Switch to junit 5 platform for hibernate-enhance-maven-plugin module

tooling/hibernate-enhance-maven-plugin/hibernate-enhance-maven-plugin.gradle

@@ -106,6 +106,6 @@ processResources.doLast {
 }
 
 processResources.dependsOn processPluginXml
-// Use the "old" junit platform for this module as the JUnit platform will do nested class loading
+// We need this filter here, otherwise Gradle or the JUnit Jupiter platform will load classes at a point
-// which is interfering with the enhancement test, as classes are loaded before enhancement
+// when they are not yet enhanced, leading to test failures
-test.useJUnit()
+test.include '**/*Test.class'

tooling/hibernate-enhance-maven-plugin/src/test/java/org/hibernate/orm/tooling/maven/ChildEntity.java

@@ -0,0 +1,10 @@
+package org.hibernate.orm.tooling.maven;
+
+import javax.persistence.MappedSuperclass;
+
+@MappedSuperclass
+public class ChildEntity extends ParentEntity {
+
+	String childValue;
+
+}

tooling/hibernate-enhance-maven-plugin/src/test/java/org/hibernate/orm/tooling/maven/MavenEnhancePluginTest.java

@@ -13,9 +13,6 @@ import org.junit.Assert;
 import org.junit.Test;
 import org.sonatype.plexus.build.incremental.DefaultBuildContext;
 
-import javax.persistence.Entity;
-import javax.persistence.Id;
-import javax.persistence.MappedSuperclass;
 import java.io.File;
 import java.lang.reflect.Field;
 import java.net.URL;
@@ -79,30 +76,4 @@ public class MavenEnhancePluginTest {
         return false;
     }
 
-    // --- //
-
-    @MappedSuperclass
-    public static class ParentEntity {
-
-        String parentValue;
-
-    }
-
-    @MappedSuperclass
-    public static class ChildEntity extends ParentEntity {
-
-        String childValue;
-
-    }
-
-    @Entity
-    public static class TestEntity extends ChildEntity {
-
-        @Id
-        long id;
-
-        String testValue;
-
-    }
-
 }

tooling/hibernate-enhance-maven-plugin/src/test/java/org/hibernate/orm/tooling/maven/ParentEntity.java

@@ -0,0 +1,10 @@
+package org.hibernate.orm.tooling.maven;
+
+import javax.persistence.MappedSuperclass;
+
+@MappedSuperclass
+public class ParentEntity {
+
+	String parentValue;
+
+}

tooling/hibernate-enhance-maven-plugin/src/test/java/org/hibernate/orm/tooling/maven/TestEntity.java

@@ -0,0 +1,14 @@
+package org.hibernate.orm.tooling.maven;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+@Entity
+public class TestEntity extends ChildEntity {
+
+	@Id
+	long id;
+
+	String testValue;
+
+}