public void LeftOperand_WhenInputIs1299_ShouldBe2()
{
Captcha captcha = new Captcha(1, 2, 9, 9);
String operand = captcha.LeftOperand();
Assert.AreEqual("2", operand);
}
public void LeftOperand_WhenInputIs1999_ShouldBe9()
{
Captcha captcha = new Captcha(1, 9, 1, 1);
String operand = captcha.LeftOperand();
Assert.AreEqual("9", operand);
}
public void LeftOperand_WhenInputIs2911_ShouldBeOne()
{
Captcha captcha = new Captcha(2, 9, 1, 1);
String operand = captcha.LeftOperand();
Assert.AreEqual("Nine", operand);
}