Prevents tests that use Elasticsearch from polluting the filesystem

By default, Elasticsearch writes it data to ./data. This led to data
being left on the filesystem after a mvn clean which could cause
failures when moving between branches that use different versions of
Elasticsearch.

This commit updates the tests for the Elasticsearch sample and
the Elasticsearch auto-configuration classes to write the
Elasticsearch data and logs into the target directory.

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/elasticsearch/ElasticsearchRepositoriesAutoConfigurationTests.java

@@ -27,6 +27,7 @@
 import org.springframework.boot.autoconfigure.data.empty.EmptyDataPackage;
 import org.springframework.boot.autoconfigure.elasticsearch.ElasticsearchAutoConfiguration;
 import org.springframework.boot.autoconfigure.elasticsearch.ElasticsearchDataAutoConfiguration;
+import org.springframework.boot.test.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
@@ -50,6 +51,9 @@ public void close() {
 	@Test
 	public void testDefaultRepositoryConfiguration() throws Exception {
 		this.context = new AnnotationConfigApplicationContext();
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.data.elasticsearch.properties.path.data:target/data",
+				"spring.data.elasticsearch.properties.path.logs:target/logs");
 		this.context.register(TestConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,
@@ -63,6 +67,9 @@ public void testDefaultRepositoryConfiguration() throws Exception {
 	@Test
 	public void testNoRepositoryConfiguration() throws Exception {
 		this.context = new AnnotationConfigApplicationContext();
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.data.elasticsearch.properties.path.data:target/data",
+				"spring.data.elasticsearch.properties.path.logs:target/logs");
 		this.context.register(EmptyConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,
@@ -75,6 +82,9 @@ public void testNoRepositoryConfiguration() throws Exception {
 	@Test
 	public void doesNotTriggerDefaultRepositoryDetectionIfCustomized() {
 		this.context = new AnnotationConfigApplicationContext();
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.data.elasticsearch.properties.path.data:target/data",
+				"spring.data.elasticsearch.properties.path.logs:target/logs");
 		this.context.register(CustomizedConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchRepositoriesAutoConfiguration.class,

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchAutoConfigurationTests.java

@@ -56,7 +56,9 @@ public void close() {
 	public void createNodeClient() {
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context,
-				"spring.data.elasticsearch.properties.foo.bar:baz");
+				"spring.data.elasticsearch.properties.foo.bar:baz",
+				"spring.data.elasticsearch.properties.path.data:target/data",
+				"spring.data.elasticsearch.properties.path.logs:target/logs");
 		this.context.register(PropertyPlaceholderAutoConfiguration.class,
 				ElasticsearchAutoConfiguration.class);
 		this.context.refresh();
@@ -72,7 +74,9 @@ public void createTransportClient() throws Exception {
 		// a port and check the exception
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context,
-				"spring.data.elasticsearch.cluster-nodes:localhost");
+				"spring.data.elasticsearch.cluster-nodes:localhost",
+				"spring.data.elasticsearch.properties.path.data:target/data",
+				"spring.data.elasticsearch.properties.path.logs:target/logs");
 		this.context.register(PropertyPlaceholderAutoConfiguration.class,
 				ElasticsearchAutoConfiguration.class);
 		this.thrown.expect(BeanCreationException.class);

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchDataAutoConfigurationTests.java

@@ -19,6 +19,7 @@
 import org.junit.After;
 import org.junit.Test;
 import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
+import org.springframework.boot.test.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
 
@@ -42,10 +43,14 @@ public void close() {
 
 	@Test
 	public void templateExists() {
-		this.context = new AnnotationConfigApplicationContext(
-				PropertyPlaceholderAutoConfiguration.class,
+		this.context = new AnnotationConfigApplicationContext();
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.data.elasticsearch.properties.path.data:target/data",
+				"spring.data.elasticsearch.properties.path.logs:target/logs");
+		this.context.register(PropertyPlaceholderAutoConfiguration.class,
 				ElasticsearchAutoConfiguration.class,
 				ElasticsearchDataAutoConfiguration.class);
+		this.context.refresh();
 		assertEquals(1,
 				this.context.getBeanNamesForType(ElasticsearchTemplate.class).length);
 	}

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

@@ -20,6 +20,7 @@
 
 import org.junit.Rule;
 import org.junit.Test;
+import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.boot.test.OutputCapture;
 import org.springframework.core.NestedCheckedException;
 
@@ -38,7 +39,11 @@ public class SampleElasticsearchApplicationTests {
 	@Test
 	public void testDefaultSettings() throws Exception {
 		try {
-			SampleElasticsearchApplication.main(new String[0]);
+			new SpringApplicationBuilder(SampleElasticsearchApplication.class)
+					.properties(
+							"spring.data.elasticsearch.properties.path.data:target/data",
+							"spring.data.elasticsearch.properties.path.logs:target/logs")
+					.run();
 		}
 		catch (IllegalStateException ex) {
 			if (serverNotRunning(ex)) {