)
let priorityQueue = new PriorityQueue()
expect(priorityQueue.k).toBe(Infinity)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(0)
expect(priorityQueue.maxSize).toBe(0)
expect(priorityQueue.nodeArray).toStrictEqual([])
priorityQueue = new PriorityQueue(2)
expect(priorityQueue.k).toBe(2)
+ expect(priorityQueue.buckets).toBe(0)
expect(priorityQueue.size).toBe(0)
expect(priorityQueue.maxSize).toBe(0)
expect(priorityQueue.nodeArray).toStrictEqual([])
it('Verify default k enqueue() behavior', () => {
const priorityQueue = new PriorityQueue()
let rtSize = priorityQueue.enqueue(1)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(1)
expect(priorityQueue.maxSize).toBe(1)
expect(rtSize).toBe(priorityQueue.size)
expect(priorityQueue.nodeArray).toStrictEqual([{ data: 1, priority: 0 }])
rtSize = priorityQueue.enqueue(2)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(2)
expect(priorityQueue.maxSize).toBe(2)
expect(rtSize).toBe(priorityQueue.size)
{ data: 2, priority: 0 }
])
rtSize = priorityQueue.enqueue(3)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(3)
expect(priorityQueue.maxSize).toBe(3)
expect(rtSize).toBe(priorityQueue.size)
{ data: 3, priority: 0 }
])
rtSize = priorityQueue.enqueue(3, -1)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(4)
expect(priorityQueue.maxSize).toBe(4)
expect(rtSize).toBe(priorityQueue.size)
{ data: 3, priority: 0 }
])
rtSize = priorityQueue.enqueue(1, 1)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(5)
expect(priorityQueue.maxSize).toBe(5)
expect(rtSize).toBe(priorityQueue.size)
it('Verify k=2 enqueue() behavior', () => {
const priorityQueue = new PriorityQueue(2)
let rtSize = priorityQueue.enqueue(1)
+ expect(priorityQueue.buckets).toBe(0)
expect(priorityQueue.size).toBe(1)
expect(priorityQueue.maxSize).toBe(1)
expect(rtSize).toBe(priorityQueue.size)
expect(priorityQueue.nodeArray).toStrictEqual([{ data: 1, priority: 0 }])
rtSize = priorityQueue.enqueue(2)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(2)
expect(priorityQueue.maxSize).toBe(2)
expect(rtSize).toBe(priorityQueue.size)
{ data: 2, priority: 0 }
])
rtSize = priorityQueue.enqueue(3)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(3)
expect(priorityQueue.maxSize).toBe(3)
expect(rtSize).toBe(priorityQueue.size)
{ data: 3, priority: 0 }
])
rtSize = priorityQueue.enqueue(3, -1)
+ expect(priorityQueue.buckets).toBe(2)
expect(priorityQueue.size).toBe(4)
expect(priorityQueue.maxSize).toBe(4)
expect(rtSize).toBe(priorityQueue.size)
{ data: 3, priority: 0 }
])
rtSize = priorityQueue.enqueue(1, 1)
+ expect(priorityQueue.buckets).toBe(2)
expect(priorityQueue.size).toBe(5)
expect(priorityQueue.maxSize).toBe(5)
expect(rtSize).toBe(priorityQueue.size)
{ data: 3, priority: 0 },
{ data: 1, priority: 1 }
])
- rtSize = priorityQueue.enqueue(2, -2)
+ rtSize = priorityQueue.enqueue(3, -2)
+ expect(priorityQueue.buckets).toBe(3)
expect(priorityQueue.size).toBe(6)
expect(priorityQueue.maxSize).toBe(6)
expect(rtSize).toBe(priorityQueue.size)
{ data: 2, priority: 0 },
{ data: 3, priority: -1 },
{ data: 3, priority: 0 },
- { data: 2, priority: -2 },
+ { data: 3, priority: -2 },
{ data: 1, priority: 1 }
])
})
- it('Verify dequeue() behavior', () => {
+ it('Verify default k dequeue() behavior', () => {
const priorityQueue = new PriorityQueue()
priorityQueue.enqueue(1)
priorityQueue.enqueue(2, -1)
priorityQueue.enqueue(3)
+ expect(priorityQueue.buckets).toBe(1)
