de.unisb.cs.st.javalanche.mutation.analyze.AnalyzeUtil.java Source code

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Here is the source code for de.unisb.cs.st.javalanche.mutation.analyze.AnalyzeUtil.java

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/*
* 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.analyze;

import java.util.Collection;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Set;

import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;

import de.unisb.cs.st.javalanche.mutation.results.Mutation;
import de.unisb.cs.st.javalanche.mutation.results.MutationTestResult;
import de.unisb.cs.st.javalanche.mutation.results.TestMessage;

/**
 * 
 * Utility class that is used by several analyze classes.
 * 
 * @author David Schuler
 * 
 */
public class AnalyzeUtil {

    /**
     * Formats a given double value to percent.
     * 
     * @param percent
     * @return a formated percent string.
     */
    static String formatPercent(double percent) {
        return String.format("%2.2f%%", percent * 100);
    }

    /**
     * Formats a given the given values to percent string.
     * 
     * @param fraction
     * @param total
     * @return a formated percent string.
     */
    public static String formatPercent(int fraction, int total) {
        return formatPercent((double) fraction / total);
    }

    /**
     * Comparator that compares mutations regarding their total number of
     * invariant violations
     */
    // public static final Comparator<Mutation> TOTAL_VIOLATIONS_COMPARATOR =
    // new Comparator<Mutation>() {
    // public int compare(Mutation o1, Mutation o2) {
    // MutationTestResult mutationResult1 = o1.getMutationResult();
    // MutationTestResult mutationResult2 = o2.getMutationResult();
    // return mutationResult1.getTotalViolations()
    // - mutationResult2.getTotalViolations();
    // }
    //
    // };

    /**
     * Comparator that compares mutations regarding their total number of
     * invariant violations
     */
    // public static final Comparator<Mutation> DIFFERENT_VIOLATIONS_COMPARATOR
    // = new Comparator<Mutation>() {
    // public int compare(Mutation o1, Mutation o2) {
    // MutationTestResult mutationResult1 = o1.getMutationResult();
    // MutationTestResult mutationResult2 = o2.getMutationResult();
    // return mutationResult1.getDifferentViolatedInvariants()
    // - mutationResult2.getDifferentViolatedInvariants();
    // }
    //
    // };

    /**
     * Returns a multimap that contains a mapping between the tests and the
     * mutations that are detected by the test.
     * 
     * @param mutations
     *            the mutations to check.
     * @return the multimap between the tests and mutations.
     */
    public static Multimap<String, Mutation> getDetectedByTest(Iterable<Mutation> mutations) {
        Multimap<String, Mutation> mm = HashMultimap.create();
        for (Mutation mutation : mutations) {
            if (mutation.isKilled()) {
                MutationTestResult mutationResult = mutation.getMutationResult();
                Collection<TestMessage> errors = mutationResult.getErrors();
                Collection<TestMessage> failures = mutationResult.getFailures();
                Set<TestMessage> all = new HashSet<TestMessage>(errors);
                all.addAll(failures);
                for (TestMessage testMessage : all) {
                    String testCaseName = testMessage.getTestCaseName();
                    mm.put(testCaseName, mutation);
                }
            }
        }
        return mm;
    }

}