de.unisb.cs.st.javalanche.mutation.util.FilePerformanceTest.java Source code

Introduction

Here is the source code for de.unisb.cs.st.javalanche.mutation.util.FilePerformanceTest.java

Source

/*
* Copyright (C) 2011 Saarland University
* 
* This file is part of Javalanche.
* 
* Javalanche is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* 
* Javalanche is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser Public License for more details.
* 
* You should have received a copy of the GNU Lesser Public License
* along with Javalanche.  If not, see <http://www.gnu.org/licenses/>.
*/
package de.unisb.cs.st.javalanche.mutation.util;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Random;
import java.util.Set;

import org.apache.commons.lang.time.DurationFormatUtils;
import org.apache.commons.lang.time.StopWatch;

import de.unisb.cs.st.ds.util.io.SerializeIo;

public class FilePerformanceTest {

    public static void main(String[] args) throws IOException {
        int limit = 1000;
        int total = 0;
        StopWatch stp = new StopWatch();
        stp.start();
        File dir = new File("mutation-files/tmp");
        dir.mkdir();
        for (int i = 0; i < limit; i++) {
            Map<String, Set<Integer>> map = getMap();
            File tempFile = new File(dir, "test-" + i + ".ser");
            if (!tempFile.exists()) {
                SerializeIo.serializeToFile(map, tempFile);
            } else {
                Map<String, Set<Integer>> deserialize = SerializeIo.get(tempFile);
                total += deserialize.size();
            }
        }
        System.out.println(
                "Handling " + limit + " files took " + DurationFormatUtils.formatDurationHMS(stp.getTime()));
    }

    private static Map<String, Set<Integer>> getMap() {
        Map<String, Set<Integer>> map = new HashMap<String, Set<Integer>>();
        for (int i = 0; i < 100; i++) {
            map.put("key" + i, getSet(10));
        }
        return map;
    }

    static Random r = new Random();

    private static Set<Integer> getSet(int limit) {
        Set<Integer> s = new HashSet<Integer>();
        for (int i = 0; i < limit; i++) {
            s.add(r.nextInt());
        }
        return s;
    }
}