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/*******************************************************************************
* Copyright (c) 2009, 2014 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.instr;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import org.jacoco.core.runtime.IExecutionDataAccessorGenerator;
import org.jacoco.core.runtime.OfflineInstrumentationAccessGenerator;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
/**
* Unit tests for {@link ProbeArrayStrategyFactory} and the
* {@link IProbeArrayStrategy} implementations. The verifies the behaviour of
* the returned {@link IProbeArrayStrategy} instances for different classes.
*/
public class ProbeArrayStrategyFactoryTest {
private IExecutionDataAccessorGenerator generator;
private ClassVisitorMock cv;
@Before
public void setup() {
generator = new OfflineInstrumentationAccessGenerator();
cv = new ClassVisitorMock();
}
@Test
public void testClass1() {
test(Opcodes.V1_1, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(false);
}
@Test
public void testClass2() {
test(Opcodes.V1_2, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(false);
}
@Test
public void testClass3() {
test(Opcodes.V1_3, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(false);
}
@Test
public void testClass4() {
test(Opcodes.V1_4, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(false);
}
@Test
public void testClass5() {
test(Opcodes.V1_5, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(false);
}
@Test
public void testClass6() {
test(Opcodes.V1_6, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(true);
}
@Test
public void testClass7() {
test(Opcodes.V1_7, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(true);
}
@Test
public void testClass8() {
test(Opcodes.V1_8, 0, false, true);
assertDataField(InstrSupport.DATAFIELD_ACC);
assertInitMethod(true);
}
@Test
public void testInterface7() {
test(Opcodes.V1_7, Opcodes.ACC_INTERFACE, true, false);
assertNoDataField();
assertNoInitMethod();
}
@Test
public void testEmptyInterface7() {
test(Opcodes.V1_7, Opcodes.ACC_INTERFACE, false, false);
assertNoDataField();
assertNoInitMethod();
}
@Test(expected = UnsupportedOperationException.class)
public void testEmptyInterface7StoreInstance() {
IProbeArrayStrategy strategy = test(Opcodes.V1_7,
Opcodes.ACC_INTERFACE, false, false);
strategy.storeInstance(null, 0);
}
@Test
public void testInterface8() {
test(Opcodes.V1_8, Opcodes.ACC_INTERFACE, false, true);
assertDataField(InstrSupport.DATAFIELD_INTF_ACC);
assertInitMethod(true);
}
@Test
public void testEmptyInterface8() {
test(Opcodes.V1_8, Opcodes.ACC_INTERFACE, false, false);
assertNoDataField();
assertNoInitMethod();
}
@Test
public void testClinitInterface8() {
test(Opcodes.V1_8, Opcodes.ACC_INTERFACE, true, false);
assertNoDataField();
assertNoInitMethod();
}
private IProbeArrayStrategy test(int version, int access, boolean clinit,
boolean method) {
ClassWriter writer = new ClassWriter(0);
writer.visit(version, access, "Foo", "java/lang/Object", null, null);
if (clinit) {
MethodVisitor mv = writer.visitMethod(Opcodes.ACC_PUBLIC
| Opcodes.ACC_STATIC, "<clinit>", "()V", null, null);
mv.visitCode();
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
if (method) {
MethodVisitor mv = writer.visitMethod(Opcodes.ACC_PUBLIC
| Opcodes.ACC_STATIC, "doit", "()V", null, null);
mv.visitCode();
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
writer.visitEnd();
final IProbeArrayStrategy strategy = ProbeArrayStrategyFactory
.createFor(new ClassReader(writer.toByteArray()), generator);
strategy.addMembers(cv, 123);
return strategy;
}
private static class ClassVisitorMock extends ClassVisitor {
private int fieldAccess;
private String fieldName;
private int methodAccess;
private String methodName;
private boolean frames;
ClassVisitorMock() {
super(Opcodes.ASM5);
}
@Override
public FieldVisitor visitField(int access, String name, String desc,
String signature, Object value) {
assertNull(fieldName);
fieldAccess = access;
fieldName = name;
return null;
}
@Override
public MethodVisitor visitMethod(int access, String name, String desc,
String signature, String[] exceptions) {
assertNull(methodName);
methodAccess = access;
methodName = name;
return new MethodVisitor(Opcodes.ASM5) {
@Override
public void visitFrame(int type, int nLocal, Object[] local,
int nStack, Object[] stack) {
frames = true;
}
};
}
}
void assertDataField(int access) {
assertEquals(InstrSupport.DATAFIELD_NAME, cv.fieldName);
assertEquals(access, cv.fieldAccess);
}
void assertNoDataField() {
assertNull(cv.fieldName);
}
void assertInitMethod(boolean frames) {
assertEquals(InstrSupport.INITMETHOD_NAME, cv.methodName);
assertEquals(InstrSupport.INITMETHOD_ACC, cv.methodAccess);
assertEquals(Boolean.valueOf(frames), Boolean.valueOf(cv.frames));
}
void assertNoInitMethod() {
assertNull(cv.methodName);
}
}
|
