//Arrange
public void GetOrderTotalReturnsDecimal()
{
//Act
StoreMethods newMethod = new StoreMethods();
double dub = 25.75576;
var result = newMethod.GetOrderTotal(dub);
//Assert
Assert.IsType <double>(result);
}//test 6
//Arrange
public void GetOrderTotalReturnsCorrectOutput()
{
//Act
StoreMethods newMethod = new StoreMethods();
double dub = 25.75111;
var result = newMethod.GetOrderTotal(dub);
//Assert
Assert.Equal(25.75, result);
}//test 5
