kde-extraapps/kdevplatform/plugins/patchreview/libdiff2/tests/levenshteintest.cpp

/*
 * This file is part of KDevelop
 * Copyright 2011 Dmitry Risenberg <dmitry.risenberg@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Library General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "levenshteintest.h"

#include <QTest>
#include "../difference.h"
#include "../differencestringpair.h"
#include "../levenshteintable.h"
#include "../stringlistpair.h"

using namespace Diff2;

namespace QTest {

template<> char* toString(const Marker& marker)
{
    QByteArray result = "Marker(";
    if (marker.type() == Marker::Start) {
        result += "Start, ";
    } else {
        result += "End, ";
    }
    result += QByteArray::number(marker.offset());
    result += ')';
    return qstrdup(result.data());
}

}

void LevenshteinTest::testFirstEmptyString()
{
    DifferenceString* string1 = new DifferenceString(QString("12345"));
    DifferenceString* string2 = new DifferenceString(QString(""));
    DifferenceStringPair* pair = new DifferenceStringPair(string1, string2);
    LevenshteinTable<DifferenceStringPair> table;
    table.createTable(pair);
    table.createListsOfMarkers();
    MarkerList markersFirstExpected;
    markersFirstExpected << new Marker(Marker::Start, 0) << new Marker(Marker::End, 5);
    for (int i = 0; i < markersFirstExpected.size(); ++i) {
        QCOMPARE(*string1->markerList()[i], *markersFirstExpected[i]);
    }
    MarkerList markersSecondExpected;
    markersSecondExpected << new Marker(Marker::Start, 0) << new Marker(Marker::End, 0);
    for (int i = 0; i < markersSecondExpected.size(); ++i) {
        QCOMPARE(*string2->markerList()[i], *markersSecondExpected[i]);
    }
}

void LevenshteinTest::testSecondEmptyString()
{
    DifferenceString* string1 = new DifferenceString(QString(""));
    DifferenceString* string2 = new DifferenceString(QString("12345"));
    DifferenceStringPair* pair = new DifferenceStringPair(string1, string2);
    LevenshteinTable<DifferenceStringPair> table;
    table.createTable(pair);
    table.createListsOfMarkers();
    MarkerList markersFirstExpected;
    markersFirstExpected << new Marker(Marker::Start, 0) << new Marker(Marker::End, 0);
    for (int i = 0; i < markersFirstExpected.size(); ++i) {
        QCOMPARE(*string1->markerList()[i], *markersFirstExpected[i]);
    }
    MarkerList markersSecondExpected;
    markersSecondExpected << new Marker(Marker::Start, 0) << new Marker(Marker::End, 5);
    for (int i = 0; i < markersSecondExpected.size(); ++i) {
        QCOMPARE(*string2->markerList()[i], *markersSecondExpected[i]);
    }
}


void LevenshteinTest::testDifferenceStrings()
{
    DifferenceString* string1 = new DifferenceString(QString("aaabcddefghik"));
    DifferenceString* string2 = new DifferenceString(QString("aabcefghijk"));
    DifferenceStringPair* pair = new DifferenceStringPair(string1, string2);
    LevenshteinTable<DifferenceStringPair> table;
    table.createTable(pair);
    table.createListsOfMarkers();
    MarkerList markersFirstExpected;
    markersFirstExpected << new Marker(Marker::Start, 2) << new Marker(Marker::End, 3) << new Marker(Marker::Start, 5) << new Marker(Marker::End, 7);
    for (int i = 0; i < markersFirstExpected.size(); ++i) {
        QCOMPARE(*string1->markerList()[i], *markersFirstExpected[i]);
    }
    MarkerList markersSecondExpected;
    markersSecondExpected << new Marker(Marker::Start, 9) << new Marker(Marker::End, 10);
    for (int i = 0; i < markersSecondExpected.size(); ++i) {
        QCOMPARE(*string2->markerList()[i], *markersSecondExpected[i]);
    }
}

void LevenshteinTest::testStringLists()
{
    QStringList list1;
    list1 << "delete1" << "line1" << "line2" << "line3" << "delete2" << "delete3" << "line4";
    QStringList list2;
    list2 << "line1" << "line2" << "line3" << "insert1" << "line4" <<"insert2";
    StringListPair* pair = new StringListPair(list1, list2);
    LevenshteinTable<StringListPair> table;
    table.createTable(pair);
    table.createListsOfMarkers();

    MarkerList markersFirstExpected;
    markersFirstExpected << new Marker(Marker::Start, 0) << new Marker(Marker::End, 1) << new Marker(Marker::Start, 4) << new Marker(Marker::End, 6);
    for (int i = 0; i < markersFirstExpected.size(); ++i) {
        QCOMPARE(*pair->markerListFirst()[i], *markersFirstExpected[i]);
    }
    MarkerList markersSecondExpected;
    markersSecondExpected << new Marker(Marker::Start, 3) << new Marker(Marker::End, 4) << new Marker(Marker::Start, 5) << new Marker(Marker::End, 6);
    for (int i = 0; i < markersSecondExpected.size(); ++i) {
        QCOMPARE(*pair->markerListSecond()[i], *markersSecondExpected[i]);
    }
}

void LevenshteinTest::testSmth()
{
    QStringList list1;
    list1 << "insert1\n" << "newline1\n" << "newline2\n" << "insert2\n";;
    QStringList list2;
    list2 << "delete1\n" << "efgh\n" << "delete2\n";
    StringListPair* pair = new StringListPair(list1, list2);
    LevenshteinTable<StringListPair> table;
    table.createTable(pair);
    table.createListsOfMarkers();

    MarkerList markersFirstExpected;
    markersFirstExpected << new Marker(Marker::Start, 0) << new Marker(Marker::End, 4);
    for (int i = 0; i < markersFirstExpected.size(); ++i) {
        QCOMPARE(*pair->markerListFirst()[i], *markersFirstExpected[i]);
    }
    MarkerList markersSecondExpected;
    markersSecondExpected << new Marker(Marker::Start, 0)  << new Marker(Marker::End, 3);
    for (int i = 0; i < markersSecondExpected.size(); ++i) {
        QCOMPARE(*pair->markerListSecond()[i], *markersSecondExpected[i]);
    }
}


QTEST_MAIN(LevenshteinTest);