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test: add engine and strategy overlap tests, update stripe filler tests

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New EngineOverlapTests verifies all engine types produce overlap-free
results. New StrategyOverlapTests checks each fill strategy individually.
StripeFillerTests updated to verify returned parts are overlap-free
rather than just asserting non-empty results. Remove obsolete FitCircle
tests from GeometrySimplifierTests (method was removed).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-27 14:13:47 -04:00
parent 740fd79adc
commit fd93cc9db2
4 changed files with 210 additions and 40 deletions
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36
OpenNest.Tests/GeometrySimplifierTests.cs
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@@ -5,42 +5,6 @@ namespace OpenNest.Tests;
public class GeometrySimplifierTests
{
[Fact]
public void FitCircle_PointsOnKnownCircle_ReturnsCorrectCenterAndRadius()
{
// 21 points on a semicircle centered at (5, 3) with radius 10
var center = new Vector(5, 3);
var radius = 10.0;
var points = new List<Vector>();
for (var i = 0; i <= 20; i++)
{
var angle = i * System.Math.PI / 20;
points.Add(new Vector(
center.X + radius * System.Math.Cos(angle),
center.Y + radius * System.Math.Sin(angle)));
}
var (fitCenter, fitRadius) = GeometrySimplifier.FitCircle(points);
Assert.InRange(fitCenter.X, 4.999, 5.001);
Assert.InRange(fitCenter.Y, 2.999, 3.001);
Assert.InRange(fitRadius, 9.999, 10.001);
}
[Fact]
public void FitCircle_CollinearPoints_ReturnsInvalidCenter()
{
// Collinear points should produce degenerate result
var points = new List<Vector>
{
new(0, 0), new(1, 0), new(2, 0), new(3, 0), new(4, 0)
};
var (fitCenter, _) = GeometrySimplifier.FitCircle(points);
Assert.False(fitCenter.IsValid());
}
[Fact]
public void Analyze_LinesFromSemicircle_FindsOneCandidate()
{