test/jdk/java/lang/invoke/DefineClassTest.java

rev 58875 : 8238195: Lookup::defineClass should link the class to match the specification
Reviewed-by: alanb, chegar

*** 1,7 ****
  /*
!  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 235,244 ****
--- 235,249 ----
      @Test(expectedExceptions = { NullPointerException.class })
      public void testNull() throws Exception {
          lookup().defineClass(null);
      }
  
+     @Test(expectedExceptions = { NoClassDefFoundError.class })
+     public void testLinking() throws Exception {
+         lookup().defineClass(generateNonLinkableClass(THIS_PACKAGE + ".NonLinkableClass"));
+     }
+ 
      /**
       * Generates a class file with the given class name
       */
      byte[] generateClass(String className) {
          ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS
*** 334,343 ****
--- 339,373 ----
  
          cw.visitEnd();
          return cw.toByteArray();
      }
  
+     /**
+      * Generates a non-linkable class file with the given class name
+      */
+     byte[] generateNonLinkableClass(String className) {
+         ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS
+                 + ClassWriter.COMPUTE_FRAMES);
+         cw.visit(V14,
+                 ACC_PUBLIC + ACC_SUPER,
+                 className.replace(".", "/"),
+                 null,
+                 "MissingSuperClass",
+                 null);
+ 
+         // <init>
+         MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
+         mv.visitVarInsn(ALOAD, 0);
+         mv.visitMethodInsn(INVOKESPECIAL, "MissingSuperClass", "<init>", "()V", false);
+         mv.visitInsn(RETURN);
+         mv.visitMaxs(0, 0);
+         mv.visitEnd();
+ 
+         cw.visitEnd();
+         return cw.toByteArray();
+     }
+ 
      private int nextNumber() {
          return ++nextNumber;
      }
  
      private int nextNumber;