round-queue-first-test-case.js

var chai = require('chai'),
    expect = chai.expect,
    should = chai.should();

var RoundQueue = require('<round-queue-implementation>'); // We'll fix this later

describe('Round-Queue', function(){
    describe('When adding elements', function(){
        it('Should add an element to the end of a non-full queue', function() {
            // Queue with max size of 3
            var nonFullQueue = new RoundQueue(3); 
            var originalSize = nonFullQueue.size;

            var poppedElement = nonFullQueue.push(1);
            
            // When the queue is not full, no popping will be done
            expect(poppedElement).to.be.undefined;
            
            // Element should've been added to the end of the queue
            nonFullQueue.last().should.be.equal(1)
            // Size should've been increased by 1
            nonFullQueue.size.should.be.equal(originalSize + 1);
        });
    });
});