test(engine): add FillStrategyRegistry and pipeline tests

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-18 13:08:13 -04:00
parent 7bbfe06494
commit 202f49f368
2 changed files with 97 additions and 0 deletions
--- a/OpenNest.Tests/Strategies/FillPipelineTests.cs
+++ b/OpenNest.Tests/Strategies/FillPipelineTests.cs
@@ -0,0 +1,62 @@
+using OpenNest.Geometry;
+
+namespace OpenNest.Tests.Strategies;
+
+public class FillPipelineTests
+{
+    private static Drawing MakeRectDrawing(double w, double h, string name = "rect")
+    {
+        var pgm = new OpenNest.CNC.Program();
+        pgm.Codes.Add(new OpenNest.CNC.RapidMove(new Vector(0, 0)));
+        pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(w, 0)));
+        pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(w, h)));
+        pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(0, h)));
+        pgm.Codes.Add(new OpenNest.CNC.LinearMove(new Vector(0, 0)));
+        return new Drawing(name, pgm);
+    }
+
+    [Fact]
+    public void Pipeline_PopulatesPhaseResults()
+    {
+        var plate = new Plate(120, 60);
+        var engine = new DefaultNestEngine(plate);
+        var item = new NestItem { Drawing = MakeRectDrawing(20, 10) };
+
+        engine.Fill(item, plate.WorkArea(), null, System.Threading.CancellationToken.None);
+
+        Assert.True(engine.PhaseResults.Count >= 4,
+            $"Expected phase results from all strategies, got {engine.PhaseResults.Count}");
+    }
+
+    [Fact]
+    public void Pipeline_SetsWinnerPhase()
+    {
+        var plate = new Plate(120, 60);
+        var engine = new DefaultNestEngine(plate);
+        var item = new NestItem { Drawing = MakeRectDrawing(20, 10) };
+
+        var parts = engine.Fill(item, plate.WorkArea(), null, System.Threading.CancellationToken.None);
+
+        Assert.True(parts.Count > 0);
+        Assert.True(engine.WinnerPhase == NestPhase.Pairs ||
+                    engine.WinnerPhase == NestPhase.Linear ||
+                    engine.WinnerPhase == NestPhase.RectBestFit ||
+                    engine.WinnerPhase == NestPhase.Extents);
+    }
+
+    [Fact]
+    public void Pipeline_RespectsCancellation()
+    {
+        var plate = new Plate(120, 60);
+        var engine = new DefaultNestEngine(plate);
+        var item = new NestItem { Drawing = MakeRectDrawing(20, 10) };
+        var cts = new System.Threading.CancellationTokenSource();
+        cts.Cancel();
+
+        // Pre-cancelled token should return empty or partial results without throwing
+        var parts = engine.Fill(item, plate.WorkArea(), null, cts.Token);
+
+        // Should not throw — graceful degradation
+        Assert.NotNull(parts);
+    }
+}