Add support for Elasticsearch

Add auto-configuration and starters for Elasticsearch.

Fixes gh-408

spring-boot-samples/spring-boot-sample-data-elasticsearch/src/test/java/sample/data/elasticsearch/SampleElasticsearchApplicationTests.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2012-2014 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.data.elasticsearch;
+
+import static org.junit.Assert.*;
+
+import java.net.ConnectException;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.springframework.boot.test.OutputCapture;
+import org.springframework.core.NestedCheckedException;
+
+/**
+ * Tests for {@link SampleElasticsearchApplication}.
+ *
+ * @author Artur Konczak
+ */
+public class SampleElasticsearchApplicationTests {
+
+	@Rule
+	public OutputCapture outputCapture = new OutputCapture();
+
+	@Test
+	public void testDefaultSettings() throws Exception {
+		try {
+			SampleElasticsearchApplication.main(new String[0]);
+		}
+		catch (IllegalStateException ex) {
+			if (serverNotRunning(ex)) {
+				return;
+			}
+		}
+		String output = this.outputCapture.toString();
+		assertTrue("Wrong output: " + output,
+				output.contains("firstName='Alice', lastName='Smith'"));
+	}
+
+	private boolean serverNotRunning(IllegalStateException ex) {
+		@SuppressWarnings("serial")
+		NestedCheckedException nested = new NestedCheckedException("failed", ex) {
+		};
+		if (nested.contains(ConnectException.class)) {
+			Throwable root = nested.getRootCause();
+			if (root.getMessage().contains("Connection refused")) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+}