public void DivideThreeNumbers()
{
var displayMock = Substitute.For<Display>();
var sut = new RpnCalc(displayMock);
sut.Pressed(10.0);
sut.Enter();
sut.Pressed(2.0);
sut.Divide();
sut.Pressed(2.0);
sut.Divide();
displayMock.Received(2).Show(10.0);
displayMock.Received(2).Show(2.0);
displayMock.Received(1).Show(5.0);
displayMock.Received(1).Show(2.5);
}
public void DivideOneNumberWithoutEnter()
{
var displayMock = Substitute.For<Display>();
var sut = new RpnCalc(displayMock);
sut.Pressed(1.0);
sut.Divide();
displayMock.Received(1).Show(1.0);
displayMock.Received(1).Show(0.0);
}
public void DividingTwiceAfterEnterWasPressed()
{
var displayMock = Substitute.For<Display>();
var sut = new RpnCalc(displayMock);
sut.Pressed(3.0);
sut.Enter();
sut.Pressed(2.0);
sut.Enter();
sut.Divide();
sut.Divide();
sut.Divide();
Assert.Throws<RpnCalc.DivisionException>(sut.Divide);
displayMock.Received(1).Show(1.0);
displayMock.Received(3).Show(3.0);
displayMock.Received(1).Show(0.0);
}
public void DivideTwoNumbersHavingAVeryLargeQuotientAndRoundItToTwoDigits()
{
var displayMock = Substitute.For<Display>();
var sut = new RpnCalc(displayMock);
sut.Pressed(2.0);
sut.Enter();
sut.Pressed(9.0);
sut.Divide();
displayMock.Received(2).Show(2.0);
displayMock.Received(1).Show(9.0);
displayMock.Received(1).Show(0.22);
}
