def test_detail_dnshost_validity_flag(self):
"""
Tests that the validity flag is correctly set and unset when a
component's widget value is set to a correct and incorrect value.
"""
site = SiteConfigurationManager.get_blank_site()
dnshost = site.dnshost
control_agent = DetailDNSHostControlAgent(dnshost)
presentation_agent = control_agent.get_presentation_agent()
observer = ValidityObserver()
control_agent.get_event_bus().subscribe(
DataValidityEvent, observer.validity_changed)
presentation_agent['name'].set_text('abc')
refresh_gui()
self.assertTrue(observer.notified,
'validity observer has not been notified')
self.assertTrue(observer.flag,
'dns validity should be true')
presentation_agent['name'].set_text('@b c')
refresh_gui()
self.assertTrue(observer.notified,
'validity observer has not been notified')
self.assertFalse(observer.flag,
'dnshost validity should be false')
control_agent.get_event_bus().unsubscribe(
DataValidityEvent, observer.validity_changed)