public void GivenCapacity_1_ShouldCreateStackWithLength_1()
{
const int expectedLength = 1;
var myStack = MyStack.Create(expectedLength);
Assert.That(myStack.Size, Is.EqualTo(expectedLength));
}
public void GivenSize_1_Stack_WhenPushedTwiceShouldThrowMyStackOverflowException()
{
var myStack = MyStack.Create(1);
myStack.Push(1);
Assert.That(() => myStack.Push(1), Throws.TypeOf <MyStackOverflowException>());
}
public void WhenPushed_1_PopShouldReturn_1()
{
var myStack = MyStack.Create(1);
myStack.Push(1);
var result = myStack.Pop();
Assert.That(result, Is.EqualTo(1));
}
public void WhenPushed_1_2_PopShouldReturn_2_1()
{
var myStack = MyStack.Create(2);
myStack.Push(1);
myStack.Push(2);
Assert.That(myStack.Pop(), Is.EqualTo(2));
Assert.That(myStack.Pop(), Is.EqualTo(1));
}
public void GivenNegativeSize_ConstructorShouldThrowMyStackUnderflowException()
{
Assert.That(() => MyStack.Create(-1), Throws.TypeOf <MyStackNegativeSizeException>());
}
public void GivenZeroStack_PopShouldThrowMyStackUnderflowException()
{
Assert.That(() => MyStack.Create(0).Push(1), Throws.TypeOf <MyStackOverflowException>());
}
public void GivenEmptyStack_PopShouldThrowMyStackUnderflowException()
{
Assert.That(() => MyStack.Create(1).Pop(), Throws.TypeOf <MyStackUnderflowException>());
}
