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39 lines
1.5 KiB
TypeScript
39 lines
1.5 KiB
TypeScript
import { assert } from 'chai'
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import ExponentialBackoff from '../src/client/backoff'
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describe('ExponentialBackoff', function () {
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it('duration() return value starts with the min value', function () {
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// default: 100ms
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assert.equal(new ExponentialBackoff().duration(), 100)
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assert.equal(new ExponentialBackoff({ min: 100 }).duration(), 100)
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assert.equal(new ExponentialBackoff({ min: 123 }).duration(), 123)
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})
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it('duration() return value increases when called multiple times', function () {
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const backoff = new ExponentialBackoff({ min: 100, max: 1000 })
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assert.strictEqual(backoff.duration(), 100)
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assert.strictEqual(backoff.duration(), 200)
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assert.strictEqual(backoff.duration(), 400)
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assert.strictEqual(backoff.duration(), 800)
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})
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it('duration() never returns greater than the max value', function () {
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const backoff = new ExponentialBackoff({ min: 300, max: 1000 })
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assert.strictEqual(backoff.duration(), 300)
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assert.strictEqual(backoff.duration(), 600)
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assert.strictEqual(backoff.duration(), 1000)
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assert.strictEqual(backoff.duration(), 1000)
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})
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it('reset() will reset the duration() value', function () {
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const backoff = new ExponentialBackoff({ min: 100, max: 1000 })
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assert.strictEqual(backoff.duration(), 100)
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assert.strictEqual(backoff.duration(), 200)
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assert.strictEqual(backoff.duration(), 400)
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backoff.reset()
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assert.strictEqual(backoff.duration(), 100)
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assert.strictEqual(backoff.duration(), 200)
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})
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})
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