Examples with VaadinServiceInitListener com.vaadin.flow.server.VaadinServiceInitListener used on opensource projects

Example 1 with VaadinServiceInitListener

use of com.vaadin.flow.server.VaadinServiceInitListener in project flow by vaadin.

the class VaadinServiceTest method testBootstrapListenersCreation.

@Test
public void testBootstrapListenersCreation() throws ServiceException {
    // in this test the actual behavior of the listeners is not evaluated.
    // That test can be found at the BootstrapHandlerTest.
    AtomicBoolean listener1Run = new AtomicBoolean(false);
    AtomicBoolean listener2Run = new AtomicBoolean(false);
    BootstrapListener listener1 = evt -> listener1Run.set(true);
    BootstrapListener listener2 = evt -> listener2Run.set(true);
    VaadinServiceInitListener initListener = evt -> evt.addBootstrapListener(listener1);
    MockInstantiator instantiator = new MockInstantiator(initListener) {

        @Override
        public Stream<BootstrapListener> getBootstrapListeners(Stream<BootstrapListener> serviceInitListeners) {
            List<BootstrapListener> defaultListeners = serviceInitListeners.collect(Collectors.toList());
            assertEquals(Collections.singletonList(listener1), defaultListeners);
            return Stream.of(listener2);
        }
    };
    MockVaadinServletService service = new MockVaadinServletService();
    service.init(instantiator);
    Assert.assertFalse(listener1Run.get());
    Assert.assertFalse(listener2Run.get());
    service.modifyBootstrapPage(null);
    Assert.assertFalse(listener1Run.get());
    Assert.assertTrue(listener2Run.get());
}