diff --git a/src/core/math/shapes/Rectangle.js b/src/core/math/shapes/Rectangle.js
index 3e4f18f..29b312a 100644
--- a/src/core/math/shapes/Rectangle.js
+++ b/src/core/math/shapes/Rectangle.js
@@ -222,19 +222,14 @@
     /**
      * Enlarges this rectangle to include the passed rectangle.
      *
-     * @param {PIXI.Rectangle} rect - The rectangle to include.
+     * @param {PIXI.Rectangle} rectangle - The rectangle to include.
      */
-    enlarge(rect)
+    enlarge(rectangle)
     {
-        if (rect === Rectangle.EMPTY)
-        {
-            return;
-        }
-
-        const x1 = Math.min(this.x, rect.x);
-        const x2 = Math.max(this.x + this.width, rect.x + rect.width);
-        const y1 = Math.min(this.y, rect.y);
-        const y2 = Math.max(this.y + this.height, rect.y + rect.height);
+        const x1 = Math.min(this.x, rectangle.x);
+        const x2 = Math.max(this.x + this.width, rectangle.x + rectangle.width);
+        const y1 = Math.min(this.y, rectangle.y);
+        const y2 = Math.max(this.y + this.height, rectangle.y + rectangle.height);
 
         this.x = x1;
         this.width = x2 - x1;

diff --git a/src/core/math/shapes/Rectangle.js b/src/core/math/shapes/Rectangle.js
index 3e4f18f..29b312a 100644
--- a/src/core/math/shapes/Rectangle.js
+++ b/src/core/math/shapes/Rectangle.js
@@ -222,19 +222,14 @@
     /**
      * Enlarges this rectangle to include the passed rectangle.
      *
-     * @param {PIXI.Rectangle} rect - The rectangle to include.
+     * @param {PIXI.Rectangle} rectangle - The rectangle to include.
      */
-    enlarge(rect)
+    enlarge(rectangle)
     {
-        if (rect === Rectangle.EMPTY)
-        {
-            return;
-        }
-
-        const x1 = Math.min(this.x, rect.x);
-        const x2 = Math.max(this.x + this.width, rect.x + rect.width);
-        const y1 = Math.min(this.y, rect.y);
-        const y2 = Math.max(this.y + this.height, rect.y + rect.height);
+        const x1 = Math.min(this.x, rectangle.x);
+        const x2 = Math.max(this.x + this.width, rectangle.x + rectangle.width);
+        const y1 = Math.min(this.y, rectangle.y);
+        const y2 = Math.max(this.y + this.height, rectangle.y + rectangle.height);
 
         this.x = x1;
         this.width = x2 - x1;
diff --git a/test/core/Rectangle.js b/test/core/Rectangle.js
index 71f4355..40ca3b0 100644
--- a/test/core/Rectangle.js
+++ b/test/core/Rectangle.js
@@ -67,25 +67,6 @@
         expect(rect2.contains(21, 21)).to.be.false;
     });
 
-    it('should make rectangle grow', function ()
-    {
-        const rect = new PIXI.Rectangle(10, 10, 10, 10);
-
-        rect.pad(1, 1);
-
-        expect(rect.left).to.equal(9);
-        expect(rect.top).to.equal(9);
-        expect(rect.right).to.equal(21);
-        expect(rect.bottom).to.equal(21);
-
-        rect.pad(10, 10);
-
-        expect(rect.left).to.equal(-1);
-        expect(rect.top).to.equal(-1);
-        expect(rect.right).to.equal(31);
-        expect(rect.bottom).to.equal(31);
-    });
-
     it('should enlarge rectangle', function ()
     {
         const rect1 = new PIXI.Rectangle(10, 10, 10, 10);
@@ -97,5 +78,91 @@
         expect(rect1.top).to.equal(10);
         expect(rect1.right).to.equal(25);
         expect(rect1.bottom).to.equal(25);
+
+        const rect3 = new PIXI.Rectangle(0, 0, 0, 0);
+        const rect4 = new PIXI.Rectangle(10, 10, 10, 10);
+
+        rect4.enlarge(rect3);
+
+        expect(rect4.left).to.equal(0);
+        expect(rect4.top).to.equal(0);
+        expect(rect4.right).to.equal(20);
+        expect(rect4.bottom).to.equal(20);
+    });
+
+    it('should pad a rectangle', function ()
+    {
+        // Pad with X & Y
+        const rect = new PIXI.Rectangle(10, 10, 10, 10);
+
+        rect.pad(10, 10);
+
+        expect(rect.left).to.equal(0);
+        expect(rect.top).to.equal(0);
+        expect(rect.right).to.equal(30);
+        expect(rect.bottom).to.equal(30);
+
+        // Pad with X
+        const rect1 = new PIXI.Rectangle(10, 10, 10, 10);
+
+        rect1.pad(10);
+
+        expect(rect1.left).to.equal(0);
+        expect(rect1.top).to.equal(0);
+        expect(rect1.right).to.equal(30);
+        expect(rect1.bottom).to.equal(30);
+
+        // Pad with nothing
+        const rect2 = new PIXI.Rectangle(10, 10, 10, 10);
+
+        rect2.pad();
+
+        expect(rect2.left).to.equal(10);
+        expect(rect2.top).to.equal(10);
+        expect(rect2.right).to.equal(20);
+        expect(rect2.bottom).to.equal(20);
+
+        // Pad with Y
+        const rect3 = new PIXI.Rectangle(10, 10, 10, 10);
+
+        rect3.pad(null, 10);
+
+        expect(rect3.left).to.equal(10);
+        expect(rect3.top).to.equal(0);
+        expect(rect3.right).to.equal(20);
+        expect(rect3.bottom).to.equal(30);
+    });
+
+    it('should fit a rectangle', function ()
+    {
+        const rect1 = new PIXI.Rectangle(0, 0, -10, -10);
+        const rect2 = new PIXI.Rectangle(-10, -10, 5, 5);
+
+        rect2.fit(rect1);
+
+        expect(rect2.left).to.equal(0);
+        expect(rect2.top).to.equal(0);
+        expect(rect2.right).to.equal(0);
+        expect(rect2.bottom).to.equal(0);
+
+        const rect3 = new PIXI.Rectangle(0, 0, 20, 20);
+        const rect4 = new PIXI.Rectangle(10, 0, 20, 20);
+
+        rect3.fit(rect4);
+
+        expect(rect3.left).to.equal(10);
+        expect(rect3.top).to.equal(0);
+        expect(rect3.right).to.equal(30);
+        expect(rect3.bottom).to.equal(20);
+    });
+
+    it('should generate an empty rectangle', function ()
+    {
+        const rect = PIXI.Rectangle.EMPTY;
+
+        expect(rect.left).to.equal(0);
+        expect(rect.top).to.equal(0);
+        expect(rect.right).to.equal(0);
+        expect(rect.bottom).to.equal(0);
     });
 });