1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package openjdk.jcov.filter.simplemethods;
  26 
  27 import org.objectweb.asm.ClassReader;
  28 import org.objectweb.asm.tree.ClassNode;
  29 import org.objectweb.asm.tree.MethodNode;
  30 
  31 import java.io.IOException;
  32 
  33 public class TestUtils {
  34     static ClassNode findTestClass(Class cls) throws IOException {
  35         ClassNode result = new ClassNode();
  36         ClassReader reader = new ClassReader(cls.getClassLoader().
  37                 getResourceAsStream(cls.getName().replace('.','/') + ".class"));
  38         reader.accept(result, 0);
  39         return result;
  40     }
  41 
  42     static MethodNode findTestMethod(ClassNode cls, String methodSig)  {
  43         for(Object mo: cls.methods) {
  44             MethodNode m = (MethodNode) mo;
  45             if((m.name + m.desc).equals(methodSig)) {
  46                 return m;
  47             }
  48         }
  49         throw new IllegalStateException("Method does not exist: " + methodSig + " in class " + cls.name);
  50     }
  51 }