Polish

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/MongoProperties.java

@@ -18,7 +18,7 @@ package org.springframework.boot.autoconfigure.mongo;
 
 import java.net.UnknownHostException;
 import java.util.ArrayList;
-import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 import com.mongodb.MongoClient;
@@ -209,7 +209,7 @@ public class MongoProperties {
 				}
 				String host = this.host == null ? "localhost" : this.host;
 				int port = determinePort(environment);
-				return new MongoClient(Arrays.asList(new ServerAddress(host, port)),
+				return new MongoClient(Collections.singletonList(new ServerAddress(host, port)),
 						credentials, options);
 			}
 			// The options and credentials are in the URI

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mongo/MongoAutoConfigurationTests.java

@@ -57,7 +57,6 @@ public class MongoAutoConfigurationTests {
 		assertThat(this.context.getBeanNamesForType(Mongo.class).length).isEqualTo(1);
 	}
 
-	@SuppressWarnings("deprecation")
 	@Test
 	public void optionsAdded() {
 		this.context = new AnnotationConfigApplicationContext();
@@ -66,11 +65,10 @@ public class MongoAutoConfigurationTests {
 		this.context.register(OptionsConfig.class,
 				PropertyPlaceholderAutoConfiguration.class, MongoAutoConfiguration.class);
 		this.context.refresh();
-		assertThat(this.context.getBean(Mongo.class).getMongoOptions().getSocketTimeout())
-				.isEqualTo(300);
+		assertThat(this.context.getBean(MongoClient.class).getMongoClientOptions()
+				.getSocketTimeout()).isEqualTo(300);
 	}
 
-	@SuppressWarnings("deprecation")
 	@Test
 	public void optionsAddedButNoHost() {
 		this.context = new AnnotationConfigApplicationContext();
@@ -79,8 +77,8 @@ public class MongoAutoConfigurationTests {
 		this.context.register(OptionsConfig.class,
 				PropertyPlaceholderAutoConfiguration.class, MongoAutoConfiguration.class);
 		this.context.refresh();
-		assertThat(this.context.getBean(Mongo.class).getMongoOptions().getSocketTimeout())
-				.isEqualTo(300);
+		assertThat(this.context.getBean(MongoClient.class).getMongoClientOptions()
+				.getSocketTimeout()).isEqualTo(300);
 	}
 
 	@Test