#include "input/TextRules.h"

#include <QTest>

using namespace Qt::StringLiterals;

class TestTextRules : public QObject
{
    Q_OBJECT

private Q_SLOTS:
    void startsSentence_data()
    {
        QTest::addColumn<QString>("text");
        QTest::addColumn<bool>("expected");
        QTest::newRow("empty") << QString() << true;
        QTest::newRow("after period and space") << u"Hi. "_s << true;
        QTest::newRow("after question, two spaces") << u"Why?  "_s << true;
        QTest::newRow("after newline") << u"Hi\n"_s << true;
        QTest::newRow("only spaces") << u"  "_s << true;
        QTest::newRow("period without space") << u"Hi."_s << false;
        QTest::newRow("mid sentence") << u"Hi there "_s << false;
        QTest::newRow("after comma") << u"Hi, "_s << false;
        QTest::newRow("mid word") << u"Hel"_s << false;
    }

    void startsSentence()
    {
        QFETCH(QString, text);
        QFETCH(bool, expected);
        QCOMPARE(TextRules::startsSentence(text), expected);
    }

    void doubleSpacePeriod()
    {
        QVERIFY(TextRules::wantsDoubleSpacePeriod(u"word "_s));
        QVERIFY(TextRules::wantsDoubleSpacePeriod(u"42 "_s));
        QVERIFY(!TextRules::wantsDoubleSpacePeriod(u"word. "_s));
        QVERIFY(!TextRules::wantsDoubleSpacePeriod(u"word  "_s));
        QVERIFY(!TextRules::wantsDoubleSpacePeriod(u" "_s));
    }

    void deletion()
    {
        QCOMPARE(TextRules::withoutLastCharacter(u"ab"_s), u"a");
        QCOMPARE(TextRules::withoutLastCharacter(u"a👍"_s), u"a");
        QCOMPARE(TextRules::withoutLastCharacter(u"ae\u0301"_s), u"a"); // e + combining acute
        QCOMPARE(TextRules::withoutLastCharacter(u"a👍🏽"_s), u"a"); // with a skin tone
        QCOMPARE(TextRules::withoutLastCharacter(QString()), QString());
        QCOMPARE(TextRules::withoutLastWord(u"one two  "_s), u"one ");
        QCOMPARE(TextRules::withoutLastWord(u"one"_s), QString());
    }
};

QTEST_GUILESS_MAIN(TestTextRules)
#include "tst_textrules.moc"