+const { randomInt } = require('crypto')
const { expect } = require('expect')
+const {
+ CircularArray,
+ DEFAULT_CIRCULAR_ARRAY_SIZE
+} = require('../lib/circular-array')
const {
availableParallelism,
+ average,
+ exponentialDelay,
isAsyncFunction,
isKillBehavior,
isPlainObject,
median,
round,
+ secureRandom,
+ sleep,
updateMeasurementStatistics
} = require('../lib/utils')
const { KillBehaviors } = require('../lib/worker/worker-options')
describe('Utils test suite', () => {
it('Verify availableParallelism() behavior', () => {
expect(typeof availableParallelism() === 'number').toBe(true)
+ expect(availableParallelism()).toBeGreaterThan(0)
+ expect(Number.isSafeInteger(availableParallelism())).toBe(true)
+ })
+
+ it('Verify sleep() behavior', async () => {
+ const now = performance.now()
+ await sleep(1000)
+ const elapsed = performance.now() - now
+ expect(elapsed).toBeGreaterThanOrEqual(1000)
+ })
+
+ it('Verify exponentialDelay() behavior', () => {
+ expect(typeof exponentialDelay(randomInt(1000)) === 'number').toBe(true)
+ expect(exponentialDelay(randomInt(1000))).toBeGreaterThanOrEqual(
+ Number.MIN_VALUE
+ )
+ expect(exponentialDelay(randomInt(1000))).toBeLessThanOrEqual(
+ Number.MAX_VALUE
+ )
+ })
+
+ it('Verify average() computation', () => {
+ expect(average([])).toBe(0)
+ expect(average([0.08])).toBe(0.08)
+ expect(average([0.25, 4.75, 3.05, 6.04, 1.01, 2.02, 5.03])).toBe(
+ 3.1642857142857146
+ )
+ expect(average([0.25, 4.75, 3.05, 6.04, 1.01, 2.02])).toBe(
+ 2.8533333333333335
+ )
})
it('Verify median() computation', () => {
})
it('Verify updateMeasurementStatistics() behavior', () => {
- const measurementStatistics = {}
+ const measurementStatistics = {
+ history: new CircularArray()
+ }
updateMeasurementStatistics(
measurementStatistics,
{ aggregate: true, average: false, median: false },
- 0.01,
- 1
+ 0.01
)
- expect(measurementStatistics).toEqual({
+ expect(measurementStatistics).toStrictEqual({
aggregate: 0.01,
maximum: 0.01,
- minimum: 0.01
+ minimum: 0.01,
+ history: new CircularArray()
})
updateMeasurementStatistics(
measurementStatistics,
{ aggregate: true, average: false, median: false },
- 0.02,
- 2
+ 0.02
)
- expect(measurementStatistics).toEqual({
+ expect(measurementStatistics).toStrictEqual({
aggregate: 0.03,
maximum: 0.02,
- minimum: 0.01
+ minimum: 0.01,
+ history: new CircularArray()
})
updateMeasurementStatistics(
measurementStatistics,
{ aggregate: true, average: true, median: false },
- 0.001,
- 3
+ 0.001
)
- expect(measurementStatistics).toEqual({
+ expect(measurementStatistics).toStrictEqual({
aggregate: 0.031,
maximum: 0.02,
minimum: 0.001,
- average: 0.010333333333333333
+ average: 0.001,
+ history: new CircularArray(DEFAULT_CIRCULAR_ARRAY_SIZE, 0.001)
+ })
+ updateMeasurementStatistics(
+ measurementStatistics,
+ { aggregate: true, average: true, median: false },
+ 0.003
+ )
+ expect(measurementStatistics).toStrictEqual({
+ aggregate: 0.034,
+ maximum: 0.02,
+ minimum: 0.001,
+ average: 0.002,
+ history: new CircularArray(DEFAULT_CIRCULAR_ARRAY_SIZE, 0.001, 0.003)
})
})
+
+ it('Verify secureRandom() behavior', () => {
+ const randomNumber = secureRandom()
+ expect(typeof randomNumber === 'number').toBe(true)
+ expect(randomNumber).toBeGreaterThanOrEqual(0)
+ expect(randomNumber).toBeLessThan(1)
+ })
})