public void BackspaceTest()
{
calculator.Number("2");
calculator.Number("7");
calculator.Number("3");
calculator.Operation("-");
calculator.Number("9");
calculator.Number("8");
calculator.Number("7");
calculator.Number("0");
Assert.AreEqual("9870", calculator.Input);
calculator.Backspace();
Assert.AreEqual("987", calculator.Input);
calculator.Backspace();
Assert.AreEqual("98", calculator.Input);
calculator.Equality();
Assert.AreEqual("175", calculator.Input);
}
/// <summary>
/// Processes backspace's click
/// </summary>
private void Backspace_Click(object sender, EventArgs e)
{
calculator.Backspace();
}
