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/*******************************************************************************
* Copyright (c) 2009, 2022 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.instr;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
import static org.objectweb.asm.Opcodes.ACC_SUPER;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.F_NEW;
import static org.objectweb.asm.Opcodes.IFEQ;
import static org.objectweb.asm.Opcodes.ILOAD;
import static org.objectweb.asm.Opcodes.INVOKESPECIAL;
import static org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
import static org.objectweb.asm.Opcodes.POP;
import static org.objectweb.asm.Opcodes.RETURN;
import static org.objectweb.asm.Opcodes.V10;
import static org.objectweb.asm.Opcodes.V11;
import static org.objectweb.asm.Opcodes.V12;
import static org.objectweb.asm.Opcodes.V13;
import static org.objectweb.asm.Opcodes.V14;
import static org.objectweb.asm.Opcodes.V15;
import static org.objectweb.asm.Opcodes.V16;
import static org.objectweb.asm.Opcodes.V1_1;
import static org.objectweb.asm.Opcodes.V1_2;
import static org.objectweb.asm.Opcodes.V1_3;
import static org.objectweb.asm.Opcodes.V1_4;
import static org.objectweb.asm.Opcodes.V1_5;
import static org.objectweb.asm.Opcodes.V1_6;
import static org.objectweb.asm.Opcodes.V1_7;
import static org.objectweb.asm.Opcodes.V1_8;
import static org.objectweb.asm.Opcodes.V9;
import java.io.IOException;
import org.jacoco.core.internal.instr.CondyProbeArrayStrategy;
import org.jacoco.core.internal.instr.InstrSupport;
import org.jacoco.core.runtime.IRuntime;
import org.jacoco.core.runtime.SystemPropertiesRuntime;
import org.junit.Test;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
/**
* Test class inserted stackmap frames for different class file versions.
*/
public class ClassFileVersionsTest {
@Test
public void test_1_1() throws IOException {
testVersion(V1_1, false);
}
@Test
public void test_1_2() throws IOException {
testVersion(V1_2, false);
}
@Test
public void test_1_3() throws IOException {
testVersion(V1_3, false);
}
@Test
public void test_1_4() throws IOException {
testVersion(V1_4, false);
}
@Test
public void test_1_5() throws IOException {
testVersion(V1_5, false);
}
@Test
public void test_1_6() throws IOException {
testVersion(V1_6, true);
}
@Test
public void test_1_7() throws IOException {
testVersion(V1_7, true);
}
@Test
public void test_1_8() throws IOException {
testVersion(V1_8, true);
}
@Test
public void test_9() throws IOException {
testVersion(V9, true);
}
@Test
public void test_10() throws IOException {
testVersion(V10, true);
}
@Test
public void test_11() throws IOException {
testVersion(V11, true);
}
@Test
public void test_12() throws IOException {
testVersion(V12, true);
}
@Test
public void test_13() throws IOException {
testVersion(V13, true);
}
@Test
public void test_14() throws IOException {
testVersion(V14, true);
}
@Test
public void test_15() throws IOException {
testVersion(V15, true);
}
@Test
public void test_16() throws IOException {
testVersion(V16, true);
}
private void testVersion(int version, boolean frames) throws IOException {
final byte[] original = createClass(version, frames);
IRuntime runtime = new SystemPropertiesRuntime();
Instrumenter instrumenter = new Instrumenter(runtime);
byte[] instrumented = instrumenter.instrument(original, "TestTarget");
assertFrames(instrumented, frames);
}
private void assertFrames(byte[] source, final boolean expected) {
InstrSupport.classReaderFor(source)
.accept(new ClassVisitor(InstrSupport.ASM_API_VERSION) {
@Override
public MethodVisitor visitMethod(int access, String name,
final String desc, String signature,
String[] exceptions) {
return new MethodVisitor(InstrSupport.ASM_API_VERSION) {
boolean frames = false;
@Override
public void visitFrame(int type, int nLocal,
Object[] local, int nStack,
Object[] stack) {
frames = true;
}
@Override
public void visitEnd() {
if (CondyProbeArrayStrategy.B_DESC
.equals(desc)) {
assertFalse(
"CondyProbeArrayStrategy does not need frames",
frames);
} else {
assertEquals(Boolean.valueOf(expected),
Boolean.valueOf(frames));
}
}
};
}
}, 0);
}
/**
* Creates a class that requires a frame before the return statement. Also
* for this class instrumentation should insert another frame.
*
* <code><pre>
* public class Sample {
* public Sample(boolean b){
* if(b){
* toString();
* }
* return;
* }
* }
* </pre></code>
*/
private byte[] createClass(int version, boolean frames) {
ClassWriter cw = new ClassWriter(0);
MethodVisitor mv;
cw.visit(version, ACC_PUBLIC + ACC_SUPER, "org/jacoco/test/Sample",
null, "java/lang/Object", null);
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Z)V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V",
false);
mv.visitVarInsn(ILOAD, 1);
Label l1 = new Label();
mv.visitJumpInsn(IFEQ, l1);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString",
"()Ljava/lang/String;", false);
mv.visitInsn(POP);
mv.visitLabel(l1);
if (frames) {
mv.visitFrame(F_NEW, 2,
new Object[] { "org/jacoco/test/Sample", Opcodes.INTEGER },
0, new Object[] {});
}
mv.visitInsn(RETURN);
mv.visitMaxs(1, 2);
mv.visitEnd();
cw.visitEnd();
return cw.toByteArray();
}
}
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