public void GivenTwoItems_EnQueue_LengthShouldBeTwo()
{
//Arrange
var size = 5;
var sampleQueue = new SampleQueue(size);
//Act
sampleQueue.EnQueue(1);
sampleQueue.EnQueue(2);
//Assert
Assert.AreEqual(2, sampleQueue.Length);
}
public void GivenQueueWithLengthFive_DeQueue_TwoItems_LengthShouldBeThree()
{
//Arrange
var size = 5;
var sampleQueue = new SampleQueue(size);
sampleQueue.EnQueue(1);
sampleQueue.EnQueue(2);
sampleQueue.EnQueue(3);
sampleQueue.EnQueue(4);
sampleQueue.EnQueue(5);
//Act
sampleQueue.DeQueue();
sampleQueue.DeQueue();
//Assert
Assert.AreEqual(3, sampleQueue.Length);
}
public void GivenQueueWithLengthThree_DeQueue_FourItems_ThrowsIndexOutOfRangeException()
{
//Arrange
var size = 3;
var sampleQueue = new SampleQueue(size);
sampleQueue.EnQueue(1);
sampleQueue.EnQueue(2);
sampleQueue.EnQueue(3);
//Act
sampleQueue.DeQueue();
sampleQueue.DeQueue();
sampleQueue.DeQueue();
Action action = () => sampleQueue.DeQueue();
//Assert
Assert.ThrowsException <IndexOutOfRangeException>(action);
}
public void GivenQueueWithFullCapacity_EnQueue_ThrowsOverflowException()
{
//Arrange
var size = 5;
var sampleQueue = new SampleQueue(size);
sampleQueue.EnQueue(1);
sampleQueue.EnQueue(2);
sampleQueue.EnQueue(3);
sampleQueue.EnQueue(4);
sampleQueue.EnQueue(5);
//Act
Action action = () => sampleQueue.EnQueue(6);
//Assert
Assert.ThrowsException <OverflowException>(action);
}