Creating a WicketApplication through Guice

HomePage.java

public class HomePage extends WebPage {

	@Inject
	private Injector injector;

	public HomePage(final PageParameters parameters) {
		super(parameters);
	
		String hello = injector.getInstance(Key.get(String.class, Names.named("hello")));
		add(new Label("hello", hello));
	}
}

TestHomePage.java

public class TestHomePage {
	private WicketTester tester;

	@Before
	public void setUp() {
		Injector injector = Guice.createInjector(new AbstractModule() {
			@Override
			protected void configure() {
				bind(Key.get(String.class, Names.named("hello"))).toInstance("world!");
			}
		});
		tester = new WicketTester(new WicketApplication(injector));
	}

	@Test
	public void homepageRendersSuccessfully() {
		tester.startPage(HomePage.class);
		tester.assertLabel("hello", "world!");
		tester.assertRenderedPage(HomePage.class);
	}
}

WicketApplication.java

public class WicketApplication extends WebApplication {
	private final Injector injector;

	@Inject
	public WicketApplication(Injector injector) {
		this.injector = injector;
	}

	@Override
	public Class<HomePage> getHomePage() {
		return HomePage.class;
	}

	@Override
	public void init() {
		super.init();
		getComponentInstantiationListeners().add(new GuiceComponentInjector(this, injector));
	}
}