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/*******************************************************************************
* Copyright (c) 2009, 2021 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.internal.instr;
import static org.junit.Assert.assertEquals;
import org.jacoco.core.instr.MethodRecorder;
import org.jacoco.core.internal.flow.IFrame;
import org.jacoco.core.internal.flow.LabelInfo;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
/**
* Unit tests for {@link MethodInstrumenter}.
*/
public class MethodInstrumenterTest {
private MethodInstrumenter instrumenter;
private MethodRecorder expected, actual;
private MethodVisitor expectedVisitor;
private IFrame frame;
@Before
public void setup() {
actual = new MethodRecorder();
expected = new MethodRecorder();
expectedVisitor = expected.getVisitor();
final IProbeInserter probeInserter = new IProbeInserter() {
public void insertProbe(int id) {
actual.getVisitor().visitLdcInsn("Probe " + id);
}
};
instrumenter = new MethodInstrumenter(actual.getVisitor(),
probeInserter);
frame = new IFrame() {
public void accept(MethodVisitor mv) {
mv.visitFrame(Opcodes.F_FULL, 0, null, 0, null);
}
};
}
void sampleReturn() {
return;
}
@Test
public void testVisitProbe() {
instrumenter.visitProbe(33);
expectedVisitor.visitLdcInsn("Probe 33");
assertEquals(expected, actual);
}
@Test
public void testVisitInsnWithProbe() {
instrumenter.visitInsnWithProbe(Opcodes.RETURN, 3);
expectedVisitor.visitLdcInsn("Probe 3");
expectedVisitor.visitInsn(Opcodes.RETURN);
assertEquals(expected, actual);
}
@Test
public void testVisitJumpInsnWithProbe_GOTO() {
final Label label = new Label();
instrumenter.visitJumpInsnWithProbe(Opcodes.GOTO, label, 3, frame);
expectedVisitor.visitLdcInsn("Probe 3");
expectedVisitor.visitJumpInsn(Opcodes.GOTO, label);
assertEquals(expected, actual);
}
@Test
public void testVisitJumpInsnWithProbe_IFEQ() {
testVisitJumpInsnWithProbe(Opcodes.IFEQ, Opcodes.IFNE);
}
@Test
public void testVisitJumpInsnWithProbe_IFGE() {
testVisitJumpInsnWithProbe(Opcodes.IFGE, Opcodes.IFLT);
}
@Test
public void testVisitJumpInsnWithProbe_IFGT() {
testVisitJumpInsnWithProbe(Opcodes.IFGT, Opcodes.IFLE);
}
@Test
public void testVisitJumpInsnWithProbe_IFLE() {
testVisitJumpInsnWithProbe(Opcodes.IFLE, Opcodes.IFGT);
}
@Test
public void testVisitJumpInsnWithProbe_IFLT() {
testVisitJumpInsnWithProbe(Opcodes.IFLT, Opcodes.IFGE);
}
@Test
public void testVisitJumpInsnWithProbe_IFNE() {
testVisitJumpInsnWithProbe(Opcodes.IFNE, Opcodes.IFEQ);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ACMPEQ() {
testVisitJumpInsnWithProbe(Opcodes.IF_ACMPEQ, Opcodes.IF_ACMPNE);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ACMPNE() {
testVisitJumpInsnWithProbe(Opcodes.IF_ACMPNE, Opcodes.IF_ACMPEQ);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ICMPEQ() {
testVisitJumpInsnWithProbe(Opcodes.IF_ICMPEQ, Opcodes.IF_ICMPNE);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ICMPGE() {
testVisitJumpInsnWithProbe(Opcodes.IF_ICMPGE, Opcodes.IF_ICMPLT);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ICMPGT() {
