/*
    * 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
    *
   *   https://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.bcel;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.util.Iterator;
  
  import org.apache.bcel.classfile.JavaClass;
  import org.apache.bcel.classfile.Method;
  import org.apache.bcel.generic.InstructionHandle;
  import org.apache.bcel.generic.InstructionList;
  import org.apache.bcel.util.InstructionFinder;
  import org.junit.jupiter.api.Test;
  
  class InstructionFinderTest extends AbstractTest {
      @Test
      void testSearchAll() throws Exception {
          final JavaClass clazz = getTestJavaClass(PACKAGE_BASE_NAME + ".util.InstructionFinder");
          final Method[] methods = clazz.getMethods();
          Method searchM = null;
          for (final Method m : methods) {
              if (m.getName().equals("search") && m.getArgumentTypes().length == 3) {
                  searchM = m;
                  break;
              }
          }
  
          if (searchM == null) {
              throw new Exception("search method not found");
          }
  
          final byte[] bytes = searchM.getCode().getCode();
          final InstructionList il = new InstructionList(bytes);
          final InstructionFinder finder = new InstructionFinder(il);
          final Iterator<?> it = finder.search(".*", il.getStart(), null);
  
          final InstructionHandle[] ihs = (InstructionHandle[]) it.next();
          int size = 0;
          for (final InstructionHandle ih : ihs) {
              size += ih.getInstruction().getLength();
          }
          assertEquals(bytes.length, size);
  
      }
  }