001/*
002 * Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.mxtool.junit;
024
025import org.junit.runner.*;
026
027/**
028 * Timing support for JUnit test runs.
029 */
030public class TimingDecorator extends MxRunListenerDecorator {
031
032    private long startTime;
033    private long classStartTime;
034
035    public TimingDecorator(MxRunListener l) {
036        super(l);
037    }
038
039    @Override
040    public void testClassStarted(Class<?> clazz) {
041        classStartTime = System.nanoTime();
042        super.testClassStarted(clazz);
043    }
044
045    @Override
046    public void testClassFinished(Class<?> clazz) {
047        long totalTime = System.nanoTime() - classStartTime;
048        super.testClassFinished(clazz);
049        getWriter().print(' ' + valueToString(totalTime));
050    }
051
052    @Override
053    public void testStarted(Description description) {
054        startTime = System.nanoTime();
055        super.testStarted(description);
056    }
057
058    @Override
059    public void testFinished(Description description) {
060        long totalTime = System.nanoTime() - startTime;
061        super.testFinished(description);
062        getWriter().print(" " + valueToString(totalTime));
063    }
064
065    private static String valueToString(long value) {
066        return String.format("%d.%d ms", value / 1000000, (value / 100000) % 10);
067    }
068
069}