public void ProperlyCreateDatabaseBehaviorAndSetMessage()
        {
            //Arrange
            var app = new App();

            //Act
            app.setBehavior(new DatabaseBehavior());
            app.setMessage("Hello World");

            //Assert
            Assert.IsInstanceOfType(app.getBehavior(), typeof(DatabaseBehavior));
            Assert.AreEqual("Hello World", app.getMessage());
        }