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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