public void QueueStackIsEnptyWhenAllElementsAreRemoved()
{
var sut = new QueueStack <int>();
sut.Push(1);
sut.Push(2);
Assert.Equal(2, sut.Pop());
Assert.Equal(1, sut.Pop());
Assert.True(sut.IsEmpty);
}
public void QueueStackIncreasesCapacityOnDemand()
{
var sut = new QueueStack <int>();
sut.Push(1);
sut.Push(2);
Assert.Equal(2, sut.Pop());
Assert.Equal(1, sut.Pop());
Assert.True(sut.IsEmpty);
}
public void QueueStackWorksInLifoOrderWhenIntermittentPushesAccures()
{
var sut = new QueueStack <int>();
sut.Push(1);
sut.Push(2);
sut.Push(3);
Assert.Equal(3, sut.Pop());
sut.Push(4);
sut.Push(5);
Assert.Equal(5, sut.Pop());
Assert.Equal(4, sut.Pop());
Assert.Equal(2, sut.Pop());
Assert.Equal(1, sut.Pop());
}
public void QueueStackWorksInLifoOrder()
{
var sut = new QueueStack <int>();
for (var i = 0; i < 100; i++)
{
sut.Push(i);
}
for (var i = 99; i >= 0; i--)
{
Assert.Equal(i, sut.Pop());
}
}
public void PopFromEmptyStackThrowsAnException()
{
var sut = new QueueStack <int>();
Assert.Throws <ArgumentException>(() => sut.Pop());
}