testVisitJumpInsnWithProbe(Opcodes.IF_ICMPGT, Opcodes.IF_ICMPLE);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ICMPLE() {
testVisitJumpInsnWithProbe(Opcodes.IF_ICMPLE, Opcodes.IF_ICMPGT);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ICMPLT() {
testVisitJumpInsnWithProbe(Opcodes.IF_ICMPLT, Opcodes.IF_ICMPGE);
}
@Test
public void testVisitJumpInsnWithProbe_IF_ICMPNE() {
testVisitJumpInsnWithProbe(Opcodes.IF_ICMPNE, Opcodes.IF_ICMPEQ);
}
@Test
public void testVisitJumpInsnWithProbe_IFNULL() {
testVisitJumpInsnWithProbe(Opcodes.IFNULL, Opcodes.IFNONNULL);
}
@Test
public void testVisitJumpInsnWithProbe_IFNONNULL() {
testVisitJumpInsnWithProbe(Opcodes.IFNONNULL, Opcodes.IFNULL);
}
@Test(expected = IllegalArgumentException.class)
public void testVisitJumpInsnWithProbe_InvalidOpcode() {
testVisitJumpInsnWithProbe(Opcodes.NOP, Opcodes.NOP);
}
private void testVisitJumpInsnWithProbe(int opcodeOrig, int opcodeInstr) {
final Label label = new Label();
instrumenter.visitJumpInsnWithProbe(opcodeOrig, label, 3, frame);
final Label l2 = new Label();
expectedVisitor.visitJumpInsn(opcodeInstr, l2);
expectedVisitor.visitLdcInsn("Probe 3");
expectedVisitor.visitJumpInsn(Opcodes.GOTO, label);
expectedVisitor.visitLabel(l2);
expectedVisitor.visitFrame(Opcodes.F_FULL, 0, null, 0, null);
assertEquals(expected, actual);
}
@Test
public void testVisitTableSwitchInsnWithProbes() {
final Label L0 = new Label();
final Label L1 = new Label();
final Label L2 = new Label();
LabelInfo.setProbeId(L0, 0);
LabelInfo.setProbeId(L1, 1);
instrumenter.visitTableSwitchInsnWithProbes(3, 5, L0,
new Label[] { L1, L1, L2 }, frame);
expectedVisitor.visitTableSwitchInsn(3, 4, L0,
new Label[] { L1, L1, L2 });
expectedVisitor.visitLabel(L0);
expectedVisitor.visitFrame(Opcodes.F_FULL, 0, null, 0, null);
expectedVisitor.visitLdcInsn("Probe 0");
expectedVisitor.visitJumpInsn(Opcodes.GOTO, new Label());
expectedVisitor.visitLabel(L1);
expectedVisitor.visitFrame(Opcodes.F_FULL, 0, null, 0, null);
expectedVisitor.visitLdcInsn("Probe 1");
expectedVisitor.visitJumpInsn(Opcodes.GOTO, new Label());
assertEquals(expected, actual);
}
@Test
public void testVisitLookupSwitchInsnWithProbes() {
final Label L0 = new Label();
final Label L1 = new Label();
final Label L2 = new Label();
LabelInfo.setProbeId(L0, 0);
LabelInfo.setProbeId(L1, 1);
instrumenter.visitLookupSwitchInsnWithProbes(L0,
new int[] { 10, 20, 30 }, new Label[] { L1, L1, L2 }, frame);
expectedVisitor.visitLookupSwitchInsn(L0, new int[] { 10, 20, 30 },
new Label[] { L1, L1, L2 });
expectedVisitor.visitLabel(L0);
expectedVisitor.visitFrame(Opcodes.F_FULL, 0, null, 0, null);
expectedVisitor.visitLdcInsn("Probe 0");
expectedVisitor.visitJumpInsn(Opcodes.GOTO, new Label());
expectedVisitor.visitLabel(L1);
expectedVisitor.visitFrame(Opcodes.F_FULL, 0, null, 0, null);
expectedVisitor.visitLdcInsn("Probe 1");
expectedVisitor.visitJumpInsn(Opcodes.GOTO, new Label());
assertEquals(expected, actual);
}
}
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