/*
* Copyright 2002-2017 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 org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.http.MediaType;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
/**
* Unit tests for {@link ResponseBodyEmitter}.
*
* @author Rossen Stoyanchev
* @author Tomasz Nurkiewicz
*/
public class ResponseBodyEmitterTests {
private ResponseBodyEmitter emitter;
@Mock
private ResponseBodyEmitter.Handler handler;
@Before
public void setup() {
MockitoAnnotations.initMocks(this);
this.emitter = new ResponseBodyEmitter();
}
@Test
public void sendBeforeHandlerInitialized() throws Exception {
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.emitter.send("bar", MediaType.TEXT_PLAIN);
this.emitter.complete();
verifyNoMoreInteractions(this.handler);
this.emitter.initialize(this.handler);
verify(this.handler).send("foo", MediaType.TEXT_PLAIN);
verify(this.handler).send("bar", MediaType.TEXT_PLAIN);
verify(this.handler).complete();
verifyNoMoreInteractions(this.handler);
}
@Test
public void sendDuplicateBeforeHandlerInitialized() throws Exception {
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.emitter.complete();
verifyNoMoreInteractions(this.handler);
this.emitter.initialize(this.handler);
verify(this.handler, times(2)).send("foo", MediaType.TEXT_PLAIN);
verify(this.handler).complete();
verifyNoMoreInteractions(this.handler);
}
@Test
public void sendBeforeHandlerInitializedWithError() throws Exception {
IllegalStateException ex = new IllegalStateException();
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.emitter.send("bar", MediaType.TEXT_PLAIN);
this.emitter.completeWithError(ex);
verifyNoMoreInteractions(this.handler);
this.emitter.initialize(this.handler);
verify(this.handler).send("foo", MediaType.TEXT_PLAIN);
verify(this.handler).send("bar", MediaType.TEXT_PLAIN);
verify(this.handler).completeWithError(ex);
verifyNoMoreInteractions(this.handler);
}
@Test(expected = IllegalStateException.class)
public void sendFailsAfterComplete() throws Exception {
this.emitter.complete();
this.emitter.send("foo");
}
@Test
public void sendAfterHandlerInitialized() throws Exception {
this.emitter.initialize(this.handler);
verify(this.handler).onTimeout(any());
verify(this.handler).onCompletion(any());
verifyNoMoreInteractions(this.handler);
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.emitter.send("bar", MediaType.TEXT_PLAIN);
this.emitter.complete();
verify(this.handler).send("foo", MediaType.TEXT_PLAIN);
verify(this.handler).send("bar", MediaType.TEXT_PLAIN);
verify(this.handler).complete();
verifyNoMoreInteractions(this.handler);
}
@Test
public void sendAfterHandlerInitializedWithError() throws Exception {
this.emitter.initialize(this.handler);
verify(this.handler).onTimeout(any());
verify(this.handler).onCompletion(any());
verifyNoMoreInteractions(this.handler);
IllegalStateException ex = new IllegalStateException();
this.emitter.send("foo", MediaType.TEXT_PLAIN);
this.emitter.send("bar", MediaType.TEXT_PLAIN);
this.emitter.completeWithError(ex);
verify(this.handler).send("foo", MediaType.TEXT_PLAIN);
verify(this.handler).send("bar", MediaType.TEXT_PLAIN);
verify(this.handler).completeWithError(ex);
verifyNoMoreInteractions(this.handler);
}
@Test
public void sendWithError() throws Exception {
this.emitter.initialize(this.handler);
verify(this.handler).onTimeout(any());
verify(this.handler).onCompletion(any());
verifyNoMoreInteractions(this.handler);
IOException failure = new IOException();
doThrow(failure).when(this.handler).send("foo", MediaType.TEXT_PLAIN);
try {
this.emitter.send("foo", MediaType.TEXT_PLAIN);
fail("Expected exception");
}
catch (IOException ex) {
// expected
}
verify(this.handler).send("foo", MediaType.TEXT_PLAIN);
verify(this.handler).completeWithError(failure);
verifyNoMoreInteractions(this.handler);
}
@Test
public void onTimeoutBeforeHandlerInitialized() throws Exception {
Runnable runnable = mock(Runnable.class);
this.emitter.onTimeout(runnable);
this.emitter.initialize(this.handler);
ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
verify(this.handler).onTimeout(captor.capture());
verify(this.handler).onCompletion(any());
assertNotNull(captor.getValue());
captor.getValue().run();
verify(runnable).run();
}
@Test
public void onTimeoutAfterHandlerInitialized() throws Exception {
this.emitter.initialize(this.handler);
ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
verify(this.handler).onTimeout(captor.capture());
verify(this.handler).onCompletion(any());
Runnable runnable = mock(Runnable.class);
this.emitter.onTimeout(runnable);
assertNotNull(captor.getValue());
captor.getValue().run();
verify(runnable).run();
}
@Test
public void onCompletionBeforeHandlerInitialized() throws Exception {
Runnable runnable = mock(Runnable.class);
this.emitter.onCompletion(runnable);
this.emitter.initialize(this.handler);
ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
verify(this.handler).onTimeout(any());
verify(this.handler).onCompletion(captor.capture());
assertNotNull(captor.getValue());
captor.getValue().run();
verify(runnable).run();
}
@Test
public void onCompletionAfterHandlerInitialized() throws Exception {
this.emitter.initialize(this.handler);
ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
verify(this.handler).onTimeout(any());
verify(this.handler).onCompletion(captor.capture());
Runnable runnable = mock(Runnable.class);
this.emitter.onCompletion(runnable);
assertNotNull(captor.getValue());
captor.getValue().run();
verify(runnable).run();
}
}