+ expect(priorityQueue.size).toBe(3)
+ expect(priorityQueue.maxSize).toBe(3)
let rtItem = priorityQueue.dequeue()
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(2)
expect(priorityQueue.maxSize).toBe(3)
expect(rtItem).toBe(2)
{ data: 3, priority: 0 }
])
rtItem = priorityQueue.dequeue()
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(1)
expect(priorityQueue.maxSize).toBe(3)
expect(rtItem).toBe(1)
expect(priorityQueue.nodeArray).toStrictEqual([{ data: 3, priority: 0 }])
rtItem = priorityQueue.dequeue()
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(0)
expect(priorityQueue.maxSize).toBe(3)
expect(rtItem).toBe(3)
expect(priorityQueue.nodeArray).toStrictEqual([])
})
+ it('Verify k=2 dequeue() behavior', () => {
+ const priorityQueue = new PriorityQueue(2)
+ priorityQueue.enqueue(1)
+ priorityQueue.enqueue(2)
+ priorityQueue.enqueue(3)
+ priorityQueue.enqueue(3, -1)
+ priorityQueue.enqueue(1, 1)
+ priorityQueue.enqueue(3, -2)
+ expect(priorityQueue.buckets).toBe(3)
+ expect(priorityQueue.size).toBe(6)
+ expect(priorityQueue.maxSize).toBe(6)
+ let rtItem = priorityQueue.dequeue(3)
+ expect(priorityQueue.buckets).toBe(2)
+ expect(priorityQueue.size).toBe(5)
+ expect(priorityQueue.maxSize).toBe(6)
+ expect(rtItem).toBe(3)
+ expect(priorityQueue.nodeArray).toStrictEqual([
+ { data: 1, priority: 0 },
+ { data: 2, priority: 0 },
+ { data: 3, priority: -1 },
+ { data: 3, priority: 0 },
+ { data: 1, priority: 1 }
+ ])
+ rtItem = priorityQueue.dequeue()
+ expect(priorityQueue.buckets).toBe(2)
+ expect(priorityQueue.size).toBe(4)
+ expect(priorityQueue.maxSize).toBe(6)
+ expect(rtItem).toBe(1)
+ expect(priorityQueue.nodeArray).toStrictEqual([
+ { data: 2, priority: 0 },
+ { data: 3, priority: -1 },
+ { data: 3, priority: 0 },
+ { data: 1, priority: 1 }
+ ])
+ rtItem = priorityQueue.dequeue(2)
+ expect(priorityQueue.buckets).toBe(1)
+ expect(priorityQueue.size).toBe(3)
+ expect(priorityQueue.maxSize).toBe(6)
+ expect(rtItem).toBe(3)
+ expect(priorityQueue.nodeArray).toStrictEqual([
+ { data: 2, priority: 0 },
+ { data: 3, priority: -1 },
+ { data: 1, priority: 1 }
+ ])
+ rtItem = priorityQueue.dequeue(2)
+ expect(priorityQueue.buckets).toBe(1)
+ expect(priorityQueue.size).toBe(2)
+ expect(priorityQueue.maxSize).toBe(6)
+ expect(rtItem).toBe(1)
+ expect(priorityQueue.nodeArray).toStrictEqual([
+ { data: 2, priority: 0 },
+ { data: 3, priority: -1 }
+ ])
+ rtItem = priorityQueue.dequeue(2)
+ expect(priorityQueue.buckets).toBe(0)
+ expect(priorityQueue.size).toBe(1)
+ expect(priorityQueue.maxSize).toBe(6)
+ expect(rtItem).toBe(2)
+ expect(priorityQueue.nodeArray).toStrictEqual([{ data: 3, priority: -1 }])
+ rtItem = priorityQueue.dequeue()
+ expect(priorityQueue.buckets).toBe(0)
+ expect(priorityQueue.size).toBe(0)
+ expect(priorityQueue.maxSize).toBe(6)
+ expect(rtItem).toBe(3)
+ expect(priorityQueue.nodeArray).toStrictEqual([])
+ })
+
it('Verify peekFirst() behavior', () => {
const priorityQueue = new PriorityQueue()
priorityQueue.enqueue(1)
priorityQueue.enqueue(1)
priorityQueue.enqueue(2)
priorityQueue.enqueue(3)
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(3)
expect(priorityQueue.maxSize).toBe(3)
expect(priorityQueue.nodeArray).toStrictEqual([
{ data: 3, priority: 0 }
])
priorityQueue.clear()
+ expect(priorityQueue.buckets).toBe(1)
expect(priorityQueue.size).toBe(0)
expect(priorityQueue.maxSize).toBe(0)
expect(priorityQueue.nodeArray).toStrictEqual([])