Introduce dedicated 'cache' subpackage in the TCF

Since the ContextCache is now a published SPI, it and its collaborators
have been moved to a dedicated 'org.sfw.test.context.cache' subpackage.

Issue: SPR-12683

spring-test/src/main/java/org/springframework/test/context/BootstrapUtils.java

@@ -40,7 +40,7 @@ abstract class BootstrapUtils {
 
 	private static final String DEFAULT_BOOTSTRAP_CONTEXT_CLASS_NAME = "org.springframework.test.context.support.DefaultBootstrapContext";
 
-	private static final String DEFAULT_CACHE_AWARE_CONTEXT_LOADER_DELEGATE_CLASS_NAME = "org.springframework.test.context.support.DefaultCacheAwareContextLoaderDelegate";
+	private static final String DEFAULT_CACHE_AWARE_CONTEXT_LOADER_DELEGATE_CLASS_NAME = "org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate";
 
 	private static final String DEFAULT_TEST_CONTEXT_BOOTSTRAPPER_CLASS_NAME = "org.springframework.test.context.support.DefaultTestContextBootstrapper";
 
@@ -55,7 +55,7 @@ abstract class BootstrapUtils {
 	 * Create the {@code BootstrapContext} for the specified {@linkplain Class test class}.
 	 *
 	 * <p>Uses reflection to create a {@link org.springframework.test.context.support.DefaultBootstrapContext}
-	 * that uses a {@link org.springframework.test.context.support.DefaultCacheAwareContextLoaderDelegate}.
+	 * that uses a {@link org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate}.
 	 *
 	 * @param testClass the test class for which the bootstrap context should be created
 	 * @return a new {@code BootstrapContext}; never {@code null}

spring-test/src/main/java/org/springframework/test/context/CacheAwareContextLoaderDelegate.java

@@ -23,8 +23,9 @@ import org.springframework.test.annotation.DirtiesContext.HierarchyMode;
 /**
  * A {@code CacheAwareContextLoaderDelegate} is responsible for {@linkplain
  * #loadContext loading} and {@linkplain #closeContext closing} application
- * contexts, interacting transparently with a {@link ContextCache} behind
- * the scenes.
+ * contexts, interacting transparently with a
+ * {@link org.springframework.test.context.cache.ContextCache ContextCache}
+ * behind the scenes.
  *
  * <p>Note: {@code CacheAwareContextLoaderDelegate} does not extend the
  * {@link ContextLoader} or {@link SmartContextLoader} interface.
@@ -41,7 +42,7 @@ public interface CacheAwareContextLoaderDelegate {
 	 * <p>If the context is present in the {@code ContextCache} it will simply
 	 * be returned; otherwise, it will be loaded, stored in the cache, and returned.
 	 * <p>The cache statistics should be logged by invoking
-	 * {@link ContextCache#logStatistics()}.
+	 * {@link org.springframework.test.context.cache.ContextCache#logStatistics()}.
 	 * @param mergedContextConfiguration the merged context configuration to use
 	 * to load the application context; never {@code null}
 	 * @return the application context

spring-test/src/main/java/org/springframework/test/context/cache/ContextCache.java

@@ -14,10 +14,11 @@
  * limitations under the License.
  */
 
-package org.springframework.test.context;
+package org.springframework.test.context.cache;
 
 import org.springframework.context.ApplicationContext;
 import org.springframework.test.annotation.DirtiesContext.HierarchyMode;
+import org.springframework.test.context.MergedContextConfiguration;
 
 /**
  * {@code ContextCache} defines the SPI for caching Spring

spring-test/src/main/java/org/springframework/test/context/cache/DefaultCacheAwareContextLoaderDelegate.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.test.context.support;
+package org.springframework.test.context.cache;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -22,7 +22,6 @@ import org.apache.commons.logging.LogFactory;
 import org.springframework.context.ApplicationContext;
 import org.springframework.test.annotation.DirtiesContext.HierarchyMode;
 import org.springframework.test.context.CacheAwareContextLoaderDelegate;
-import org.springframework.test.context.ContextCache;
 import org.springframework.test.context.ContextLoader;
 import org.springframework.test.context.MergedContextConfiguration;
 import org.springframework.test.context.SmartContextLoader;

spring-test/src/main/java/org/springframework/test/context/cache/DefaultContextCache.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package org.springframework.test.context.support;
+package org.springframework.test.context.cache;
 
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -31,7 +31,6 @@ import org.springframework.context.ApplicationContext;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.core.style.ToStringCreator;
 import org.springframework.test.annotation.DirtiesContext.HierarchyMode;
-import org.springframework.test.context.ContextCache;
 import org.springframework.test.context.MergedContextConfiguration;
 import org.springframework.util.Assert;
 

spring-test/src/main/java/org/springframework/test/context/support/AbstractTestContextBootstrapper.java

@@ -38,7 +38,6 @@ import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.core.io.support.SpringFactoriesLoader;
 import org.springframework.test.context.BootstrapContext;
 import org.springframework.test.context.CacheAwareContextLoaderDelegate;
-import org.springframework.test.context.ContextCache;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.ContextConfigurationAttributes;
 import org.springframework.test.context.ContextHierarchy;
@@ -68,8 +67,9 @@ import org.springframework.util.StringUtils;
  * <li>{@link #processMergedContextConfiguration}
  * </ul>
  *
- * <p>To plug in custom {@link ContextCache} support, override
- * {@link #getCacheAwareContextLoaderDelegate()}.
+ * <p>To plug in custom
+ * {@link org.springframework.test.context.cache.ContextCache ContextCache}
+ * support, override {@link #getCacheAwareContextLoaderDelegate()}.
  *
  * @author Sam Brannen
  * @author Juergen Hoeller
@@ -481,8 +481,9 @@ public abstract class AbstractTestContextBootstrapper implements TestContextBoot
 	 * <p>The default implementation simply delegates to
 	 * {@code getBootstrapContext().getCacheAwareContextLoaderDelegate()}.
 	 * <p>Concrete subclasses may choose to override this method to return a
-	 * custom {@code CacheAwareContextLoaderDelegate} implementation with
-	 * custom {@link ContextCache} support.
+	 * custom {@code CacheAwareContextLoaderDelegate} implementation with custom
+	 * {@link org.springframework.test.context.cache.ContextCache ContextCache}
+	 * support.
 	 * @return the context loader delegate (never {@code null})
 	 */
 	protected CacheAwareContextLoaderDelegate getCacheAwareContextLoaderDelegate() {