diff --git a/test/core/Circle.js b/test/core/Circle.js
index 183f98f..f621992 100644
--- a/test/core/Circle.js
+++ b/test/core/Circle.js
@@ -53,6 +53,10 @@
         expect(circ1.contains(10, 16)).to.be.false;
         expect(circ1.contains(11, 15)).to.be.false;
         expect(circ1.contains(0, 0)).to.be.false;
+
+        const circ2 = new PIXI.Circle(10, 10, 0);
+
+        expect(circ2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()

diff --git a/test/core/Circle.js b/test/core/Circle.js
index 183f98f..f621992 100644
--- a/test/core/Circle.js
+++ b/test/core/Circle.js
@@ -53,6 +53,10 @@
         expect(circ1.contains(10, 16)).to.be.false;
         expect(circ1.contains(11, 15)).to.be.false;
         expect(circ1.contains(0, 0)).to.be.false;
+
+        const circ2 = new PIXI.Circle(10, 10, 0);
+
+        expect(circ2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()
diff --git a/test/core/Ellipse.js b/test/core/Ellipse.js
index f2e8234..3f47442 100644
--- a/test/core/Ellipse.js
+++ b/test/core/Ellipse.js
@@ -56,6 +56,10 @@
         expect(ellipse1.contains(10, 16)).to.be.false;
         expect(ellipse1.contains(11, 15)).to.be.false;
         expect(ellipse1.contains(0, 0)).to.be.false;
+
+        const ellipse2 = new PIXI.Ellipse(10, 10, 0, 0);
+
+        expect(ellipse2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()

diff --git a/test/core/Circle.js b/test/core/Circle.js
index 183f98f..f621992 100644
--- a/test/core/Circle.js
+++ b/test/core/Circle.js
@@ -53,6 +53,10 @@
         expect(circ1.contains(10, 16)).to.be.false;
         expect(circ1.contains(11, 15)).to.be.false;
         expect(circ1.contains(0, 0)).to.be.false;
+
+        const circ2 = new PIXI.Circle(10, 10, 0);
+
+        expect(circ2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()
diff --git a/test/core/Ellipse.js b/test/core/Ellipse.js
index f2e8234..3f47442 100644
--- a/test/core/Ellipse.js
+++ b/test/core/Ellipse.js
@@ -56,6 +56,10 @@
         expect(ellipse1.contains(10, 16)).to.be.false;
         expect(ellipse1.contains(11, 15)).to.be.false;
         expect(ellipse1.contains(0, 0)).to.be.false;
+
+        const ellipse2 = new PIXI.Ellipse(10, 10, 0, 0);
+
+        expect(ellipse2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()
diff --git a/test/core/Matrix.js b/test/core/Matrix.js
index 9d2694b..76bd57c 100644
--- a/test/core/Matrix.js
+++ b/test/core/Matrix.js
@@ -107,10 +107,60 @@
         expect(m1.ty).to.equal(m2.ty);
     });
 
+    it('should prepend matrix', function ()
+    {
+        const m1 = new PIXI.Matrix();
+        const m2 = new PIXI.Matrix();
+
+        m2.set(2, 3, 4, 5, 100, 200);
+        m1.prepend(m2);
+
+        expect(m1.a).to.equal(m2.a);
+        expect(m1.b).to.equal(m2.b);
+        expect(m1.c).to.equal(m2.c);
+        expect(m1.d).to.equal(m2.d);
+        expect(m1.tx).to.equal(m2.tx);
+        expect(m1.ty).to.equal(m2.ty);
+
+        const m3 = new PIXI.Matrix();
+        const m4 = new PIXI.Matrix();
+
+        m3.prepend(m4);
+
+        expect(m3.a).to.equal(m4.a);
+        expect(m3.b).to.equal(m4.b);
+        expect(m3.c).to.equal(m4.c);
+        expect(m3.d).to.equal(m4.d);
+        expect(m3.tx).to.equal(m4.tx);
+        expect(m3.ty).to.equal(m4.ty);
+    });
+
     it('should get IDENTITY and TEMP_MATRIX', function ()
     {
         expect(PIXI.Matrix.IDENTITY instanceof PIXI.Matrix).to.be.true;
         expect(PIXI.Matrix.TEMP_MATRIX instanceof PIXI.Matrix).to.be.true;
     });
-});
 
