OPENJPA-2662 add a test to reproduce Serp bug under Java9

git-svn-id: https://svn.apache.org/repos/asf/openjpa/branches/fb-3.0-asm@1760922 13f79535-47bb-0310-9956-ffa450edef68

openjpa-kernel/src/test/java/org/apache/openjpa/serp/SerpBcTEst.java

@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.openjpa.serp;
+
+import java.io.InputStream;
+
+import org.junit.Assert;
+import org.junit.Test;
+import serp.bytecode.BCClass;
+import serp.bytecode.Project;
+
+/**
+ * Test for reproducing the Serp bug with loading some classes under Java9
+ */
+public class SerpBcTEst {
+
+    @Test
+    public void testBcGetInterfaceNames() {
+        Project project = new Project();
+
+        InputStream in = DummyClass.class.getClassLoader()
+                .getResourceAsStream("org/apache/openjpa/serp/SerpBcTEst$DummyClass.class");
+        BCClass bcClass = project.loadClass(in);
+
+        String [] interfaces = bcClass.getInterfaceNames();
+        Assert.assertNotNull(interfaces);
+    }
+
+    static class DummyClass {
+    }
+}