/*******************************************************************************
* 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.flow;
import static org.junit.Assert.assertEquals;
import org.jacoco.core.instr.MethodRecorder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.commons.AnalyzerAdapter;
/**
* Unit tests for {@link FrameSnapshot}.
*/
public class FrameSnapshotTest {
private AnalyzerAdapter analyzer;
private IFrame frame;
private MethodRecorder expected;
private MethodVisitor expectedVisitor;
@Before
public void setup() {
analyzer = new AnalyzerAdapter("Foo", 0, "doit", "()V", null);
expected = new MethodRecorder();
expectedVisitor = expected.getVisitor();
}
@After
public void teardown() {
MethodRecorder actual = new MethodRecorder();
frame.accept(actual.getVisitor());
assertEquals(expected, actual);
}
@Test
public void testNullAnalyzer() {
frame = FrameSnapshot.create(null, 0);
}
@Test
public void testNoFrame() {
analyzer.visitJumpInsn(Opcodes.GOTO, new Label());
frame = FrameSnapshot.create(analyzer, 0);
}
@Test
public void testFrame() {
analyzer.visitInsn(Opcodes.ICONST_0);
frame = FrameSnapshot.create(analyzer, 0);
expectedVisitor.visitFrame(Opcodes.F_FULL, 1, arr("Foo"), 1,
arr(Opcodes.INTEGER));
}
@Test
public void testReduce() {
analyzer.visitInsn(Opcodes.ICONST_0);
analyzer.visitInsn(Opcodes.LCONST_0);
analyzer.visitInsn(Opcodes.ICONST_0);
analyzer.visitInsn(Opcodes.DCONST_0);
frame = FrameSnapshot.create(analyzer, 0);
final Object[] stack = arr(Opcodes.INTEGER, Opcodes.LONG,
Opcodes.INTEGER, Opcodes.DOUBLE);
expectedVisitor.visitFrame(Opcodes.F_FULL, 1, arr("Foo"), 4, stack);
}
@Test
public void testPop() {
analyzer.visitInsn(Opcodes.ICONST_0);
analyzer.visitInsn(Opcodes.LCONST_0);
analyzer.visitInsn(Opcodes.ICONST_0);
analyzer.visitInsn(Opcodes.ICONST_0);
frame = FrameSnapshot.create(analyzer, 2);
final Object[] stack = arr(Opcodes.INTEGER, Opcodes.LONG);
expectedVisitor.visitFrame(Opcodes.F_FULL, 1, arr("Foo"), 2, stack);
}
private Object[] arr(Object... elements) {
return elements;
}
}