io.jmnarloch.spring.boot.rxjava.async.ObservableDeferredResultTest.java Source code

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Here is the source code for io.jmnarloch.spring.boot.rxjava.async.ObservableDeferredResultTest.java

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/**
 * Copyright (c) 2015-2016 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 io.jmnarloch.spring.boot.rxjava.async;

import io.jmnarloch.spring.boot.rxjava.dto.EventDto;
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.IntegrationTest;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.boot.test.TestRestTemplate;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
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.functions.Func1;

import java.util.Arrays;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.springframework.http.MediaType.APPLICATION_JSON_UTF8_VALUE;

/**
 * Tests the {@link ObservableDeferredResult} class.
 *
 * @author Jakub Narloch
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = ObservableDeferredResultTest.Application.class)
@WebAppConfiguration
@IntegrationTest({ "server.port=0" })
@DirtiesContext
public class ObservableDeferredResultTest {

    @Value("${local.server.port}")
    private int port = 0;

    private TestRestTemplate restTemplate = new TestRestTemplate();

    @Configuration
    @EnableAutoConfiguration
    @RestController
    protected static class Application {

        @RequestMapping(method = RequestMethod.GET, value = "/single")
        public ObservableDeferredResult<String> single() {
            return new ObservableDeferredResult<String>(Observable.just("single value"));
        }

        @RequestMapping(method = RequestMethod.GET, value = "/multiple")
        public ObservableDeferredResult<String> multiple() {
            return new ObservableDeferredResult<String>(Observable.just("multiple", "values"));
        }

        @RequestMapping(method = RequestMethod.GET, value = "/event", produces = APPLICATION_JSON_UTF8_VALUE)
        public ObservableDeferredResult<EventDto> event() {
            return new ObservableDeferredResult<EventDto>(
                    Observable.just(new EventDto("Spring.io", new Date()), new EventDto("JavaOne", new Date())));
        }

        @RequestMapping(method = RequestMethod.GET, value = "/throw")
        public ObservableDeferredResult<Object> error() {
            return new ObservableDeferredResult<Object>(Observable.error(new RuntimeException("Unexpected")));
        }

        @RequestMapping(method = RequestMethod.GET, value = "/timeout")
        public ObservableDeferredResult<String> timeout() {
            return new ObservableDeferredResult<String>(
                    Observable.timer(1, TimeUnit.MINUTES).map(new Func1<Long, String>() {
                        @Override
                        public String call(Long aLong) {
                            return "single value";
                        }
                    }));
        }
    }

    @Test
    public void shouldRetrieveSingleValue() {

        // when
        ResponseEntity<List> response = restTemplate.getForEntity(path("/single"), List.class);

        // then
        assertNotNull(response);
        assertEquals(HttpStatus.OK, response.getStatusCode());
        assertEquals(Collections.singletonList("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 shouldRetrieveJsonSerializedListValues() {

        // when
        ResponseEntity<List<EventDto>> response = restTemplate.exchange(path("/event"), HttpMethod.GET, null,
                new ParameterizedTypeReference<List<EventDto>>() {
                });

        // then
        assertNotNull(response);
        assertEquals(HttpStatus.OK, response.getStatusCode());
        assertEquals(2, response.getBody().size());
        assertEquals("JavaOne", response.getBody().get(1).getName());
    }

    @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
    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);
    }
}