def test_cb_subscribed_no_change(self):
domain = VariableDomain('d', 'd', [1, 2, 3, 4])
v = ExternalVariable('v', domain, value=1)
cb = MagicMock()
v.value = 2
v.subscribe(cb)
# The callback must be called only if the value has really changed
v.value = 2
self.assertFalse(cb.called)
v.value = 3
cb.assert_called_with(3)
cb.reset_mock()
v.value = 3
self.assertFalse(cb.called)
def test_cb_subscribed(self):
domain = VariableDomain('d', 'd', [1, 2, 3, 4])
v = ExternalVariable('v', domain, value=1)
cb = MagicMock()
v.subscribe(cb)
v.value = 2
cb.assert_called_with(2)
def test_cb_unsusbcribed(self):
domain = VariableDomain('d', 'd', [1, 2, 3, 4])
v = ExternalVariable('v', domain, value=1)
cb = MagicMock()
v.subscribe(cb)
v.unsubscribe(cb)
v.value = 2
self.assertFalse(cb.called)
def test_set_value_in_domain(self):
domain = VariableDomain('d', 'd', [1, 2, 3, 4])
v = ExternalVariable('v', domain, value=1)
v.value = 2
self.assertEqual(v.value, 2)