nats.client.spring.JavaConfigAnnotationConfigTest.java Source code

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Here is the source code for nats.client.spring.JavaConfigAnnotationConfigTest.java

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/*
 *   Copyright (c) 2013 Intellectual Reserve, Inc.  All rights reserved.
 *
 *   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 nats.client.spring;

import nats.client.Message;
import nats.client.MockNats;
import nats.client.Nats;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.testng.annotations.Test;

import java.util.ArrayList;
import java.util.List;

import static org.testng.Assert.*;

/**
 * @author Mike Heath <elcapo@gmail.com>
 */
public class JavaConfigAnnotationConfigTest {

    @Test
    public void subscribeAnnotation() {
        final AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
                AnnotationConfig.class);
        try {
            final Nats nats = context.getBean(Nats.class);
            testNatsConfig(context, nats);
        } finally {
            context.close();
        }
    }

    private static final String NATS_BEAN = "natsBean";
    private static final String WRONG_NATS_BEAN = "wrongNatsBean";

    @Test
    public void subscribeAnnotationNamedNatsBean() {
        final AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(
                NamedNatsAnnotationConfig.class);
        try {
            final Nats nats = context.getBean(NATS_BEAN, Nats.class);
            final Nats wrongNats = context.getBean(WRONG_NATS_BEAN, Nats.class);
            wrongNats.publish("test", "Should not get processed");
            testNatsConfig(context, nats);
        } finally {
            context.close();
        }
    }

    private void testNatsConfig(AnnotationConfigApplicationContext context, Nats nats) {
        assertNotNull(nats);

        final String body = "Java config is cool.";
        nats.publish("test", body);

        final SubscribeBean subscribeBean = context.getBean(SubscribeBean.class);

        assertEquals(subscribeBean.messages.size(), 1);
        assertEquals(body, subscribeBean.messages.get(0).getBodyAsString());
    }

    @Configuration
    @EnableNatsAnnotations
    public static class AnnotationConfig {

        public @Bean Nats nats() {
            return new MockNats();
        }

        public @Bean SubscribeBean subscribeBean() {
            return new SubscribeBean();
        }

    }

    @Configuration
    @EnableNatsAnnotations(NATS_BEAN)
    public static class NamedNatsAnnotationConfig {

        public @Bean(name = NATS_BEAN) Nats nats() {
            return new MockNats();
        }

        public @Bean(name = WRONG_NATS_BEAN) Nats wrongNats() {
            return new MockNats();
        }

        public @Bean SubscribeBean subscribeBean() {
            return new SubscribeBean();
        }

    }

    public static class SubscribeBean {
        List<Message> messages = new ArrayList<>();

        @Subscribe("test")
        public void onMessage(Message message) {
            messages.add(message);
        }
    }
}