Slide 22
Slide 22 text
[Test]
public void Show_result_of_an_addition_on_the_display()
{
var stubCalculatorEngine = Substitute.For();
stubCalculatorEngine.Add(1, 2).Returns(3);
var mockCalculatorDisplay = Substitute.For();
var calculator =
new Calculator(stubCalculatorEngine, mockCalculatorDisplay);
calculator.Type('1', '+', '2', '=');
mockCalculatorDisplay.Received().Show("3");
}