Add missing package-info file for new test.context.web.socket package

Issue: SPR-14420

spring-test/src/main/java/org/springframework/test/context/web/socket/MockServerContainer.java

@@ -20,7 +20,6 @@ import java.io.IOException;
 import java.net.URI;
 import java.util.Collections;
 import java.util.Set;
-
 import javax.websocket.ClientEndpointConfig;
 import javax.websocket.DeploymentException;
 import javax.websocket.Endpoint;
@@ -30,8 +29,7 @@ import javax.websocket.server.ServerContainer;
 import javax.websocket.server.ServerEndpointConfig;
 
 /**
- * Mock implementation of the {@link javax.websocket.server.ServerContainer}
- * interface.
+ * Mock implementation of the {@link javax.websocket.server.ServerContainer} interface.
  *
  * @author Sam Brannen
  * @since 4.3.1
@@ -107,17 +105,20 @@ class MockServerContainer implements ServerContainer {
 	@Override
 	public Session connectToServer(Endpoint endpointInstance, ClientEndpointConfig cec, URI path)
 			throws DeploymentException, IOException {
+
 		throw new UnsupportedOperationException(
-			"MockServerContainer does not support connectToServer(Endpoint, ClientEndpointConfig, URI)");
+				"MockServerContainer does not support connectToServer(Endpoint, ClientEndpointConfig, URI)");
 	}
 
 	@Override
 	public Session connectToServer(Class<? extends Endpoint> endpointClass, ClientEndpointConfig cec, URI path)
 			throws DeploymentException, IOException {
+
 		throw new UnsupportedOperationException(
-			"MockServerContainer does not support connectToServer(Class, ClientEndpointConfig, URI)");
+				"MockServerContainer does not support connectToServer(Class, ClientEndpointConfig, URI)");
 	}
 
+
 	// --- ServerContainer -----------------------------------------------------
 
 	@Override
@@ -128,7 +129,7 @@ class MockServerContainer implements ServerContainer {
 	@Override
 	public void addEndpoint(ServerEndpointConfig serverConfig) throws DeploymentException {
 		throw new UnsupportedOperationException(
-			"MockServerContainer does not support addEndpoint(ServerEndpointConfig)");
+				"MockServerContainer does not support addEndpoint(ServerEndpointConfig)");
 	}
 
 }

spring-test/src/main/java/org/springframework/test/context/web/socket/MockServerContainerContextCustomizer.java

@@ -40,14 +40,8 @@ class MockServerContainerContextCustomizer implements ContextCustomizer {
 	}
 
 	@Override
-	public boolean equals(Object that) {
-		if (this == that) {
-			return true;
-		}
-		if (that == null || this.getClass() != that.getClass()) {
-			return false;
-		}
-		return true;
+	public boolean equals(Object other) {
+		return (this == other || (other != null && getClass() == other.getClass()));
 	}
 
 	@Override

spring-test/src/main/java/org/springframework/test/context/web/socket/MockServerContainerContextCustomizerFactory.java

@@ -35,15 +35,15 @@ import org.springframework.util.ClassUtils;
  */
 class MockServerContainerContextCustomizerFactory implements ContextCustomizerFactory {
 
-	private static final boolean webSocketPresent = ClassUtils.isPresent("javax.websocket.server.ServerContainer",
-			MockServerContainerContextCustomizerFactory.class.getClassLoader());
-
 	private static final String WEB_APP_CONFIGURATION_ANNOTATION_CLASS_NAME =
 			"org.springframework.test.context.web.WebAppConfiguration";
 
 	private static final String MOCK_SERVER_CONTAINER_CONTEXT_CUSTOMIZER_CLASS_NAME =
 			"org.springframework.test.context.web.socket.MockServerContainerContextCustomizer";
 
+	private static final boolean webSocketPresent = ClassUtils.isPresent("javax.websocket.server.ServerContainer",
+			MockServerContainerContextCustomizerFactory.class.getClassLoader());
+
 
 	@Override
 	public ContextCustomizer createContextCustomizer(Class<?> testClass,
@@ -52,12 +52,12 @@ class MockServerContainerContextCustomizerFactory implements ContextCustomizerFa
 		if (webSocketPresent && isAnnotatedWithWebAppConfiguration(testClass)) {
 			try {
 				Class<?> clazz = ClassUtils.forName(MOCK_SERVER_CONTAINER_CONTEXT_CUSTOMIZER_CLASS_NAME,
-					getClass().getClassLoader());
+						getClass().getClassLoader());
 				return (ContextCustomizer) BeanUtils.instantiateClass(clazz);
 			}
 			catch (Throwable ex) {
-				throw new IllegalStateException("Failed to enable WebSocket test support; could not load class: "
-						+ MOCK_SERVER_CONTAINER_CONTEXT_CUSTOMIZER_CLASS_NAME, ex);
+				throw new IllegalStateException("Failed to enable WebSocket test support; could not load class: " +
+						MOCK_SERVER_CONTAINER_CONTEXT_CUSTOMIZER_CLASS_NAME, ex);
 			}
 		}
 
@@ -66,8 +66,8 @@ class MockServerContainerContextCustomizerFactory implements ContextCustomizerFa
 	}
 
 	private static boolean isAnnotatedWithWebAppConfiguration(Class<?> testClass) {
-		return AnnotatedElementUtils.findMergedAnnotationAttributes(testClass,
-			WEB_APP_CONFIGURATION_ANNOTATION_CLASS_NAME, false, false) != null;
+		return (AnnotatedElementUtils.findMergedAnnotationAttributes(testClass,
+				WEB_APP_CONFIGURATION_ANNOTATION_CLASS_NAME, false, false) != null);
 	}
 
 }

spring-test/src/main/java/org/springframework/test/context/web/socket/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * WebSocket support classes for the <em>Spring TestContext Framework</em>.
+ */
+package org.springframework.test.context.web.socket;