Spring Boot Web app HTTP tests example spring-boot-samples/spring-boot-sample-web-secure/src/test/java/sample/ops/ui/SampleSecureApplicationTests.java in https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples/spring-boot-sample-web-secure

SampleSecureApplicationTests.java

/*
 * Copyright 2012-2013 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 sample.ops.ui;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.util.Arrays;
import java.util.concurrent.Callable;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.boot.SpringApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.web.client.DefaultResponseErrorHandler;
import org.springframework.web.client.RestTemplate;

/**
 * Basic integration tests for demo application.
 * 
 * @author Dave Syer
 */
public class SampleSecureApplicationTests {

	private static ConfigurableApplicationContext context;

	@BeforeClass
	public static void start() throws Exception {
		Future<ConfigurableApplicationContext> future = Executors
				.newSingleThreadExecutor().submit(
						new Callable<ConfigurableApplicationContext>() {
							@Override
							public ConfigurableApplicationContext call() throws Exception {
								return SpringApplication
										.run(SampleSecureApplication.class);
							}
						});
		context = future.get(60, TimeUnit.SECONDS);
	}

	@AfterClass
	public static void stop() {
		if (context != null) {
			context.close();
		}
	}

	@Test
	public void testHome() throws Exception {
		HttpHeaders headers = new HttpHeaders();
		headers.setAccept(Arrays.asList(MediaType.TEXT_HTML));
		ResponseEntity<String> entity = getRestTemplate().exchange(
				"http://localhost:8080", HttpMethod.GET, new HttpEntity<Void>(headers),
				String.class);
		assertEquals(HttpStatus.OK, entity.getStatusCode());
		assertTrue("Wrong body (title doesn't match):\n" + entity.getBody(), entity
				.getBody().contains("<title>Login"));
	}

	@Test
	public void testCss() throws Exception {
		ResponseEntity<String> entity = getRestTemplate().getForEntity(
				"http://localhost:8080/css/bootstrap.min.css", String.class);
		assertEquals(HttpStatus.OK, entity.getStatusCode());
		assertTrue("Wrong body:\n" + entity.getBody(), entity.getBody().contains("body"));
	}

	private RestTemplate getRestTemplate() {
		RestTemplate restTemplate = new RestTemplate();
		restTemplate.setErrorHandler(new DefaultResponseErrorHandler() {
			@Override
			public void handleError(ClientHttpResponse response) throws IOException {
			}
		});
		return restTemplate;

	}

}