public void GivenAnEmptyQueue_WhenPushingTwoUsersToQueue_ThenPoppingUserShouldReturnFirstUser()
{
var queue = new UserQueue();
queue.PushUserToQueue(Guid.NewGuid(), "Dan");
queue.PushUserToQueue(Guid.NewGuid(), "Bob");
queue.PopUserFromQueue().Should().BeEquivalentTo("Dan");
}
public void GivenAQueueWithThreeUsers_EnsureExpectedOrderWhenPopping()
{
var queue = new UserQueue();
queue.PushUserToQueue(Guid.NewGuid(), "Dan");
queue.PushUserToQueue(Guid.NewGuid(), "Bob");
queue.PushUserToQueue(Guid.NewGuid(), "Fred");
queue.PopUserFromQueue().Should().BeEquivalentTo("Dan");
queue.PopUserFromQueue().Should().BeEquivalentTo("Bob");
queue.PopUserFromQueue().Should().BeEquivalentTo("Fred");
queue.PopUserFromQueue().Should().BeNull();
}