def test_on_change_bad_functor():
m = cbm.CallbackManager()
bad = _Bad()
with pytest.raises(ValueError):
m.on_change('foo', bad)
assert len(m._callbacks) == 1
assert len(m._callbacks['foo']) == 0
def test_trigger():
m = cbm.CallbackManager()
good = _Good()
m.on_change('foo', good.method)
m.trigger('foo', 42, 43)
assert good.last_name == 'foo'
assert good.last_old == 42
assert good.last_new == 43
def test_on_change_good_closure():
def good(x, y, z):
pass
m = cbm.CallbackManager()
m.on_change('foo', good)
assert len(m._callbacks) == 1
assert len(m._callbacks['foo']) == 1
def test_on_change_bad_closure():
def bad(x, y):
pass
m = cbm.CallbackManager()
with pytest.raises(ValueError):
m.on_change('foo', bad)
assert len(m._callbacks) == 1
assert len(m._callbacks['foo']) == 0
def test_on_change_same_attr_twice_one_call():
def good1(x, y, z):
pass
def good2(x, y, z):
pass
m2 = cbm.CallbackManager()
m2.on_change('foo', good1, good2)
assert len(m2._callbacks) == 1
assert m2._callbacks['foo'] == [good1, good2]
def test_on_change_same_attr_twice_multiple_calls():
def good1(x, y, z):
pass
def good2(x, y, z):
pass
m1 = cbm.CallbackManager()
m1.on_change('foo', good1)
m1.on_change('foo', good2)
assert len(m1._callbacks) == 1
assert m1._callbacks['foo'] == [good1, good2]
def test_on_change_different_attrs():
def good1(x, y, z):
pass
def good2(x, y, z):
pass
m1 = cbm.CallbackManager()
m1.on_change('foo', good1)
m1.on_change('bar', good2)
assert len(m1._callbacks) == 2
assert m1._callbacks['foo'] == [good1]
assert m1._callbacks['bar'] == [good2]
def test_trigger_with_two_callbacks():
m = cbm.CallbackManager()
good1 = _Good()
good2 = _Good()
m.on_change('foo', good1.method)
m.on_change('foo', good2.method)
m.trigger('foo', 42, 43)
assert good1.last_name == 'foo'
assert good1.last_old == 42
assert good1.last_new == 43
assert good2.last_name == 'foo'
assert good2.last_old == 42
assert good2.last_new == 43
def test_on_change_good_partial_function():
m = cbm.CallbackManager()
p = partial(_partially_good, 'foo')
m.on_change('bar', p)
assert len(m._callbacks) == 1
def test_on_change_good_extra_kwargs_function():
m = cbm.CallbackManager()
m.on_change('bar', _just_fine)
assert len(m._callbacks) == 1
def test_on_change_good_lambda():
m = cbm.CallbackManager()
good = lambda x, y, z: x
m.on_change('foo', good)
assert len(m._callbacks) == 1
assert m._callbacks['foo'] == [good]
def test_on_change_good_function():
m = cbm.CallbackManager()
m.on_change('foo', _good)
assert len(m._callbacks) == 1
assert m._callbacks['foo'] == [_good]
def test_on_change_good_functor():
m = cbm.CallbackManager()
good = _Good()
m.on_change('foo', good)
assert len(m._callbacks) == 1
assert m._callbacks['foo'] == [good]
def test_creation():
m = cbm.CallbackManager()
assert len(m._callbacks) == 0
def test_on_change_good_extra_kwargs_method():
m = cbm.CallbackManager()
good = _Good()
m.on_change('bar', good.just_fine)
assert len(m._callbacks) == 1
def test_on_change_good_partial_method():
m = cbm.CallbackManager()
good = _Good()
p = partial(good.partially_good, 'foo')
m.on_change('bar', p)
assert len(m._callbacks) == 1
def test_on_change_bad_lambda():
m = cbm.CallbackManager()
with pytest.raises(ValueError):
m.on_change('foo', lambda x, y: x)
assert len(m._callbacks) == 1
assert len(m._callbacks['foo']) == 0
