Move "Testcontainers" How-to

See gh-26262

spring-boot-project/spring-boot-docs/src/docs/asciidoc/anchor-rewrite.properties

@@ -2849,7 +2849,7 @@ howto.jedis-instead-of-lettuce
 
 # 2 ==  Use Testcontainers for integration testing
 howto-testcontainers=\
-howto.testcontainers
+howto.testing.testcontainers
 
 
 

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto.adoc

@@ -50,5 +50,3 @@ include::howto/build.adoc[]
 include::howto/traditional-deployment.adoc[]
 
 include::howto/jedis-instead-of-lettuce.adoc[]
-
-include::howto/testcontainers.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/howto/testcontainers.adoc

@@ -1,23 +0,0 @@
-[[howto.testcontainers]]
-==  Use Testcontainers for integration testing
-The https://www.testcontainers.org/[Testcontainers] library provides a way to manage services running inside Docker containers.
-It integrates with JUnit, allowing you to write a test class that can start up a container before any of the tests run.
-Testcontainers is especially useful for writing integration tests that talk to a real backend service such as MySQL, MongoDB, Cassandra etc.
-Testcontainers can be used in a Spring Boot test as follows:
-
-[source,java,indent=0,subs="verbatim"]
-----
-include::{docs-java}/howto/testcontainers/vanilla/MyIntegrationTests.java[]
-----
-
-This will start up a docker container running Neo4j (if Docker is running locally) before any of the tests are run.
-In most cases, you will need to configure the application using details from the running container, such as container IP or port.
-
-This can be done with a static `@DynamicPropertySource` method that allows adding dynamic property values to the Spring Environment.
-
-[source,java,indent=0,subs="verbatim"]
-----
-include::{docs-java}/howto/testcontainers/dynamicproperties/MyIntegrationTests.java[]
-----
-
-The above configuration allows Neo4j-related beans in the application to communicate with Neo4j running inside the Testcontainers-managed Docker container.

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

@@ -18,3 +18,30 @@ include::{docs-java}/howto/testing/withspringsecurity/MySecurityTests.java[]
 Spring Security provides comprehensive integration with Spring MVC Test and this can also be used when testing controllers using the `@WebMvcTest` slice and `MockMvc`.
 
 For additional details on Spring Security's testing support, refer to Spring Security's {spring-security-docs}#test[reference documentation]).
+
+
+
+
+[[howto.testing.testcontainers]]
+===  Use Testcontainers for Integration Testing
+The https://www.testcontainers.org/[Testcontainers] library provides a way to manage services running inside Docker containers.
+It integrates with JUnit, allowing you to write a test class that can start up a container before any of the tests run.
+Testcontainers is especially useful for writing integration tests that talk to a real backend service such as MySQL, MongoDB, Cassandra etc.
+Testcontainers can be used in a Spring Boot test as follows:
+
+[source,java,indent=0,subs="verbatim"]
+----
+include::{docs-java}/howto/testing/testcontainers/vanilla/MyIntegrationTests.java[]
+----
+
+This will start up a docker container running Neo4j (if Docker is running locally) before any of the tests are run.
+In most cases, you will need to configure the application using details from the running container, such as container IP or port.
+
+This can be done with a static `@DynamicPropertySource` method that allows adding dynamic property values to the Spring Environment.
+
+[source,java,indent=0,subs="verbatim"]
+----
+include::{docs-java}/howto/testing/testcontainers/dynamicproperties/MyIntegrationTests.java[]
+----
+
+The above configuration allows Neo4j-related beans in the application to communicate with Neo4j running inside the Testcontainers-managed Docker container.

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/howto/testing/testcontainers/dynamicproperties/MyIntegrationTests.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.docs.howto.testcontainers.dynamicproperties;
+package org.springframework.boot.docs.howto.testing.testcontainers.dynamicproperties;
 
 import org.junit.jupiter.api.Test;
 import org.testcontainers.containers.Neo4jContainer;

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/howto/testing/testcontainers/vanilla/MyIntegrationTests.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.docs.howto.testcontainers.vanilla;
+package org.springframework.boot.docs.howto.testing.testcontainers.vanilla;
 
 import org.junit.jupiter.api.Test;
 import org.testcontainers.containers.Neo4jContainer;