Update tests

Author: JimBobSquarePants

tests/ImageSharp.Drawing.Tests/Drawing/Paths/ClearRectangle.cs

@@ -12,9 +12,9 @@ namespace SixLabors.ImageSharp.Drawing.Tests.Drawing.Paths
     public class ClearRectangle : BaseImageOperationsExtensionTest
     {
         private readonly Brush brush = Brushes.Solid(Color.HotPink);
-        private RectangleF rectangle = new RectangleF(10, 10, 20, 20);
+        private RectangleF rectangle = new(10, 10, 20, 20);
 
-        private RectangularPolygon RectanglePolygon => new RectangularPolygon(this.rectangle);
+        private RectangularPolygon RectanglePolygon => new(this.rectangle);
 
         [Fact]
         public void Brush()

tests/ImageSharp.Drawing.Tests/Shapes/PolygonClipper/ClipperTests.cs

@@ -73,7 +73,7 @@ public void OverlappingTriangles()
             Assert.Equal(7, path.Count);
             foreach (Vector2 p in this.bigTriangle.Flatten().First().Points.ToArray())
             {
-                Assert.Contains(p, path, new ApproximateFloatComparer(.0001F));
+                Assert.Contains(p, path, new ApproximateFloatComparer(RectangularPolygonValueComparer.DefaultTolerance));
             }
         }
 
@@ -108,9 +108,8 @@ public void OverlappingButNotCrossingReturnsOrigionalShapes()
 
             Assert.Equal(2, shapes.Count());
 
-            const float epsilon = 0.0001F;
-            Assert.Contains(shapes, x => RectangularPolygonValueComparer.Equals(this.bigSquare, x, epsilon));
-            Assert.Contains(shapes, x => RectangularPolygonValueComparer.Equals(this.hole, x, epsilon));
+            Assert.Contains(shapes, x => RectangularPolygonValueComparer.Equals(this.bigSquare, x));
+            Assert.Contains(shapes, x => RectangularPolygonValueComparer.Equals(this.hole, x));
         }
 
         [Fact]

tests/ImageSharp.Drawing.Tests/TestUtilities/RectangularPolygonValueComparer.cs

@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
+using SixLabors.ImageSharp.Drawing.Shapes.PolygonClipper;
 
 namespace SixLabors.ImageSharp.Drawing.Tests.TestUtilities
 {
@@ -10,13 +11,15 @@ namespace SixLabors.ImageSharp.Drawing.Tests.TestUtilities
     /// </summary>
     internal static class RectangularPolygonValueComparer
     {
-        public static bool Equals(RectangularPolygon x, RectangularPolygon y, float epsilon = 0F)
+        public const float DefaultTolerance = ClipperUtils.FloatingPointTolerance;
+
+        public static bool Equals(RectangularPolygon x, RectangularPolygon y, float epsilon = DefaultTolerance)
             => Math.Abs(x.Left - y.Left) < epsilon
             && Math.Abs(x.Top - y.Top) < epsilon
             && Math.Abs(x.Right - y.Right) < epsilon
             && Math.Abs(x.Bottom - y.Bottom) < epsilon;
 
-        public static bool Equals(RectangularPolygon x, object y, float epsilon = 0F)
+        public static bool Equals(RectangularPolygon x, object y, float epsilon = DefaultTolerance)
             => y is RectangularPolygon polygon && Equals(x, polygon, epsilon);
     }
 }