Replace `@EnableBatchProcessing` in slice test examples

Using `@EnableBatchProcessing` is no longer necessary to enable
Batch's auto-configuration so it's no longer a good example when
discussing sliced tests and user configuration.

This commit replaces `@EnableBatchProcessing` with an alternative
annotation, `@EnableMongoAuditing` and updates the accompanying
text.

Closes gh-33435

spring-boot-project/spring-boot-docs/src/docs/asciidoc/features/testing.adoc

@@ -855,15 +855,15 @@ If you <<using#using.structuring-your-code, structure your code>> in a sensible
 
 It then becomes important not to litter the application's main class with configuration settings that are specific to a particular area of its functionality.
 
-Assume that you are using Spring Batch and you rely on the auto-configuration for it.
+Assume that you are using Spring Data MongoDB, you rely on the auto-configuration for it, and you have enabled auditing.
 You could define your `@SpringBootApplication` as follows:
 
 include::code:MyApplication[]
 
-Because this class is the source configuration for the test, any slice test actually tries to start Spring Batch, which is definitely not what you want to do.
+Because this class is the source configuration for the test, any slice test actually tries to enable Mongo auditing, which is definitely not what you want to do.
 A recommended approach is to move that area-specific configuration to a separate `@Configuration` class at the same level as your application, as shown in the following example:
 
-include::code:MyBatchConfiguration[]
+include::code:MyMongoConfiguration[]
 
 NOTE: Depending on the complexity of your application, you may either have a single `@Configuration` class for your customizations or one class per domain area.
 The latter approach lets you enable it in one of your tests, if necessary, with the `@Import` annotation.

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/features/testing/springbootapplications/userconfigurationandslicing/MyApplication.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2023 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.
@@ -16,11 +16,11 @@
 
 package org.springframework.boot.docs.features.testing.springbootapplications.userconfigurationandslicing;
 
-import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.mongodb.config.EnableMongoAuditing;
 
 @SpringBootApplication
-@EnableBatchProcessing
+@EnableMongoAuditing
 public class MyApplication {
 
 	// ...

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/features/testing/springbootapplications/userconfigurationandslicing/MyMongoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2023 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.
@@ -16,12 +16,12 @@
 
 package org.springframework.boot.docs.features.testing.springbootapplications.userconfigurationandslicing;
 
-import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.data.mongodb.config.EnableMongoAuditing;
 
 @Configuration(proxyBeanMethods = false)
-@EnableBatchProcessing
+@EnableMongoAuditing
-public class MyBatchConfiguration {
+public class MyMongoConfiguration {
 
 	// ...
 

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/testing/springbootapplications/userconfigurationandslicing/MyApplication.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 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.
@@ -16,11 +16,11 @@
 
 package org.springframework.boot.docs.features.testing.springbootapplications.userconfigurationandslicing
 
-import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing
 import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.data.mongodb.config.EnableMongoAuditing
 
 @SpringBootApplication
-@EnableBatchProcessing
+@EnableMongoAuditing
 class MyApplication {
 
 	// ...

spring-boot-project/spring-boot-docs/src/main/kotlin/org/springframework/boot/docs/features/testing/springbootapplications/userconfigurationandslicing/MyMongoConfiguration.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 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.
@@ -16,12 +16,12 @@
 
 package org.springframework.boot.docs.features.testing.springbootapplications.userconfigurationandslicing
 
-import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing
 import org.springframework.context.annotation.Configuration
+import org.springframework.data.mongodb.config.EnableMongoAuditing;
 
 @Configuration(proxyBeanMethods = false)
-@EnableBatchProcessing
+@EnableMongoAuditing
-class MyBatchConfiguration {
+class MyMongoConfiguration {
 
 	// ...