Method testSortSingleDateTime2

tests/spreadsheet/SpreadsheetTest.cpp:751–777

* check sorting single column of datetimes with invalid entries descending */

 * check sorting single column of datetimes with invalid entries descending
 */
void SpreadsheetTest::testSortSingleDateTime2() {
	const QVector<QDateTime> xData{
		QDateTime(QDate(2020, 02, 29), QTime(12, 12, 12)),
		QDateTime(QDate(2020, 02, 28), QTime(12, 12, 12)),
		QDateTime(QDate(2019, 02, 28), QTime(12, 12, 12)),
		QDateTime(QDate(2019, 02, 29), QTime(12, 12, 12)), // invalid
		QDateTime(QDate(2020, 02, 29), QTime(12, 12, 13)),
		QDateTime(QDate(2020, 02, 29), QTime(11, 12, 12)),
	};

	Spreadsheet sheet(QStringLiteral("test"), false);
	sheet.setColumnCount(1);
	sheet.setRowCount(8);
	auto* col = sheet.column(0);
	col->setColumnMode(AbstractColumn::ColumnMode::DateTime);
	col->replaceDateTimes(0, xData);

	// sort
	sheet.sortColumns(nullptr, {col}, false);

	// values
	QCOMPARE(col->dateTimeAt(4), QDateTime(QDate(2019, 02, 28), QTime(12, 12, 12)));
	QCOMPARE(col->dateTimeAt(3), QDateTime(QDate(2020, 02, 28), QTime(12, 12, 12)));
	QCOMPARE(col->dateTimeAt(2), QDateTime(QDate(2020, 02, 29), QTime(11, 12, 12)));
	QCOMPARE(col->dateTimeAt(1), QDateTime(QDate(2020, 02, 29), QTime(12, 12, 12)));
	QCOMPARE(col->dateTimeAt(0), QDateTime(QDate(2020, 02, 29), QTime(12, 12, 13)));
}

// multiple column
/*