msgArgsInfo)
# verify its state is as expected after creation:
assert obj.getListeners() == []
assert obj.getNumListeners() == 0
assert obj.hasListeners() == False
def listener1():
pass
def listener2():
pass
def badListener1(arg1):
pass # extra required arg
def listener3(arg1=None):
pass # extra is optional
assert obj.isValid(listener1)
assert not obj.isValid(badListener1)
assert obj.isValid(listener3)
global rootTopic
rootTopic = obj
