Method autoScaleLog10

tests/backend/Axis/AxisTest3.cpp:1145–1257

}

void AxisTest3::autoScaleLog10() {
	QLocale::setDefault(QLocale::C); // use . as decimal separator
	Project project;
	auto* ws = new Worksheet(QStringLiteral("worksheet"));
	QVERIFY(ws != nullptr);
	project.addChild(ws);

	auto* p = new CartesianPlot(QStringLiteral("plot"));
	p->setType(CartesianPlot::Type::TwoAxes); // Otherwise no axes are created
	QVERIFY(p != nullptr);
	ws->addChild(p);

	auto axes = p->children<Axis>();
	QCOMPARE(axes.count(), 2);
	QCOMPARE(axes.at(0)->name(), QStringLiteral("x"));
	QCOMPARE(axes.at(1)->name(), QStringLiteral("y"));
	auto* xAxis = static_cast<Axis*>(axes.at(0));
	xAxis->setMajorTicksNumber(4);
	QCOMPARE(xAxis->scale(), RangeT::Scale::Linear);
	QCOMPARE(xAxis->rangeScale(), true);

	auto range = p->range(Dimension::X, 0);
	range.setStart(10);
	range.setEnd(10000);
	p->setRange(Dimension::X, 0, range);
	p->setNiceExtend(false);

	{
		QStringList expectedStrings{
			QStringLiteral("10"),
			QStringLiteral("3340"),
			QStringLiteral("6670"),
			QStringLiteral("10000"),
		};
		COMPARE_STRING_VECTORS(xAxis->tickLabelStrings(), expectedStrings);
	}

	p->enableAutoScale(Dimension::X, 0, false, true);
	range = p->range(Dimension::X, 0);
	range.setScale(RangeT::Scale::Log10);
	p->setRange(Dimension::X, 0, range);

	QCOMPARE(xAxis->range(), range);
	QCOMPARE(xAxis->scale(), RangeT::Scale::Log10);

	{
		QStringList expectedStrings{
			QStringLiteral("10"),
			QStringLiteral("100"),
			QStringLiteral("1000"),
			QStringLiteral("10000"),
		};
		COMPARE_STRING_VECTORS(xAxis->tickLabelStrings(), expectedStrings);
	}

	xAxis->setScale(RangeT::Scale::Square); // Shall not change anything
	{
		QStringList expectedStrings{