+    it('should reset matrix to default when identity() is called', function ()
+    {
+        const matrix = new PIXI.Matrix();
+
+        matrix.set(2, 3, 4, 5, 100, 200);
+
+        expect(matrix.a).to.equal(2);
+        expect(matrix.b).to.equal(3);
+        expect(matrix.c).to.equal(4);
+        expect(matrix.d).to.equal(5);
+        expect(matrix.tx).to.equal(100);
+        expect(matrix.ty).to.equal(200);
+
+        matrix.identity();
+
+        expect(matrix.a).to.equal(1);
+        expect(matrix.b).to.equal(0);
+        expect(matrix.c).to.equal(0);
+        expect(matrix.d).to.equal(1);
+        expect(matrix.tx).to.equal(0);
+        expect(matrix.ty).to.equal(0);
+    });
+});

diff --git a/test/core/Circle.js b/test/core/Circle.js
index 183f98f..f621992 100644
--- a/test/core/Circle.js
+++ b/test/core/Circle.js
@@ -53,6 +53,10 @@
         expect(circ1.contains(10, 16)).to.be.false;
         expect(circ1.contains(11, 15)).to.be.false;
         expect(circ1.contains(0, 0)).to.be.false;
+
+        const circ2 = new PIXI.Circle(10, 10, 0);
+
+        expect(circ2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()
diff --git a/test/core/Ellipse.js b/test/core/Ellipse.js
index f2e8234..3f47442 100644
--- a/test/core/Ellipse.js
+++ b/test/core/Ellipse.js
@@ -56,6 +56,10 @@
         expect(ellipse1.contains(10, 16)).to.be.false;
         expect(ellipse1.contains(11, 15)).to.be.false;
         expect(ellipse1.contains(0, 0)).to.be.false;
+
+        const ellipse2 = new PIXI.Ellipse(10, 10, 0, 0);
+
+        expect(ellipse2.contains(10, 10)).to.be.false;
     });
 
     it('should return framing rectangle', function ()
diff --git a/test/core/Matrix.js b/test/core/Matrix.js
index 9d2694b..76bd57c 100644
--- a/test/core/Matrix.js
+++ b/test/core/Matrix.js
@@ -107,10 +107,60 @@
         expect(m1.ty).to.equal(m2.ty);
     });
 
+    it('should prepend matrix', function ()
+    {
+        const m1 = new PIXI.Matrix();
+        const m2 = new PIXI.Matrix();
+
+        m2.set(2, 3, 4, 5, 100, 200);
+        m1.prepend(m2);
+
+        expect(m1.a).to.equal(m2.a);
+        expect(m1.b).to.equal(m2.b);
+        expect(m1.c).to.equal(m2.c);
+        expect(m1.d).to.equal(m2.d);
+        expect(m1.tx).to.equal(m2.tx);
+        expect(m1.ty).to.equal(m2.ty);
+
+        const m3 = new PIXI.Matrix();
+        const m4 = new PIXI.Matrix();
+
+        m3.prepend(m4);
+
+        expect(m3.a).to.equal(m4.a);
+        expect(m3.b).to.equal(m4.b);
+        expect(m3.c).to.equal(m4.c);
+        expect(m3.d).to.equal(m4.d);
+        expect(m3.tx).to.equal(m4.tx);
+        expect(m3.ty).to.equal(m4.ty);
+    });
+
     it('should get IDENTITY and TEMP_MATRIX', function ()
     {
         expect(PIXI.Matrix.IDENTITY instanceof PIXI.Matrix).to.be.true;
         expect(PIXI.Matrix.TEMP_MATRIX instanceof PIXI.Matrix).to.be.true;
     });
-});
 
+    it('should reset matrix to default when identity() is called', function ()
+    {
+        const matrix = new PIXI.Matrix();
+
+        matrix.set(2, 3, 4, 5, 100, 200);
+
+        expect(matrix.a).to.equal(2);
+        expect(matrix.b).to.equal(3);
+        expect(matrix.c).to.equal(4);
+        expect(matrix.d).to.equal(5);
+        expect(matrix.tx).to.equal(100);
+        expect(matrix.ty).to.equal(200);
+
+        matrix.identity();
+
+        expect(matrix.a).to.equal(1);
+        expect(matrix.b).to.equal(0);
+        expect(matrix.c).to.equal(0);
+        expect(matrix.d).to.equal(1);
+        expect(matrix.tx).to.equal(0);
+        expect(matrix.ty).to.equal(0);
+    });
+});
diff --git a/test/core/TilingSprite.js b/test/core/TilingSprite.js
index 2e449a7..7694792 100644
--- a/test/core/TilingSprite.js
+++ b/test/core/TilingSprite.js
@@ -24,4 +24,25 @@
             expect(bounds.height).to.equal(600);
         });
     });
+
+    it('checks if tilingSprite contains a point', function ()
+    {
+        const texture = new PIXI.Texture(new PIXI.BaseTexture());
+        const tilingSprite = new PIXI.extras.TilingSprite(texture, 200, 300);
+
+        expect(tilingSprite.containsPoint(new PIXI.Point(1, 1))).to.equal(true);
+        expect(tilingSprite.containsPoint(new PIXI.Point(300, 400))).to.equal(false);
+    });
+
+    it('gets and sets height and width correctly', function ()
+    {
+        const texture = new PIXI.Texture(new PIXI.BaseTexture());
+        const tilingSprite = new PIXI.extras.TilingSprite(texture, 200, 300);
+
+        tilingSprite.width = 400;
+        tilingSprite.height = 600;
+
+        expect(tilingSprite.width).to.equal(400);
+        expect(tilingSprite.height).to.equal(600);
+    });
 });