describe('Priority queue test suite', () => {
it('Verify constructor() behavior', () => {
expect(() => new PriorityQueue('')).toThrow(
- new TypeError('bucketSize must be an integer')
+ new TypeError("Invalid bucket size: '' is not an integer")
)
expect(() => new PriorityQueue(-1)).toThrow(
- new RangeError('bucketSize must be greater than or equal to 1')
- )
- expect(() => new PriorityQueue(0)).toThrow(
- new RangeError('bucketSize must be greater than or equal to 1')
+ new RangeError('Invalid bucket size: -1 < 0')
)
let priorityQueue = new PriorityQueue()
expect(priorityQueue.bucketSize).toBe(defaultBucketSize)
expect(priorityQueue.buckets).toBe(0)
expect(priorityQueue.size).toBe(0)
expect(priorityQueue.maxSize).toBe(0)
+ expect(priorityQueue.enablePriority).toBe(false)
expect(priorityQueue.head).toBeInstanceOf(FixedPriorityQueue)
expect(priorityQueue.head.next).toBe(undefined)
expect(priorityQueue.head.capacity).toBe(defaultBucketSize)
expect(priorityQueue.tail).toBeInstanceOf(FixedPriorityQueue)
expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
const bucketSize = 2
- priorityQueue = new PriorityQueue(bucketSize)
+ priorityQueue = new PriorityQueue(bucketSize, true)
expect(priorityQueue.bucketSize).toBe(bucketSize)
expect(priorityQueue.buckets).toBe(0)
expect(priorityQueue.size).toBe(0)
expect(priorityQueue.maxSize).toBe(0)
+ expect(priorityQueue.enablePriority).toBe(true)
expect(priorityQueue.head).toBeInstanceOf(FixedPriorityQueue)
expect(priorityQueue.head.next).toBe(undefined)
expect(priorityQueue.head.capacity).toBe(bucketSize)
})
it('Verify default bucket size enqueue() behavior', () => {
- const priorityQueue = new PriorityQueue()
+ const priorityQueue = new PriorityQueue(defaultBucketSize, true)
let rtSize = priorityQueue.enqueue(1)
expect(priorityQueue.buckets).toBe(0)
expect(priorityQueue.size).toBe(1)
})
it('Verify bucketSize=2 enqueue() behavior', () => {
- const priorityQueue = new PriorityQueue(2)
+ const priorityQueue = new PriorityQueue(2, true)
let rtSize = priorityQueue.enqueue(1)
expect(priorityQueue.buckets).toBe(0)
expect(priorityQueue.size).toBe(1)
})
it('Verify default bucket size dequeue() behavior', () => {
- const priorityQueue = new PriorityQueue()
+ const priorityQueue = new PriorityQueue(defaultBucketSize, true)
priorityQueue.enqueue(1)
priorityQueue.enqueue(2, -1)
priorityQueue.enqueue(3)
})
it('Verify bucketSize=2 dequeue() behavior', () => {
- const priorityQueue = new PriorityQueue(2)
+ const priorityQueue = new PriorityQueue(2, true)
priorityQueue.enqueue(1)
priorityQueue.enqueue(2)
priorityQueue.enqueue(3)
expect(priorityQueue.tail.next).toBe(undefined)
})
+ it('Verify enablePriority setter behavior', () => {
+ const priorityQueue = new PriorityQueue(2)
+ expect(priorityQueue.enablePriority).toBe(false)
+ priorityQueue.enqueue(1)
+ priorityQueue.enqueue(2)
+ priorityQueue.enqueue(3)
+ priorityQueue.enqueue(4)
+ let buckets = 0
+ let node = priorityQueue.tail
+ while (node != null) {
+ expect(node.enablePriority).toBe(false)
+ node = node.next
+ ++buckets
+ }
+ expect(buckets).toBe(2)
+ priorityQueue.enablePriority = true
+ expect(priorityQueue.enablePriority).toBe(true)
+ node = priorityQueue.tail
+ while (node != null) {
+ expect(node.enablePriority).toBe(true)
+ node = node.next
+ }
+ })
+
it('Verify iterator behavior', () => {
const priorityQueue = new PriorityQueue(2)
priorityQueue.enqueue(1)