public void Pop_Test()
{
IStack <char> stack = new StackViaArray <char>(5);
stack.Push('A');
stack.Push('B');
stack.Push('C');
stack.Push('D');
stack.Push('E');
stack.IsEmpty.Should().BeFalse();
stack.Count.Should().Be(5);
stack.Pop().Should().Be('E');
stack.Count.Should().Be(4);
stack.Pop().Should().Be('D');
stack.Count.Should().Be(3);
stack.Pop().Should().Be('C');
stack.Count.Should().Be(2);
stack.Pop().Should().Be('B');
stack.Count.Should().Be(1);
stack.Pop().Should().Be('A');
stack.Count.Should().Be(0);
Action act = () => stack.Pop();
act.Should().Throw <IndexOutOfRangeException>()
.WithMessage("Stack is empty.");
}
public void Push_Test()
{
IStack <char> stack = new StackViaArray <char>(5);
stack.Push('A');
stack.Push('B');
stack.Push('C');
stack.Push('D');
stack.Push('E');
stack.IsEmpty.Should().BeFalse();
stack.Count.Should().Be(5);
}
public void Push_Test()
{
IStackViaArray <char> stack = new StackViaArray <char>(5);
stack.IsFull.Should().BeFalse();
stack.Push('A');
stack.IsFull.Should().BeFalse();
stack.Push('B');
stack.IsFull.Should().BeFalse();
stack.Push('C');
stack.IsFull.Should().BeFalse();
stack.Push('D');
stack.IsFull.Should().BeFalse();
stack.Push('E');
stack.IsFull.Should().BeTrue();
stack.IsEmpty.Should().BeFalse();
stack.Count.Should().Be(5);
Action act = () => stack.Push('K');
act.Should().Throw <InvalidOperationException>()
.WithMessage("Stack overflow");
}