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      1 /*
      2  * Licensed to the Apache Software Foundation (ASF) under one or more
      3  * contributor license agreements.  See the NOTICE file distributed with
      4  * this work for additional information regarding copyright ownership.
      5  * The ASF licenses this file to You under the Apache License, Version 2.0
      6  * (the "License"); you may not use this file except in compliance with
      7  * the License.  You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  */
     18 package org.apache.bcel.generic;
     19 
     20 import org.junit.Assert;
     21 import org.junit.Test;
     22 
     23 public class InstructionHandleTestCase {
     24 
     25     // Test that setInstruction only allows Instructions that are not BranchInstructions
     26 
     27     @Test(expected=ClassGenException.class)
     28     public void testsetInstructionNull() {
     29         final InstructionHandle ih = InstructionHandle.getInstructionHandle(new NOP());// have to start with a valid non BI
     30         Assert.assertNotNull(ih);
     31         ih.setInstruction(null);
     32         Assert.assertNotNull(ih);
     33     }
     34 
     35     @Test
     36     public void testsetInstructionI() {
     37         final InstructionHandle ih = InstructionHandle.getInstructionHandle(new NOP());// have to start with a valid non BI
     38         Assert.assertNotNull(ih);
     39         ih.setInstruction(new NOP());
     40         Assert.assertNotNull(ih);
     41     }
     42 
     43     @Test(expected=ClassGenException.class)
     44     public void testsetInstructionnotI() {
     45         final InstructionHandle ih = InstructionHandle.getInstructionHandle(new NOP());// have to start with a valid non BI
     46         Assert.assertNotNull(ih);
     47         ih.setInstruction(new GOTO(null));
     48         Assert.assertNotNull(ih);
     49     }
     50 
     51     @Test(expected=ClassGenException.class)
     52     public void testGetIHnull() {
     53         InstructionHandle.getInstructionHandle(null);
     54     }
     55 
     56     @Test
     57     public void testBCEL195() {
     58         final InstructionList il = new InstructionList();
     59         final InstructionHandle ih = il.append(InstructionConst.NOP);
     60         new TABLESWITCH(new int[0], new InstructionHandle[0], ih);
     61         new TABLESWITCH(new int[0], new InstructionHandle[0], ih);
     62     }
     63 }
     64