private void ClickOne(object sender, EventArgs e)
{
double first = Convert.ToDouble(textBox1.Text);
string calculationName = ((Button)sender).Name;
IOneCalculation calculator = OneCalculation.CreateCalculator(calculationName);
double result = calculator.Calculate(first);
label1.Text = Convert.ToString(result);
}
public void FactoryTest(string name, Type type)
{
IOneCalculation calc = OneCalculation.CreateCalculator(name);
Assert.IsInstanceOf(type, calc);
}