/*
 * Copyright 2012-2015 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 sample.tomcat;

import java.io.ByteArrayInputStream;
import java.nio.charset.Charset;
import java.util.zip.GZIPInputStream;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.boot.test.TestRestTemplate;
import org.springframework.boot.test.WebIntegrationTest;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
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.util.StreamUtils;
import org.springframework.web.client.RestTemplate;

import static org.junit.Assert.assertEquals;

/**
 * Basic integration tests for demo application.
 *
 * @author Dave Syer
 * @author Andy Wilkinson
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(SampleTomcatApplication.class)
@WebIntegrationTest(randomPort = true)
@DirtiesContext
public class SampleTomcatApplicationTests {

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

	@Test
	public void testHome() throws Exception {
		ResponseEntity<String> entity = new TestRestTemplate().getForEntity(
				"http://localhost:" + this.port, String.class);
		assertEquals(HttpStatus.OK, entity.getStatusCode());
		assertEquals("Hello World", entity.getBody());
	}

	@Test
	public void testCompression() throws Exception {
		HttpHeaders requestHeaders = new HttpHeaders();
		requestHeaders.set("Accept-Encoding", "gzip");
		HttpEntity<?> requestEntity = new HttpEntity<Object>(requestHeaders);
		RestTemplate restTemplate = new TestRestTemplate();
		ResponseEntity<byte[]> entity = restTemplate.exchange("http://localhost:"
				+ this.port, HttpMethod.GET, requestEntity, byte[].class);
		assertEquals(HttpStatus.OK, entity.getStatusCode());
		GZIPInputStream inflater = new GZIPInputStream(new ByteArrayInputStream(
				entity.getBody()));
		try {
			assertEquals("Hello World",
					StreamUtils.copyToString(inflater, Charset.forName("UTF-8")));
		}
		finally {
			inflater.close();
		}
	}

}