Skip test failing on Java 1.9 using Gradle

documentation/documentation.gradle

@@ -120,6 +120,17 @@ dependencies {
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
+if ( JavaVersion.current().isJava9Compatible() ) {
+	logger.warn( '[WARN] Skipping Javassist-related tests for hibernate-core due to Javassist JDK 9 incompatibility' )
+
+	// we need to exclude tests using Javassist enhancement, which does not properly support
+	// Java 9 yet - https://issues.jboss.org/browse/JASSIST-261
+	test {
+		// rather than wild-cards, keep an explicit list
+		exclude 'org/hibernate/userguide/fetching/LazyBasicAttributeTest.class'
+	}
+}
+
 processTestResources.doLast( {
 	copy {
 		from( sourceSets.test.java.srcDirs ) {

documentation/src/test/java/org/hibernate/userguide/fetching/LazyBasicAttributeTest.java

@@ -16,7 +16,6 @@ import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
 import org.hibernate.userguide.model.Image;
 
 import org.hibernate.testing.RequiresDialect;
-import org.hibernate.testing.Skip;
 import org.hibernate.test.util.jdbc.PreparedStatementSpyConnectionProvider;
 import org.junit.Test;
 
@@ -61,7 +60,6 @@ public class LazyBasicAttributeTest extends BaseEntityManagerFunctionalTestCase
 	}
 
 	@Test
-	@Skip(condition = Skip.JdkVersion._1_9.class, message = "On Java 1.9, bytecode enhancement does not work on pre-release!")
 	public void test() {
 		doInJPA( this::entityManagerFactory, entityManager -> {
 			Image image = new Image();

hibernate-testing/src/main/java/org/hibernate/testing/Skip.java

@@ -60,12 +60,4 @@ public @interface Skip {
 			}
 		}
 	}
-	interface JdkVersion {
-		class _1_9 implements Matcher {
-			@Override
-			public boolean isMatch() {
-				return System.getProperty("java.version").toLowerCase().startsWith( "1.9" );
-			}
-		}
-	}
 }