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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*******************************************************************************
* Copyright (c) 2009, 2019 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.runtime;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import org.jacoco.core.internal.instr.InstrSupport;
import org.jacoco.core.test.TargetLoader;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.commons.GeneratorAdapter;
import org.objectweb.asm.commons.Method;
/**
* Abstract test base for {@link IRuntime} implementations.
*/
public abstract class RuntimeTestBase {
private RuntimeData data;
private IRuntime runtime;
private TestStorage storage;
abstract IRuntime createRuntime();
@Before
public void setup() throws Exception {
data = new RuntimeData();
runtime = createRuntime();
runtime.startup(data);
storage = new TestStorage();
}
@After
public void shutdown() {
runtime.shutdown();
}
@Test
public void testDataAccessor() throws InstantiationException,
IllegalAccessException {
ITarget t = generateAndInstantiateClass(1234);
data.collect(storage, storage, false);
storage.assertData(1234, t.get());
}
@Test
public void testNoLocalVariablesInDataAccessor()
throws InstantiationException, IllegalAccessException {
runtime.generateDataAccessor(1001, "Target", 5, new MethodVisitor(
InstrSupport.ASM_API_VERSION) {
@Override
public void visitVarInsn(int opcode, int var) {
fail("No usage of local variables allowed.");
}
});
}
@Test
public void testExecutionRecording() throws InstantiationException,
IllegalAccessException {
generateAndInstantiateClass(1001).a();
data.collect(storage, storage, false);
storage.assertSize(1);
final boolean[] data = storage.getData(1001).getProbes();
assertTrue(data[0]);
assertFalse(data[1]);
}
@Test
public void testLoadSameClassTwice() throws InstantiationException,
IllegalAccessException {
generateAndInstantiateClass(1001).a();
generateAndInstantiateClass(1001).b();
data.collect(storage, storage, false);
storage.assertSize(1);
final boolean[] data = storage.getData(1001).getProbes();
assertTrue(data[0]);
assertTrue(data[1]);
}
/**
* Creates a new class with the given id, loads this class and instantiates
* it. The constructor of the generated class will request the probe array
* from the runtime under test.
*/
private ITarget generateAndInstantiateClass(int classid)
throws InstantiationException, IllegalAccessException {
final String className = "org/jacoco/test/targets/RuntimeTestTarget_"
+ classid;
Type classType = Type.getObjectType(className);
final ClassWriter writer = new ClassWriter(0);
writer.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, className, null,
"java/lang/Object",
new String[] { Type.getInternalName(ITarget.class) });
writer.visitField(InstrSupport.DATAFIELD_ACC,
InstrSupport.DATAFIELD_NAME, InstrSupport.DATAFIELD_DESC, null,
null);
// Constructor
GeneratorAdapter gen = new GeneratorAdapter(writer.visitMethod(
Opcodes.ACC_PUBLIC, "<init>", "()V", null, new String[0]),
Opcodes.ACC_PUBLIC, "<init>", "()V");
gen.visitCode();
gen.loadThis();
gen.invokeConstructor(Type.getType(Object.class), new Method("<init>",
"()V"));
gen.loadThis();
final int size = runtime.generateDataAccessor(classid, className, 2,
gen);
gen.putStatic(classType, InstrSupport.DATAFIELD_NAME,
Type.getObjectType(InstrSupport.DATAFIELD_DESC));
gen.returnValue();
gen.visitMaxs(size + 1, 0);
gen.visitEnd();
// get()
gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC,
"get", "()[Z", null, new String[0]), Opcodes.ACC_PUBLIC, "get",
"()[Z");
gen.visitCode();
gen.getStatic(classType, InstrSupport.DATAFIELD_NAME,
Type.getObjectType(InstrSupport.DATAFIELD_DESC));
gen.returnValue();
gen.visitMaxs(1, 0);
gen.visitEnd();
// a()
gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "a",
"()V", null, new String[0]), Opcodes.ACC_PUBLIC, "a", "()V");
gen.visitCode();
gen.getStatic(classType, InstrSupport.DATAFIELD_NAME,
Type.getObjectType(InstrSupport.DATAFIELD_DESC));
gen.push(0);
gen.push(1);
gen.arrayStore(Type.BOOLEAN_TYPE);
gen.returnValue();
gen.visitMaxs(3, 0);
gen.visitEnd();
// b()
gen = new GeneratorAdapter(writer.visitMethod(Opcodes.ACC_PUBLIC, "b",
"()V", null, new String[0]), Opcodes.ACC_PUBLIC, "b", "()V");
gen.visitCode();
gen.getStatic(classType, InstrSupport.DATAFIELD_NAME,
Type.getObjectType(InstrSupport.DATAFIELD_DESC));
gen.push(1);
gen.push(1);
gen.arrayStore(Type.BOOLEAN_TYPE);
gen.returnValue();
gen.visitMaxs(3, 0);
gen.visitEnd();
writer.visitEnd();
final TargetLoader loader = new TargetLoader();
return (ITarget) loader.add(className.replace('/', '.'),
writer.toByteArray()).newInstance();
}
/**
* With this interface we modify and read coverage data of the generated
* class.
*/
public interface ITarget {
/**
* Returns a reference to the probe array.
*
* @return the probe array
*/
boolean[] get();
/**
* The implementation will mark probe 0 as executed
*/
void a();
/**
* The implementation will mark probe 1 as executed
*/
void b();
}
}
|
