Method testReferenceLineDuplicate

tests/backend/Worksheet/WorksheetElementTest.cpp:463–482

! * \brief create and add a new ReferenceLine, duplicate it and check the number of children */

 * \brief create and add a new ReferenceLine, duplicate it and check the number of children
 */
void WorksheetElementTest::testReferenceLineDuplicate() {
	Project project;
	auto* ws = new Worksheet(QStringLiteral("worksheet"));
	project.addChild(ws);

	auto* plot = new CartesianPlot(QStringLiteral("plot"));
	ws->addChild(plot);

	auto* line = new ReferenceLine(plot, QStringLiteral("line"));
	plot->addChild(line);

	line->duplicate();

	auto children = plot->children<ReferenceLine>();
	QCOMPARE(children.size(), 2);

	project.undoStack()->undo();
	children = plot->children<ReferenceLine>();
	QCOMPARE(children.size(), 1);
}

void WorksheetElementTest::referenceLineLinearScaling() {
	Project project;