View Javadoc
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  package org.apache.bcel.generic;
18  
19  import static org.junit.jupiter.api.Assertions.assertNotNull;
20  import static org.junit.jupiter.api.Assertions.assertThrows;
21  
22  import org.junit.jupiter.api.Test;
23  
24  public class InstructionHandleTestCase {
25  
26      // Test that setInstruction only allows Instructions that are not BranchInstructions
27  
28      @Test
29      public void testBCEL195() {
30          final InstructionList il = new InstructionList();
31          final InstructionHandle ih = il.append(InstructionConst.NOP);
32          new TABLESWITCH(new int[0], InstructionHandle.EMPTY_ARRAY, ih);
33          new TABLESWITCH(new int[0], InstructionHandle.EMPTY_ARRAY, ih);
34      }
35  
36      @Test
37      public void testGetIHnull() {
38          assertThrows(ClassGenException.class, () -> InstructionHandle.getInstructionHandle(null));
39      }
40  
41      @Test
42      public void testsetInstructionI() {
43          final InstructionHandle ih = InstructionHandle.getInstructionHandle(new NOP());// have to start with a valid non BI
44          assertNotNull(ih);
45          ih.setInstruction(new NOP());
46          assertNotNull(ih);
47      }
48  
49      @Test
50      public void testsetInstructionnotI() {
51          final InstructionHandle ih = InstructionHandle.getInstructionHandle(new NOP());// have to start with a valid non BI
52          assertNotNull(ih);
53          assertThrows(ClassGenException.class, () -> ih.setInstruction(new GOTO(null)));
54      }
55  
56      @Test
57      public void testsetInstructionNull() {
58          final InstructionHandle ih = InstructionHandle.getInstructionHandle(new NOP());// have to start with a valid non BI
59          assertNotNull(ih);
60          assertThrows(ClassGenException.class, () -> ih.setInstruction(null));
61      }
62  }