org.jacoco.core.internal.instr.ClassInstrumenterTest.java Source code

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Here is the source code for org.jacoco.core.internal.instr.ClassInstrumenterTest.java

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/*******************************************************************************
 * Copyright (c) 2009, 2013 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.assertNull;

import org.jacoco.core.runtime.IRuntime;
import org.jacoco.core.runtime.LoggerRuntime;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

/**
 * Unit tests for {@link ClassInstrumenter}.
 */
public class ClassInstrumenterTest {

    private IRuntime runtime;

    private ClassInstrumenter instrumenter;

    @Before
    public void setup() {
        runtime = new LoggerRuntime();
        instrumenter = new ClassInstrumenter(123, runtime, new ClassVisitor(Opcodes.ASM4) {
        });
    }

    @Test(expected = IllegalStateException.class)
    public void testInstrumentInstrumentedClass1() {
        instrumenter.visitField(InstrSupport.DATAFIELD_ACC, InstrSupport.DATAFIELD_NAME,
                InstrSupport.DATAFIELD_DESC, null, null);
    }

    @Test(expected = IllegalStateException.class)
    public void testInstrumentInstrumentedClass2() {
        instrumenter.visitMethod(InstrSupport.INITMETHOD_ACC, InstrSupport.INITMETHOD_NAME,
                InstrSupport.INITMETHOD_DESC, null, null);
    }

    @Test
    public void testNoMethodVisitor() {
        instrumenter = new ClassInstrumenter(123, runtime, new ClassVisitor(Opcodes.ASM4) {
            @Override
            public MethodVisitor visitMethod(int access, String name, String desc, String signature,
                    String[] exceptions) {
                return null;
            }
        });
        assertNull(instrumenter.visitMethod(0, "foo", "()V", null, null));
    }

}