def test_emit_records_call():
s = Signal()
s.add('foo', record=True)
s.add('bar', record=True)
s.add('baz', record=False)
assert s.emissions == ()
s.emit('foo', 123)
s.emit('bar', 'hello', 'world')
s.emit('foo', 'and', this='that')
s.emit('baz', 0)
s.emit('bar', four=56)
assert s.emissions == (
('foo', {
'args': (123, ),
'kwargs': {}
}),
('bar', {
'args': ('hello', 'world'),
'kwargs': {}
}),
('foo', {
'args': ('and', ),
'kwargs': {
'this': 'that'
}
}),
('bar', {
'args': (),
'kwargs': {
'four': 56
}
}),
)
def test_adding_adds_signal():
s = Signal()
assert s.signals == {}
assert s._record_signals == []
s.add('foo')
assert s.signals == {'foo': []}
assert s._record_signals == []
s.add('bar', record=True)
assert s.signals == {'foo': [], 'bar': []}
assert s._record_signals == ['bar']
s.add('baz', record=False)
assert s.signals == {'foo': [], 'bar': [], 'baz': []}
assert s._record_signals == ['bar']
def test_adding_duplicate_signal():
s = Signal('foo')
with pytest.raises(RuntimeError, match=r"^Signal already added: 'foo'$"):
s.add('foo')
def test_adding_unhashable_signal():
s = Signal()
with pytest.raises(TypeError, match=r'^Unhashable signal: \{\}$'):
assert s.add({})