public void WithEmptyPeg_ShouldAllowDiscOntoPeg()
{
//Arrange
var disc = FakeDiscDataBuilder.Create().WithSize(1).Build();
var sut = CreateSut(2);
//Act
sut.PlaceDisc(disc);
//Assert
sut.CurrentNumberOfDiscs.Should().Be(1);
}
public void ShouldAllowSkippingDiscSizes()
{
//Arrange
var disc1 = FakeDiscDataBuilder.Create().WithSize(3).Build();
var disc2 = FakeDiscDataBuilder.Create().WithSize(1).Build();
var sut = CreateSut(3);
//Act
sut.PlaceDisc(disc1);
sut.PlaceDisc(disc2);
//Assert
sut.CurrentNumberOfDiscs.Should().Be(2);
}
public void ShouldNotAllowBigDiscOnTopOfSmallDiscs()
{
//Arrange
var disc1 = FakeDiscDataBuilder.Create().WithSize(1).Build();
var disc2 = FakeDiscDataBuilder.Create().WithSize(2).Build();
var sut = CreateSut(2);
//Act
sut.PlaceDisc(disc1);
Action action = () => sut.PlaceDisc(disc2);
//Assert
action.Should().Throw <InvalidOperationException>().WithMessage("Cannot place bigger disc on top of smaller disc");
}
public void ShouldEnumrateTheDiscsFromTheBottomUp()
{
//Arrange
var disc1 = FakeDiscDataBuilder.Create().WithSize(3).Build();
var disc2 = FakeDiscDataBuilder.Create().WithSize(2).Build();
var disc3 = FakeDiscDataBuilder.Create().WithSize(1).Build();
var sut = CreateSut(3);
sut.PlaceDisc(disc1);
sut.PlaceDisc(disc2);
sut.PlaceDisc(disc3);
//Act
//Assert
sut.AllDiscs().Should().ContainInOrder(disc1, disc2, disc3);
}
public void ShouldRemoveLastDiscFromPeg()
{
//Arrange
var disc1 = FakeDiscDataBuilder.Create().WithSize(3).Build();
var disc2 = FakeDiscDataBuilder.Create().WithSize(2).Build();
var sut = CreateSut(2);
sut.PlaceDisc(disc1);
sut.PlaceDisc(disc2);
//Act
var actual = sut.TakeTopDisc();
//Assert
sut.CurrentNumberOfDiscs.Should().Be(1);
}
public void ShouldReturnLastDiscFromPeg()
{
//Arrange
var disc1 = FakeDiscDataBuilder.Create().WithSize(3).Build();
var disc2 = FakeDiscDataBuilder.Create().WithSize(2).Build();
var sut = CreateSut(2);
sut.PlaceDisc(disc1);
sut.PlaceDisc(disc2);
//Act
var actual = sut.TakeTopDisc();
//Assert
actual.Should().Be(disc2);
}
public void ShouldNotAllowMoreTanMaxDiscsOnPeg()
{
//Arrange
var disc1 = FakeDiscDataBuilder.Create().WithSize(3).Build();
var disc2 = FakeDiscDataBuilder.Create().WithSize(2).Build();
var disc3 = FakeDiscDataBuilder.Create().WithSize(1).Build();
var sut = CreateSut(2);
//Act
sut.PlaceDisc(disc1);
sut.PlaceDisc(disc2);
Action action = () => sut.PlaceDisc(disc3);
//Assert
action.Should().Throw <InvalidOperationException>().WithMessage("This peg is full");
}
