SpringModuleMetadataTests.java

/*
 * Copyright 2013-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package org.springframework.guice.module;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import javax.inject.Inject;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.type.filter.AnnotationTypeFilter;
import org.springframework.core.type.filter.AssignableTypeFilter;
import org.springframework.guice.module.GuiceModuleMetadata;
import org.springframework.guice.module.SpringModule;

import com.google.inject.ConfigurationException;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.ProvisionException;

/**
 * @author Dave Syer
 *
 */
public class SpringModuleMetadataTests {

	@Rule
	public ExpectedException expected = ExpectedException.none();

	@Test
	public void twoConfigClasses() throws Exception {
		Injector injector = createInjector(TestConfig.class, OtherConfig.class);
		assertNotNull(injector.getInstance(Service.class));
	}

	@Test
	public void twoServices() throws Exception {
		Injector injector = createInjector(TestConfig.class, MoreConfig.class);
		expected.expect(ProvisionException.class);
		assertNotNull(injector.getInstance(Service.class));
	}

	@Test
	public void twoServicesOnePrimary() throws Exception {
		Injector injector = createInjector(TestConfig.class, PrimaryConfig.class);
		assertNotNull(injector.getInstance(Service.class));
	}

	@Test
	public void includes() throws Exception {
		Injector injector = createInjector(TestConfig.class, MetadataIncludesConfig.class);
		expected.expect(ConfigurationException.class);
		assertNull(injector.getBinding(Service.class));
	}

	@Test
	public void excludes() throws Exception {
		Injector injector = createInjector(TestConfig.class, MetadataExcludesConfig.class);
		expected.expect(ConfigurationException.class);
		assertNull(injector.getInstance(Service.class));
	}

	private Injector createInjector(Class<?>... config) {
		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
		context.register(config);
		context.refresh();
		Injector injector = Guice.createInjector(new SpringModule(context));
		return injector;
	}

	interface Service {
	}

	protected static class MyService implements Service {
	}

	public static class Foo {

		@Inject
		public Foo(Service service) {
		}

	}

	@Configuration
	protected static class MetadataExcludesConfig {
		@Bean
		public GuiceModuleMetadata guiceModuleMetadata() {
			GuiceModuleMetadata metadata = new GuiceModuleMetadata();
			metadata.exclude(new AssignableTypeFilter(Service.class));
			return metadata;
		}
	}

	@Configuration
	protected static class MetadataIncludesConfig {
		@Bean
		public GuiceModuleMetadata guiceModuleMetadata() {
			GuiceModuleMetadata metadata = new GuiceModuleMetadata();
			metadata.include(new AnnotationTypeFilter(Cacheable.class));
			return metadata;
		}
	}

	@Configuration
	public static class TestConfig {
		@Bean
		public Service service() {
			return new MyService();
		}
	}

	@Configuration
	public static class PrimaryConfig {
		@Bean
		@Primary
		public Service primary() {
			return new MyService();
		}
	}

	@Configuration
	public static class MoreConfig {
		@Bean
		public Service more() {
			return new MyService();
		}
	}

	@Configuration
	public static class OtherConfig {
	}

}