Perhaps I missed something, but I believe all you need is:
injector.injectMembers(this);
in your test class right after acquiring the injector instance (before
the commented template = injector.getInstance(...) line). This will
fullfil the injection requests in the test itself. I use a base test
class that does the equivalent for injecting loggers, Sessions, etc..,
so there shouldn't be a ton of boilerplate.
On Mar 2, 3:40 pm, infinity2heaven <[email protected]> wrote:
> New to guice.
>
> public interface Template {
> foo();
>
> }
>
> public class SomeTemplate implements Template {
> @Inject
> public SomeTemplate (Session session){
> this.session = session;
> }
>
> public foo() {
> // do something
> }
>
> }
>
> // Module with bindings
> public class TemplateModule extends AbstractModule {
>
> @Override
> protected void configure() {
> bind(Session.class).toInstance(session);
> bind(Template.class).to(SomeTemplate.class);
> }
>
> public static class Builder {
> private Session session;
>
> public TemplateModule buildModule() {
> return new TemplateModule(session);
> }
>
> public Builder withSession(String session) {
> this.session = session;
> return this;
> }
> }
>
> }
>
> // JUnt 4.4 test
> public class TemplateTest {
>
> @Inject
> Template template; // doesn't inject!
>
> @BeforeClass
> public static void init() throws Exception {
> injector = Guice.createInjector(new
> TemplateModule.Builder().withSession(new Session()));
> // template= injector.getInstance(Template.class); //
> template is
> initialized if this is uncommented
> }
>
> @Test
> public void testFoo() {
> template.foo(); // NullPointerException
> }
>
> }
>
> What is wrong with the above code? Why doesn't @Inject automatically
> inject the template instance variable? It seems redundant (and
> limited) that I have to yet again use Injector.getInstance, each time
> I need to access the template object. I'm sure doing something wrong
> here ...
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