Fix asynchronous tests to assert correctly,  using the whenReady helper tests
Fix asynchronous tests to assert correctly,  using the whenReady helper tests

dvla/vehicles-online,dvla/vrm-retention-online,dvla/vehicles-presentation-common,dvla/vrm-retention-online,dvla/vehicles-presentation-common,dvla/vehicles-online,dvla/vrm-retention-online,dvla/vrm-retention-online,dvla/vehicles-presentation-common,dvla/vehicles-online,dvla/vehicles-online