Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

guice/src/test/java/com/baeldung/examples/GuiceUnitTest.java

@@ -0,0 +1,61 @@
+package com.baeldung.examples;
+
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.Test;
+
+import com.baeldung.examples.common.BookService;
+import com.baeldung.examples.guice.FooProcessor;
+import com.baeldung.examples.guice.GuicePersonService;
+import com.baeldung.examples.guice.GuiceUserService;
+import com.baeldung.examples.guice.Person;
+import com.baeldung.examples.guice.modules.GuiceModule;
+import com.google.inject.Guice;
+import com.google.inject.Injector;
+
+public class GuiceUnitTest {
+
+	@Test
+	public void givenAccountServiceInjectedInGuiceUserService_WhenGetAccountServiceInvoked_ThenReturnValueIsNotNull() {
+		Injector injector = Guice.createInjector(new GuiceModule());
+		GuiceUserService guiceUserService = injector.getInstance(GuiceUserService.class);
+		assertNotNull(guiceUserService.getAccountService());
+	}
+
+	@Test
+	public void givenBookServiceIsRegisteredInModule_WhenBookServiceIsInjected_ThenReturnValueIsNotNull() {
+		Injector injector = Guice.createInjector(new GuiceModule());
+		BookService bookService = injector.getInstance(BookService.class);
+		assertNotNull(bookService);
+	}
+
+	@Test
+	public void givenMultipleBindingsForPerson_WhenPersonIsInjected_ThenTestFailsByProvisionException() {
+		Injector injector = Guice.createInjector(new GuiceModule());
+		Person person = injector.getInstance(Person.class);
+		assertNotNull(person);
+	}
+
+	@Test
+	public void givenFooInjectedToFooProcessorAsOptionalDependency_WhenFooProcessorIsRetrievedFromContext_ThenCreationExceptionIsNotThrown() {
+		Injector injector = Guice.createInjector(new GuiceModule());
+		FooProcessor fooProcessor = injector.getInstance(FooProcessor.class);
+		assertNotNull(fooProcessor);
+	}
+
+	@Test
+	public void givenGuicePersonServiceConstructorAnnotatedByInject_WhenGuicePersonServiceIsInjected_ThenInstanceWillBeCreatedFromTheConstructor() {
+		Injector injector = Guice.createInjector(new GuiceModule());
+		GuicePersonService personService = injector.getInstance(GuicePersonService.class);
+		assertNotNull(personService);
+	}
+
+	@Test
+	public void givenPersonDaoInjectedToGuicePersonServiceBySetterInjection_WhenGuicePersonServiceIsInjected_ThenPersonDaoInitializedByTheSetter() {
+		Injector injector = Guice.createInjector(new GuiceModule());
+		GuicePersonService personService = injector.getInstance(GuicePersonService.class);
+		assertNotNull(personService);
+		assertNotNull(personService.getPersonDao());
+	}
+
+}