test: improve priority queue coverage

[poolifier.git] / tests / priority-queue.test.mjs

diff --git a/tests/priority-queue.test.mjs b/tests/priority-queue.test.mjs
index f366dc0fe5e442d3500b035de1f925abb840a1c3..d65d6f1656fffb8229d158ca6577ef77208c3471 100644 (file)
--- a/tests/priority-queue.test.mjs
+++ b/tests/priority-queue.test.mjs
@@ -5,49 +5,74 @@ import { defaultBucketSize, PriorityQueue } from '../lib/priority-queue.cjs'
 
 describe('Priority queue test suite', () => {
   it('Verify constructor() behavior', () => {
-    const priorityQueue = new PriorityQueue()
+    expect(() => new PriorityQueue('')).toThrow(
+      new TypeError("Invalid bucket size: '' is not an integer")
+    )
+    expect(() => new PriorityQueue(-1)).toThrow(
+      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, 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)
+    expect(priorityQueue.tail).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
   })
 
   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)
     expect(priorityQueue.maxSize).toBe(1)
     expect(rtSize).toBe(priorityQueue.size)
     expect(priorityQueue.head.nodeArray).toMatchObject([
-      { data: 1, priority: 0 }
+      { data: 1, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtSize = priorityQueue.enqueue(2)
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(2)
     expect(priorityQueue.maxSize).toBe(2)
     expect(rtSize).toBe(priorityQueue.size)
     expect(priorityQueue.head.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
-      { data: 2, priority: 0 }
+      { data: 2, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtSize = priorityQueue.enqueue(3)
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(3)
     expect(priorityQueue.maxSize).toBe(3)
     expect(rtSize).toBe(priorityQueue.size)
     expect(priorityQueue.head.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
       { data: 2, priority: 0 },
-      { data: 3, priority: 0 }
+      { data: 3, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtSize = priorityQueue.enqueue(3, -1)
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(4)
     expect(priorityQueue.maxSize).toBe(4)
     expect(rtSize).toBe(priorityQueue.size)
@@ -55,11 +80,12 @@ describe('Priority queue test suite', () => {
       { data: 3, priority: -1 },
       { data: 1, priority: 0 },
       { data: 2, priority: 0 },
-      { data: 3, priority: 0 }
+      { data: 3, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtSize = priorityQueue.enqueue(1, 1)
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(5)
     expect(priorityQueue.maxSize).toBe(5)
     expect(rtSize).toBe(priorityQueue.size)
@@ -68,174 +94,232 @@ describe('Priority queue test suite', () => {
       { data: 1, priority: 0 },
       { data: 2, priority: 0 },
       { data: 3, priority: 0 },
-      { data: 1, priority: 1 }
+      { data: 1, priority: 1 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
   })
 
