Vector2D.Equals C# (CSharp) Method

    public bool Equals(Vector2D p)
    {
        // If parameter is null return false:
        if ((object)p == null)
        {
            return false;
        }

        // Return true if the fields match:
        return (x == p.x) && (y == p.y);
    }

        public void TestEquals()
        {
            float x = 1, y = 2;
            float x2 = 3, y2 = 4;

            Vector2D v1 = new Vector2D(x, y);
            Vector2D v2 = new Vector2D(x, y);
            Vector2D v3 = new Vector2D(x2, y2);

            //Test IEquatable Equals
            Assert.IsTrue(v1.Equals(v2), "Test IEquatable equals");
            Assert.IsFalse(v1.Equals(v3), "Test IEquatable equals");

            //Test object equals override
            Assert.IsTrue(v1.Equals((object) v2), "Tests object equals");
            Assert.IsFalse(v1.Equals((object) v3), "Tests object equals");

            //Test op equals
            Assert.IsTrue(v1 == v2, "Testing OpEquals");
            Assert.IsFalse(v1 == v3, "Testing OpEquals");

            //Test op not equals
            Assert.IsTrue(v1 != v3, "Testing OpNotEquals");
            Assert.IsFalse(v1 != v2, "Testing OpNotEquals");
        }