Method columnRemove

tests/cartesianplot/CartesianPlotTest.cpp:1407–1457

}

void CartesianPlotTest::columnRemove() {
	Project project;

	auto* worksheet = new Worksheet(QStringLiteral("Worksheet"));
	project.addChild(worksheet);

	auto* plot = new CartesianPlot(QStringLiteral("plot"));
	worksheet->addChild(plot);
	plot->setType(CartesianPlot::Type::TwoAxes); // Otherwise no axis are created
	plot->setNiceExtend(false);

	auto* sheet = new Spreadsheet(QStringLiteral("data"), false);
	project.addChild(sheet);
	sheet->setColumnCount(2);

	const auto& columns = sheet->children<Column>();
	QCOMPARE(columns.count(), 2);
	const auto* xColumn = columns.at(0);
	const auto* yColumn = columns.at(1);
	const auto& xColumnPath = xColumn->path();
	const auto& yColumnPath = yColumn->path();

	auto* curve = new XYCurve(QStringLiteral("curve"));
	plot->addChild(curve);
	curve->setXColumn(xColumn);
	curve->setYColumn(yColumn);

	QSignalSpy xColumnSpy(curve, SIGNAL(xDataChanged()));
	QSignalSpy yColumnSpy(curve, SIGNAL(yDataChanged()));

	// remove the second column in the spreadsheet
	// the x-column in the curve is invalidated, the old path is still valid so we can restore later
	sheet->removeColumns(1, 1);
	QCOMPARE(curve->xColumn(), xColumn);
	QCOMPARE(curve->xColumnPath(), xColumnPath);
	QCOMPARE(xColumnSpy.count(), 0);

	QCOMPARE(curve->yColumn(), nullptr);
	QCOMPARE(curve->yColumnPath(), yColumnPath);
	QCOMPARE(yColumnSpy.count(), 1); // data changed signal has to be emitted to notify the parent plot

	// undo the removal and check again
	project.undoStack()->undo();
	QCOMPARE(curve->xColumn(), xColumn);
	QCOMPARE(curve->xColumnPath(), xColumnPath);
	QCOMPARE(xColumnSpy.count(), 0);

	QCOMPARE(curve->yColumn(), yColumn);
	QCOMPARE(curve->yColumnPath(), yColumnPath);
	QCOMPARE(yColumnSpy.count(), 2);
}

/*!
 * check the correct restore of the data source column in the plots after the column was removed,