/*
* Copyright 2002-2015 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.web.servlet.mvc.method.annotation;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.springframework.http.MediaType;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.springframework.web.servlet.mvc.method.annotation.SseEmitter.event;
/**
* Unit tests for {@link org.springframework.web.servlet.mvc.method.annotation.SseEmitter}.
* @author Rossen Stoyanchev
*/
public class SseEmitterTests {
private SseEmitter emitter;
private TestHandler handler;
@Before
public void setup() throws IOException {
this.handler = new TestHandler();
this.emitter = new SseEmitter();
this.emitter.initialize(this.handler);
}
@Test
public void send() throws Exception {
this.emitter.send("foo");
this.handler.assertSentObjectCount(3);
this.handler.assertObject(0, "data:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(1, "foo");
this.handler.assertObject(2, "\n\n", SseEmitter.TEXT_PLAIN);
}
@Test
public void sendWithMediaType() throws Exception {
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.handler.assertSentObjectCount(3);
this.handler.assertObject(0, "data:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(1, "foo", MediaType.TEXT_PLAIN);
this.handler.assertObject(2, "\n\n", SseEmitter.TEXT_PLAIN);
}
@Test
public void sendEventEmpty() throws Exception {
this.emitter.send(event());
this.handler.assertSentObjectCount(0);
}
@Test
public void sendEventWithDataLine() throws Exception {
this.emitter.send(event().data("foo"));
this.handler.assertSentObjectCount(3);
this.handler.assertObject(0, "data:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(1, "foo");
this.handler.assertObject(2, "\n\n", SseEmitter.TEXT_PLAIN);
}
@Test
public void sendEventWithTwoDataLines() throws Exception {
this.emitter.send(event().data("foo").data("bar"));
this.handler.assertSentObjectCount(5);
this.handler.assertObject(0, "data:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(1, "foo");
this.handler.assertObject(2, "\ndata:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(3, "bar");
this.handler.assertObject(4, "\n\n", SseEmitter.TEXT_PLAIN);
}
@Test
public void sendEventFull() throws Exception {
this.emitter.send(event().comment("blah").name("test").reconnectTime(5000L).id("1").data("foo"));
this.handler.assertSentObjectCount(3);
this.handler.assertObject(0, ":blah\nevent:test\nretry:5000\nid:1\ndata:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(1, "foo");
this.handler.assertObject(2, "\n\n", SseEmitter.TEXT_PLAIN);
}
@Test
public void sendEventFullWithTwoDataLinesInTheMiddle() throws Exception {
this.emitter.send(event().comment("blah").data("foo").data("bar").name("test").reconnectTime(5000L).id("1"));
this.handler.assertSentObjectCount(5);
this.handler.assertObject(0, ":blah\ndata:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(1, "foo");
this.handler.assertObject(2, "\ndata:", SseEmitter.TEXT_PLAIN);
this.handler.assertObject(3, "bar");
this.handler.assertObject(4, "\nevent:test\nretry:5000\nid:1\n\n", SseEmitter.TEXT_PLAIN);
}
private static class TestHandler implements ResponseBodyEmitter.Handler {
private List<Object> objects = new ArrayList<>();
private List<MediaType> mediaTypes = new ArrayList<>();
public void assertSentObjectCount(int size) {
assertEquals(size, this.objects.size());
}
public void assertObject(int index, Object object) {
assertObject(index, object, null);
}
public void assertObject(int index, Object object, MediaType mediaType) {
assertTrue(index <= this.objects.size());
assertEquals(object, this.objects.get(index));
assertEquals(mediaType, this.mediaTypes.get(index));
}
@Override
public void send(Object data, MediaType mediaType) throws IOException {
this.objects.add(data);
this.mediaTypes.add(mediaType);
}
@Override
public void complete() {
}
@Override
public void completeWithError(Throwable failure) {
}
@Override
public void onTimeout(Runnable callback) {
}
@Override
public void onCompletion(Runnable callback) {
}
}
}