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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   https://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.bcel.util;
21  
22  import static org.junit.jupiter.api.Assertions.assertEquals;
23  
24  import java.util.Iterator;
25  
26  import org.apache.bcel.AbstractTest;
27  import org.apache.bcel.generic.IADD;
28  import org.apache.bcel.generic.ILOAD;
29  import org.apache.bcel.generic.ISTORE;
30  import org.apache.bcel.generic.InstructionHandle;
31  import org.apache.bcel.generic.InstructionList;
32  import org.junit.jupiter.api.Test;
33  
34  class InstructionFinderTest extends AbstractTest {
35  
36      @Test
37      void testSearch() {
38          final InstructionList il = new InstructionList();
39          il.append(new ILOAD(1));
40          il.append(new ILOAD(2));
41          il.append(new IADD());
42          il.append(new ISTORE(3));
43          final InstructionFinder finder = new InstructionFinder(il);
44  
45          final Iterator<?> it = finder.search("ILOAD IADD", il.getInstructionHandles()[0], null);
46          final InstructionHandle[] ihs = (InstructionHandle[]) it.next();
47          assertEquals(2, ihs.length);
48          assertEquals(ihs[0].getInstruction(), new ILOAD(2));
49          assertEquals(ihs[1].getInstruction(), new IADD());
50      }
51  }