Convert all sample tests to @IntegrationTest where appropriate

Makes them a lot more readable IMO, and also enables @Autowiring
from the context into the test case (sweeet). I added @DirtiesContext
to all of them as well to be on the safe side, but possbly that can be
optimized in some way as well.

spring-boot-samples/spring-boot-sample-web-ui/src/test/java/sample/ui/SampleWebUiApplicationTests.java

@@ -1,62 +1,39 @@
 package sample.ui;
 
-import java.io.IOException;
-import java.net.URI;
-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.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.http.client.ClientHttpResponse;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.DefaultResponseErrorHandler;
-import org.springframework.web.client.RestTemplate;
-
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
+import java.net.URI;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.IntegrationTest;
+import org.springframework.boot.test.RestTemplates;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+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.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+
 /**
  * Basic integration tests for demo application.
  * 
  * @author Dave Syer
  */
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes=SampleWebUiApplication.class)
+@WebAppConfiguration
+@IntegrationTest
+@DirtiesContext
 public class SampleWebUiApplicationTests {
 
-	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(SampleWebUiApplication.class);
-							}
-						});
-		context = future.get(60, TimeUnit.SECONDS);
-	}
-
-	@AfterClass
-	public static void stop() {
-		if (context != null) {
-			context.close();
-		}
-	}
-
 	@Test
 	public void testHome() throws Exception {
-		ResponseEntity<String> entity = getRestTemplate().getForEntity(
+		ResponseEntity<String> entity = RestTemplates.get().getForEntity(
 				"http://localhost:8080", String.class);
 		assertEquals(HttpStatus.OK, entity.getStatusCode());
 		assertTrue("Wrong body (title doesn't match):\n" + entity.getBody(), entity
@@ -70,28 +47,17 @@ public class SampleWebUiApplicationTests {
 		MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
 		map.set("text", "FOO text");
 		map.set("summary", "FOO");
-		URI location = getRestTemplate().postForLocation("http://localhost:8080", map);
+		URI location = RestTemplates.get().postForLocation("http://localhost:8080", map);
 		assertTrue("Wrong location:\n" + location,
 				location.toString().contains("localhost:8080"));
 	}
 
 	@Test
 	public void testCss() throws Exception {
-		ResponseEntity<String> entity = getRestTemplate().getForEntity(
+		ResponseEntity<String> entity = RestTemplates.get().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;
-
-	}
-
 }