   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)
     expect(priorityQueue.maxSize).toBe(1)
     expect(rtSize).toBe(priorityQueue.size)
     expect(priorityQueue.head.nodeArray).toMatchObject([
-      { data: 1, priority: 0 }
+      { data: 1, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtSize = priorityQueue.enqueue(2)
+    expect(priorityQueue.buckets).toBe(1)
     expect(priorityQueue.size).toBe(2)
     expect(priorityQueue.maxSize).toBe(2)
     expect(rtSize).toBe(priorityQueue.size)
     expect(priorityQueue.head.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
-      { data: 2, priority: 0 }
+      { data: 2, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtSize = priorityQueue.enqueue(3)
+    expect(priorityQueue.buckets).toBe(1)
     expect(priorityQueue.size).toBe(3)
     expect(priorityQueue.maxSize).toBe(3)
     expect(rtSize).toBe(priorityQueue.size)
     expect(priorityQueue.head.nodeArray).toMatchObject([
-      { data: 3, priority: 0 }
+      { data: 3, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
-      { data: 2, priority: 0 }
+      { data: 2, priority: 0 },
     ])
     expect(priorityQueue.tail.next).toStrictEqual(priorityQueue.head)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     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)
     expect(priorityQueue.head.nodeArray).toMatchObject([
       { data: 3, priority: -1 },
-      { data: 3, priority: 0 }
+      { data: 3, priority: 0 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
-      { data: 2, priority: 0 }
+      { data: 2, priority: 0 },
     ])
     expect(priorityQueue.tail.next).toStrictEqual(priorityQueue.head)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     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)
     expect(priorityQueue.head.nodeArray).toMatchObject([
-      { data: 1, priority: 1 }
+      { data: 1, priority: 1 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
-      { data: 2, priority: 0 }
+      { data: 2, priority: 0 },
     ])
-    expect(priorityQueue.tail.next).not.toStrictEqual(priorityQueue.head)
     expect(priorityQueue.tail.next.nodeArray).toMatchObject([
       { data: 3, priority: -1 },
-      { data: 3, priority: 0 }
+      { data: 3, priority: 0 },
     ])
+    expect(priorityQueue.tail.next.next).toStrictEqual(priorityQueue.head)
+    expect(priorityQueue.tail.next).not.toStrictEqual(priorityQueue.head)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     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)
     expect(priorityQueue.head.nodeArray).toMatchObject([
       { data: 3, priority: -2 },
-      { data: 1, priority: 1 }
+      { data: 1, priority: 1 },
     ])
     expect(priorityQueue.head.next).toBe(undefined)
     expect(priorityQueue.tail.nodeArray).toMatchObject([
       { data: 1, priority: 0 },
-      { data: 2, priority: 0 }
+      { data: 2, priority: 0 },
     ])
-    expect(priorityQueue.tail.next).not.toStrictEqual(priorityQueue.head)
     expect(priorityQueue.tail.next.nodeArray).toMatchObject([
       { data: 3, priority: -1 },
-      { data: 3, priority: 0 }
+      { data: 3, priority: 0 },
     ])
+    expect(priorityQueue.tail.next.next).toStrictEqual(priorityQueue.head)
+    expect(priorityQueue.tail.next).not.toStrictEqual(priorityQueue.head)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
   })
 
   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)
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(3)
     expect(priorityQueue.maxSize).toBe(3)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBe(undefined)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     let rtItem = priorityQueue.dequeue()
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(2)
     expect(priorityQueue.maxSize).toBe(3)
     expect(rtItem).toBe(2)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBe(undefined)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtItem = priorityQueue.dequeue()
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(1)
     expect(priorityQueue.maxSize).toBe(3)
     expect(rtItem).toBe(1)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBe(undefined)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtItem = priorityQueue.dequeue()
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(0)
     expect(priorityQueue.maxSize).toBe(3)
     expect(rtItem).toBe(3)
     expect(priorityQueue.tail.empty()).toBe(true)
     expect(priorityQueue.tail.next).toBe(undefined)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
   })
 
   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)
     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)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     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.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     rtItem = priorityQueue.dequeue()
+    expect(priorityQueue.buckets).toBe(2)
     expect(priorityQueue.size).toBe(4)
     expect(priorityQueue.maxSize).toBe(6)
     expect(rtItem).toBe(1)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     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.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     rtItem = priorityQueue.dequeue(2)
+    expect(priorityQueue.buckets).toBe(1)
     expect(priorityQueue.size).toBe(2)
     expect(priorityQueue.maxSize).toBe(6)
     expect(rtItem).toBe(3)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail.next).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     rtItem = priorityQueue.dequeue(2)
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(1)
     expect(priorityQueue.maxSize).toBe(6)
     expect(rtItem).toBe(1)
     expect(priorityQueue.tail.empty()).toBe(false)
-    expect(priorityQueue.tail.next).toBeInstanceOf(FixedPriorityQueue)
+    expect(priorityQueue.tail.next).toBe(undefined)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
     rtItem = priorityQueue.dequeue()
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(0)
     expect(priorityQueue.maxSize).toBe(6)
     expect(rtItem).toBe(2)
     expect(priorityQueue.tail.empty()).toBe(true)
     expect(priorityQueue.tail.next).toBe(undefined)
+    expect(priorityQueue.tail).toStrictEqual(priorityQueue.head)
+  })
+
+  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', () => {
@@ -255,12 +339,14 @@ describe('Priority queue test suite', () => {
     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.head.empty()).toBe(false)
     expect(priorityQueue.tail.empty()).toBe(false)
     expect(priorityQueue.tail).not.toStrictEqual(priorityQueue.head)
     priorityQueue.clear()
+    expect(priorityQueue.buckets).toBe(0)
     expect(priorityQueue.size).toBe(0)
     expect(priorityQueue.maxSize).toBe(0)
     expect(priorityQueue.head.empty()).toBe(true)