在Guice中编写Map注入的单元测试

public interface Service {
    void execute();
}

public class ServiceA implements Service {
    @Override
    public void execute() {
        System.out.println("Service A executed");
    }
}

public class ServiceB implements Service {
    @Override
    public void execute() {
        System.out.println("Service B executed");
    }
}

public class ServiceModule extends AbstractModule {
    @Override
    protected void configure() {
        MapBinder<String, Service> mapBinder = MapBinder.newMapBinder(binder(), String.class, Service.class);
        mapBinder.addBinding("serviceA").to(ServiceA.class);
        mapBinder.addBinding("serviceB").to(ServiceB.class);
    }
}

public class ServiceTest {
    private Injector injector;

    @Before
    public void setup() {
        injector = Guice.createInjector(new ServiceModule());
    }

    @Test
    public void testServiceExecution() {
        Map<String, Service> serviceMap = injector.getInstance(Key.get(new TypeLiteral<Map<String, Service>>() {}));
        Service serviceA = serviceMap.get("serviceA");
        Service serviceB = serviceMap.get("serviceB");

        serviceA.execute();
        serviceB.execute();
    }
}