#include "input/AlternatesPicker.h"

#include <QTest>

using namespace Qt::StringLiterals;

class TestAlternatesPicker : public QObject
{
    Q_OBJECT

private Q_SLOTS:
    void opensAboveKeyExtendingRight()
    {
        AlternatesPicker picker;
        picker.open(QRectF(100, 100, 50, 60), {u"é"_s, u"è"_s, u"ê"_s}, 1000, -1000, 8);
        QVERIFY(picker.isOpen());
        QCOMPARE(picker.rect(), QRectF(100, 32, 150, 60));
        QCOMPARE(picker.selectedText(), u"é");
    }

    void staysInsideRightEdgeAndSelectsUnderFinger()
    {
        AlternatesPicker picker;
        picker.open(QRectF(900, 100, 50, 60), {u"a"_s, u"b"_s, u"c"_s}, 1000, -1000, 8);
        QCOMPARE(picker.rect().left(), 850.0);
        QCOMPARE(picker.selectedText(), u"b"); // key center x=925 lies over the second cell
    }

    void selectionFollowsFingerAndClamps()
    {
        AlternatesPicker picker;
        picker.open(QRectF(100, 100, 50, 60), {u"a"_s, u"b"_s, u"c"_s}, 1000, -1000, 8);
        picker.selectAt(210);
        QCOMPARE(picker.selected(), 2);
        picker.selectAt(-50);
        QCOMPARE(picker.selected(), 0);
        picker.selectAt(5000);
        QCOMPARE(picker.selected(), 2);
    }

    void closeClears()
    {
        AlternatesPicker picker;
        picker.open(QRectF(0, 0, 10, 10), {u"a"_s}, 100, -1000, 0);
        picker.close();
        QVERIFY(!picker.isOpen());
        QVERIFY(picker.selectedText().isEmpty());
    }

    void emptyKeyRectDoesNotOpen()
    {
        AlternatesPicker picker;
        picker.open(QRectF(), {u"a"_s, u"b"_s}, 1000, -1000, 8);
        QVERIFY(!picker.isOpen());
    }

    void lowersToStayBelowMinTop()
    {
        AlternatesPicker picker;
        picker.open(QRectF(100, 10, 50, 60), {u"a"_s}, 1000, -20, 8);
        QCOMPARE(picker.rect().top(), -20.0);
    }
};

QTEST_GUILESS_MAIN(TestAlternatesPicker)
#include "tst_alternatespicker.moc"