public void CalcTest()
{
Form1_Accessor target = new Form1_Accessor(); // TODO: 適切な値に初期化してください
target.InitializeForm();
target.LeftText.Text = "10";
target.RightText.Text = "10";
target.OperatorComboBox.SelectedItem = Operators.Plus.ToSign();
Assert.AreEqual(20, target.Calc());
target.OperatorComboBox.SelectedItem = Operators.Minus.ToSign();
Assert.AreEqual(0, target.Calc());
target.OperatorComboBox.SelectedItem = Operators.Multiply.ToSign();
Assert.AreEqual(100, target.Calc());
target.OperatorComboBox.SelectedItem = Operators.Divide.ToSign();
Assert.AreEqual(1, target.Calc());
}