LineNode tests

tests/Avalonia.Visuals.UnitTests/Rendering/SceneGraph/LineNodeTests.cs

@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+using Avalonia.Media;
+using Avalonia.Rendering.SceneGraph;
+using Xunit;
+
+namespace Avalonia.Visuals.UnitTests.Rendering.SceneGraph
+{
+    public class LineNodeTests
+    {
+        [Fact]
+        public void HitTest_Should_Be_True()
+        {
+            var lineNode = new LineNode(
+                Matrix.Identity, 
+                new Pen(Brushes.Black, 3),
+                new Point(15, 15),
+                new Point(150, 150));
+
+
+            List<Point> pointsInside = new()
+            {
+                new Point(14, 14),
+                new Point(15, 15),
+                new Point(32.1, 30),
+                new Point(30, 32.1),
+                new Point(150, 150),
+                new Point(151, 151),
+            };
+
+            foreach (var point in pointsInside)
+            {
+                Assert.True(lineNode.HitTest(point)); 
+            }
+        }
+        
+        [Fact]
+        public void HitTest_Should_Be_False()
+        {
+            var lineNode = new LineNode(
+                Matrix.Identity, 
+                new Pen(Brushes.Black, 3),
+                new Point(15, 15),
+                new Point(150, 150));
+
+
+            List<Point> pointsOutside= new()
+            {
+                new Point(13.9, 13.9),
+                new Point(30, 32.2),
+                new Point(32.2, 30),
+                new Point(151.1, 151.1),
+                new Point(200, 200),
+            };
+
+            foreach (var point in pointsOutside)
+            {
+                Assert.False(lineNode.HitTest(point)); 
+            }
+        }
+    }
+}