Polish "Add auto-configuration support for ReactiveGridFsTemplate"

Closes gh-16467

Author: snicoll

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/mongo/MongoReactiveDataAutoConfiguration.java

@@ -91,7 +91,7 @@ public MappingMongoConverter mappingMongoConverter(MongoMappingContext context,
 
 	@Bean
 	@ConditionalOnMissingBean
-	public DataBufferFactory dataBufferFactory() {
+	public DefaultDataBufferFactory dataBufferFactory() {
 		return new DefaultDataBufferFactory();
 	}
 

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/mongo/MongoReactiveDataAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2018 the original author or authors.
+ * Copyright 2012-2019 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.
@@ -47,6 +47,12 @@ public void templateExists() {
 				.hasSingleBean(ReactiveMongoTemplate.class));
 	}
 
+	@Test
+	public void gridFsTemplateExists() {
+		this.contextRunner.run((context) -> assertThat(context)
+				.hasSingleBean(ReactiveGridFsTemplate.class));
+	}
+
 	@Test
 	public void backsOffIfMongoClientBeanIsNotPresent() {
 		ApplicationContextRunner runner = new ApplicationContextRunner()
@@ -57,10 +63,4 @@ public void backsOffIfMongoClientBeanIsNotPresent() {
 				.doesNotHaveBean(MongoReactiveDataAutoConfiguration.class));
 	}
 
-	@Test
-	public void gridFsTemplateExists() {
-		this.contextRunner.run((context) -> assertThat(context)
-				.hasSingleBean(ReactiveGridFsTemplate.class));
-	}
-
 }