private void DivButton_Click(object sender, EventArgs e)
{
CalcFinction s = new CalcFinction();
displayX.Text = Convert.ToString(s.Div(Convert.ToDouble(displayX.Text),
Convert.ToDouble(displayY.Text)));
displayY.Clear();
}
public void DivTest_forInt_x20dot5_y2_expected_10dot25()
{
//arrage
double x = 20.5;
double y = 2;
double expected = 10.25;
//act
CalcFinction s = new CalcFinction();
double actual = s.Div(x, y);
//assert
Assert.AreEqual(expected, actual);
}