Registering Guice Modules via GroovyEmbeddedApp

EmbeddedSpec.groovy

package ratpack.groovy

import com.google.inject.AbstractModule
import ratpack.groovy.test.embed.GroovyEmbeddedApp
import ratpack.guice.Guice
import spock.lang.Specification

class EmbeddedSpec extends Specification {
  def "GroovyEmbeddedApp with Guice Module"() {
    given:
    def app = GroovyEmbeddedApp.of {
      registry(Guice.registry{ spec ->
        spec.module new AbstractModule() {
          @Override
          protected void configure() {
            bind(String).toInstance("World")
          }
        }
      })

      handlers {
        all { String s ->
          render("Hello, $s!" as String)
        }
      }
    }

    expect:
    app.test { client ->
      assert client.text == 'Hello, World!'
    }
  }
}