public final class BindingsImposition
extends Object
implements Imposition

An imposition of additional and overridden Guice bindings, used by Guice.registry(Action) and similar methods.

This is typically used to override bindings at test time.

 import ratpack.core.server.RatpackServer;
 import ratpack.guice.BindingsImposition;
 import ratpack.guice.Guice;
 import ratpack.core.impose.ImpositionsSpec;
 import ratpack.test.MainClassApplicationUnderTest;

 import static org.junit.jupiter.api.Assertions.assertEquals;

 public class Example {

   public static class App {
     public static void main(String[] args) throws Exception {
       RatpackServer.start(s -> s
         .registry(Guice.registry(r ->
           r.bindInstance(String.class, "foo")
         ))
         .handlers(c -> c
           .get(ctx -> ctx.render(ctx.get(String.class)))
         )
       );
     }
   }

   public static void main(String[] args) throws Exception {
     new MainClassApplicationUnderTest(App.class) {
       @Override
       protected void addImpositions(ImpositionsSpec impositions) {
         impositions.add(BindingsImposition.of(r ->
           r.bindInstance(String.class, "bar")
         ));
       }
     }.test(testHttpClient ->
       assertEquals("bar", testHttpClient.getText())
     );
   }
 }