Method zValueAfterAddMoveRemove

tests/cartesianplot/CartesianPlotTest.cpp:1668–1716

! * tests the handling of z-values on changes in the child hierarchy. */

 * tests the handling of z-values on changes in the child hierarchy.
 */
void CartesianPlotTest::zValueAfterAddMoveRemove() {
	LOAD_PROJECT_HISTOGRAM_FIT_CURVE

	// after the objects were added, the order of children is
	// * histogram
	// * curve1
	// * curve2
	int zValueHistogram = h->graphicsItem()->zValue();
	int zValueCurve1 = curve1->graphicsItem()->zValue();
	int zValueCurve2 = curve2->graphicsItem()->zValue();
	QVERIFY(zValueHistogram < zValueCurve1);
	QVERIFY(zValueCurve1 < zValueCurve2);

	// move curve1 up
	plot->moveChild(curve1, -1);

	// after the move, the order of children is
	// * curve1
	// * histogram
	// * curve2
	zValueHistogram = h->graphicsItem()->zValue();
	zValueCurve1 = curve1->graphicsItem()->zValue();
	zValueCurve2 = curve2->graphicsItem()->zValue();
	QVERIFY(zValueCurve1 < zValueHistogram);
	QVERIFY(zValueHistogram < zValueCurve2);

	// move histogram down
	plot->moveChild(h, 1);

	// after the move, the order of children is
	// * curve1
	// * curve2
	// * histogram
	zValueHistogram = h->graphicsItem()->zValue();
	zValueCurve1 = curve1->graphicsItem()->zValue();
	zValueCurve2 = curve2->graphicsItem()->zValue();
	QVERIFY(zValueCurve1 < zValueCurve2);
	QVERIFY(zValueCurve2 < zValueHistogram);

	// remove curve2
	plot->removeChild(curve2);

	// after the remove, the order of children is
	// * curve1
	// * histogram
	zValueHistogram = h->graphicsItem()->zValue();
	zValueCurve1 = curve1->graphicsItem()->zValue();
	QVERIFY(zValueCurve1 < zValueHistogram);
}

QTEST_MAIN(CartesianPlotTest)