/*
* Copyright 2013-2016 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.cloud.netflix.rx;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.springframework.http.MediaType.APPLICATION_JSON_UTF8;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import rx.Observable;
import rx.Single;
import rx.functions.Func1;
/**
* Tests the demonstrate using {@link Observable} with {@link SingleReturnValueHandler} class.
*
* @author Spencer Gibb
* @author Jakub Narloch
*/
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = ObservableReturnValueHandlerTest.Application.class, webEnvironment = WebEnvironment.RANDOM_PORT)
@DirtiesContext
public class ObservableReturnValueHandlerTest {
@Value("${local.server.port}")
private int port = 0;
private TestRestTemplate restTemplate = new TestRestTemplate();
@Configuration
@EnableAutoConfiguration
@RestController
protected static class Application {
// tag::rx_observable[]
@RequestMapping(method = RequestMethod.GET, value = "/single")
public Single<String> single() {
return Observable.just("single value").toSingle();
}
@RequestMapping(method = RequestMethod.GET, value = "/multiple")
public Single<List<String>> multiple() {
return Observable.just("multiple", "values").toList().toSingle();
}
@RequestMapping(method = RequestMethod.GET, value = "/responseWithObservable")
public ResponseEntity<Single<String>> responseWithObservable() {
Observable<String> observable = Observable.just("single value");
HttpHeaders headers = new HttpHeaders();
headers.setContentType(APPLICATION_JSON_UTF8);
return new ResponseEntity<>(observable.toSingle(), headers, HttpStatus.CREATED);
}
@RequestMapping(method = RequestMethod.GET, value = "/timeout")
public Observable<String> timeout() {
return Observable.timer(1, TimeUnit.MINUTES).map(new Func1<Long, String>() {
@Override
public String call(Long aLong) {
return "single value";
}
});
}
// end::rx_observable[]
@RequestMapping(method = RequestMethod.GET, value = "/throw")
public Single<Object> error() {
return Observable.error(new RuntimeException("Unexpected")).toSingle();
}
}
@Test
public void shouldRetrieveSingleValue() {
// when
ResponseEntity<String> response = restTemplate.getForEntity(path("/single"), String.class);
// then
assertNotNull(response);
assertEquals(HttpStatus.OK, response.getStatusCode());
assertEquals("single value", response.getBody());
}
@Test
public void shouldRetrieveMultipleValues() {
// when
ResponseEntity<List> response = restTemplate.getForEntity(path("/multiple"), List.class);
// then
assertNotNull(response);
assertEquals(HttpStatus.OK, response.getStatusCode());
assertEquals(Arrays.asList("multiple", "values"), response.getBody());
}
@Test
public void shouldRetrieveSingleValueWithStatusCodeAndCustomHeader() {
// when
ResponseEntity<String> response = restTemplate.getForEntity(path("/responseWithObservable"), String.class);
// then
assertNotNull(response);
assertEquals(HttpStatus.CREATED, response.getStatusCode());
assertEquals(MediaType.APPLICATION_JSON_UTF8, response.getHeaders().getContentType());
assertEquals("single value", response.getBody());
}
@Test
public void shouldRetrieveErrorResponse() {
// when
ResponseEntity<Object> response = restTemplate.getForEntity(path("/throw"), Object.class);
// then
assertNotNull(response);
assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, response.getStatusCode());
}
@Test
@Ignore("adds 30s to build")
public void shouldTimeoutOnConnection() {
// when
ResponseEntity<Object> response = restTemplate.getForEntity(path("/timeout"), Object.class);
// then
assertNotNull(response);
assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, response.getStatusCode());
}
private String path(String context) {
return String.format("http://localhost:%d%s", port, context);
}
}