[education/labplot] tests/backend: more adjustments in the failing tests.

Git commit 8ed2c72656652196d3c131a8ff8d5d55dae9128c by Alexander Semke.
Committed on 20/07/2026 at 21:17.
Pushed by sgerlach into branch 'master'.

more adjustments in the failing tests.

M  +16   -0    tests/backend/InfoElement/InfoElementTest.cpp
M  +13   -0    tests/backend/XYCurve/XYCurveTest.cpp

https://invent.kde.org/education/labplot/-/commit/8ed2c72656652196d3c131a8ff8d5d55dae9128c

diff --git a/tests/backend/InfoElement/InfoElementTest.cpp b/tests/backend/InfoElement/InfoElementTest.cpp
index 03558c6741..75005c2ea9 100644
--- a/tests/backend/InfoElement/InfoElementTest.cpp
+++ b/tests/backend/InfoElement/InfoElementTest.cpp
@@ -39,6 +39,7 @@ void InfoElementTest::addPlot() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x");
 	curve->setEquationData(data);
 	curve->recalculate();
@@ -50,6 +51,7 @@ void InfoElementTest::addPlot() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x^2");
 	curve2->setEquationData(data);
 	curve2->recalculate();
@@ -104,6 +106,7 @@ void InfoElementTest::removeCurve() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x");
 	curve->setEquationData(data);
 	curve->recalculate();
@@ -115,6 +118,7 @@ void InfoElementTest::removeCurve() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x^2");
 	curve2->setEquationData(data);
 	curve2->recalculate();
@@ -433,6 +437,7 @@ void InfoElementTest::deleteCurveRenameAddedAutomatically() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x");
 	curve->setEquationData(data);
 	curve->recalculate();
@@ -444,6 +449,7 @@ void InfoElementTest::deleteCurveRenameAddedAutomatically() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x^2");
 	curve2->setEquationData(data);
 	curve2->recalculate();
@@ -561,6 +567,7 @@ void InfoElementTest::deleteCurveRenameAddedAutomaticallyCustomPointInvisible()
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x");
 	curve->setEquationData(data);
 	curve->recalculate();
@@ -572,6 +579,7 @@ void InfoElementTest::deleteCurveRenameAddedAutomaticallyCustomPointInvisible()
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x^2");
 	curve2->setEquationData(data);
 	curve2->recalculate();
@@ -789,6 +797,7 @@ void InfoElementTest::moveDuringMissingCurve() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x");
 	curve->setEquationData(data);
 	curve->recalculate();
@@ -799,6 +808,7 @@ void InfoElementTest::moveDuringMissingCurve() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x^2");
 	curve3->setEquationData(data);
 	curve3->recalculate();
@@ -854,6 +864,7 @@ void InfoElementTest::moveCurve() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x");
 	curve->setEquationData(data);
 	curve->recalculate();
@@ -865,6 +876,7 @@ void InfoElementTest::moveCurve() {
 	data.min = QStringLiteral("0");
 	data.max = QStringLiteral("10");
 	data.count = 11;
+	data.autoPointsCount = false;
 	data.expression1 = QStringLiteral("x^2");
 	curve2->setEquationData(data);
 	curve2->recalculate();
@@ -941,6 +953,7 @@ void InfoElementTest::saveLoad() {
 		data.min = QStringLiteral("0");
 		data.max = QStringLiteral("10");
 		data.count = 11;
+		data.autoPointsCount = false;
 		data.expression1 = QStringLiteral("x");
 		curve->setEquationData(data);
 		curve->recalculate();
@@ -952,6 +965,7 @@ void InfoElementTest::saveLoad() {
 		data.min = QStringLiteral("0");
 		data.max = QStringLiteral("10");
 		data.count = 11;
+		data.autoPointsCount = false;
 		data.expression1 = QStringLiteral("x^2");
 		curve2->setEquationData(data);
 		curve2->recalculate();
@@ -1035,6 +1049,7 @@ void InfoElementTest::saveLoadInvisiblePoint() {
 		data.min = QStringLiteral("0");
 		data.max = QStringLiteral("10");
 		data.count = 11;
+		data.autoPointsCount = false;
 		data.expression1 = QStringLiteral("x");
 		curve->setEquationData(data);
 		curve->recalculate();
@@ -1046,6 +1061,7 @@ void InfoElementTest::saveLoadInvisiblePoint() {
 		data.min = QStringLiteral("0");
 		data.max = QStringLiteral("10");
 		data.count = 11;
+		data.autoPointsCount = false;
 		data.expression1 = QStringLiteral("x^2");
 		curve2->setEquationData(data);
 		curve2->recalculate();
diff --git a/tests/backend/XYCurve/XYCurveTest.cpp b/tests/backend/XYCurve/XYCurveTest.cpp
index d22fc7a206..c3acf7f9a4 100644
--- a/tests/backend/XYCurve/XYCurveTest.cpp
+++ b/tests/backend/XYCurve/XYCurveTest.cpp
@@ -19,6 +19,7 @@
 #include "backend/worksheet/plots/cartesian/CartesianCoordinateSystem.h"
 #include "backend/worksheet/plots/cartesian/CartesianPlot.h"
 #include "backend/worksheet/plots/cartesian/Symbol.h"
+#include "backend/worksheet/plots/cartesian/XYEquationCurve.h"
 #include "backend/worksheet/plots/cartesian/XYCurve.h"
 #include "backend/worksheet/plots/cartesian/XYCurvePrivate.h"
 
@@ -2005,6 +2006,17 @@ void XYCurveTest::updateLinesWithGapSegments3() {
  */
 void XYCurveTest::updateLinesLog10() {
 	LOAD_PROJECT
+
+	// Disable automatic point calculation for this test to get predictable point count
+	// The test expects exactly 10 points from the equation evaluation
+	auto* equationCurve = dynamic_cast<XYEquationCurve*>(linear);
+	if (equationCurve) {
+		auto edata = equationCurve->equationData();
+		edata.autoPointsCount = false;
+		edata.count = 10;
+		equationCurve->setEquationData(edata);
+	}
+
 	bool updateLinesCalled = false;
 	connect(linear, &XYCurve::linesUpdated, [linearPrivate, &updateLinesCalled](const XYCurve* /*curve*/, const QVector<QLineF>& /*lines*/) {
 		updateLinesCalled = true;
@@ -2019,6 +2031,7 @@ void XYCurveTest::updateLinesLog10() {
 			QLineF(QPointF(7.8, 7.8), QPointF(8.9, 8.9)),
 			QLineF(QPointF(8.9, 8.9), QPointF(10, 10)),
 		};
+		QCOMPARE(linearPrivate->m_logicalPoints.size(), refLines.size() + 1); // last row is invalid so it will be omitted
 		auto test_lines = linearPrivate->m_lines;
 		QCOMPARE(refLines.size(), test_lines.size());
 		for (int i = 0; i < test_lines.size(); i++)