1 files changed, 135 insertions, 0 deletions
diff --git a/Plugins/MonoGame.Extended/tests/MonoGame.Extended.Tests/Primitives/RectangleFTests.cs b/Plugins/MonoGame.Extended/tests/MonoGame.Extended.Tests/Primitives/RectangleFTests.cs
new file mode 100644
index 0000000..9121d6a
--- /dev/null
+++ b/Plugins/MonoGame.Extended/tests/MonoGame.Extended.Tests/Primitives/RectangleFTests.cs
@@ -0,0 +1,135 @@
+using Microsoft.Xna.Framework;
+using Xunit;
+
+namespace MonoGame.Extended.Tests.Primitives
+{
+    public class RectangleFTests
+    {
+        [Fact]
+        public void Rectangle_Intersects_Test()
+        {
+            var rect1 = new Rectangle(0, 0, 32, 32);
+            var rect2 = new Rectangle(32, 32, 32, 32);
+
+            Assert.False(rect1.Intersects(rect2));
+        }
+
+        [Fact]
+        public void PassVector2AsConstructorParameter_Test()
+        {
+            var rect1 = new RectangleF(new Vector2(0, 0), new Size2(12.34f, 56.78f));
+            var rect2 = new RectangleF(new Vector2(0, 0), new Vector2(12.34f, 56.78f));
+
+            Assert.Equal(rect1, rect2);
+        }
+
+        [Fact]
+        public void PassPointAsConstructorParameter_Test()
+        {
+            var rect1 = new RectangleF(new Vector2(0, 0), new Size2(12, 56));
+            var rect2 = new RectangleF(new Vector2(0, 0), new Size2(12, 56));
+
+            Assert.Equal(rect1, rect2);
+        }
+
+        public class Transform
+        {
+            [Fact]
+            public void Center_point_is_not_translated()
+            {
+                var rectangle = new RectangleF(new Point2(0, 0), new Size2(20, 30));
+                var transform = Matrix2.Identity;
+
+                var result = RectangleF.Transform(rectangle, ref transform);
+
+                Assert.Equal(new Point2(10, 15), result.Center);
+            }
+
+            [Fact]
+            public void Center_point_is_translated()
+            {
+                var rectangleF = new RectangleF(new Point2(0, 0), new Size2(20, 30));
+                var transform = Matrix2.CreateTranslation(1, 2);
+
+                var result = RectangleF.Transform(rectangleF, ref transform);
+
+                Assert.Equal(new Point2(11, 17), result.Center);
+            }
+
+            [Fact]
+            public void Size_is_not_changed_by_identity_transform()
+            {
+                var rectangle = new RectangleF(new Point2(0, 0), new Size2(20, 30));
+                var transform = Matrix2.Identity;
+
+                var result = RectangleF.Transform(rectangle, ref transform);
+
+                Assert.Equal(new Size2(20, 30), result.Size);
+            }
+
+            [Fact]
+            public void Size_is_not_changed_by_translation()
+            {
+                var rectangle = new RectangleF(new Point2(0, 0), new Size2(20, 30));
+                var transform = Matrix2.CreateTranslation(1, 2);
+
+                var result = RectangleF.Transform(rectangle, ref transform);
+
+                Assert.Equal(new Size2(20, 30), result.Size);
+            }
+
+            [Fact]
+            public void Applies_rotation_and_translation()
+            {
+                /*   Rectangle with center point aligned in coordinate system with origin 0.
+                 *
+                 *                    :
+                 *                    :
+                 *                    +-+
+                 *                    | |
+                 *                    |p|
+                 *                    | |
+                 *     ...............0-+............
+                 *                    :
+                 *                    :
+                 *                    :
+                 *
+                 *    Rotate center point p, 90 degrees around origin 0.
+                 *
+                 *                    :
+                 *                    :
+                 *                +---+
+                 *                | p |
+                 *     ...........+---0..............
+                 *                    :
+                 *                    :
+                 *                    :
+                 *
+                 *    Then translate rectangle by x=10 and y=20.
+                 *                    :
+                 *                    :     +---+
+                 *                    :     | p |
+                 *    y=21 - - - - - - - -> +---+
+                 *                    .
+                 *                    :
+                 *    ...............0..............
+                 *                    :
+                 *                    :
+                 *                    :
+                 */
+                var rectangle = new RectangleF(new Point2(0, 0), new Size2(2, 4));
+                var transform =
+                    Matrix2.CreateRotationZ(MathHelper.PiOver2)
+                    *
+                    Matrix2.CreateTranslation(10, 20);
+
+                var result = RectangleF.Transform(rectangle, ref transform);
+
+                Assert.Equal(-2 + 10, result.Center.X, 6);
+                Assert.Equal(1 + 20, result.Center.Y, 6);
+                Assert.Equal(4, result.Size.Width, 6);
+                Assert.Equal(2, result.Size.Height, 6);
+            }
+        }
+    }
+}