1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*******************************************************************************
* Copyright (c) 2009, 2015 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.internal.flow;
import static org.junit.Assert.assertEquals;
import org.junit.Before;
import org.junit.Test;
/**
* Unit tests for {@link Instruction}.
*/
public class InstructionTest {
private Instruction instruction;
@Before
public void setup() {
instruction = new Instruction(123);
}
@Test
public void testInit() {
assertEquals(123, instruction.getLine());
assertEquals(0, instruction.getBranches());
assertEquals(0, instruction.getCoveredBranches());
}
@Test
public void testAddBranch() {
instruction.addBranch();
assertEquals(1, instruction.getBranches());
instruction.addBranch();
assertEquals(2, instruction.getBranches());
instruction.addBranch();
assertEquals(3, instruction.getBranches());
assertEquals(0, instruction.getCoveredBranches());
}
@Test
public void testSetPredecessor() {
final Instruction predecessor = new Instruction(122);
instruction.setPredecessor(predecessor);
assertEquals(1, predecessor.getBranches());
}
@Test
public void testSetCovered() {
final Instruction predecessor = new Instruction(122);
instruction.setPredecessor(predecessor);
instruction.setCovered();
assertEquals(1, instruction.getCoveredBranches());
assertEquals(1, predecessor.getCoveredBranches());
instruction.setCovered();
assertEquals(2, instruction.getCoveredBranches());
assertEquals(1, predecessor.getCoveredBranches());
}
@Test
public void testSetCoveredOnLongSequence() {
final Instruction first = new Instruction(0);
Instruction next = first;
for (int i = 0; i < 0x10000; i++) {
final Instruction insn = new Instruction(i);
insn.setPredecessor(next);
next = insn;
}
// The implementation must not cause an StackOverflowError even on very
// long sequences:
next.setCovered();
assertEquals(1, first.getCoveredBranches());
}
}
|
