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101 lines
3.2 KiB
JavaScript
101 lines
3.2 KiB
JavaScript
import assert from 'assert'
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import math from '../../../src/main'
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describe('seed', function () {
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after(function () {
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// Randomly seed random number generator
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math.config({ randomSeed: null })
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})
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it('should generate same number with seed', function () {
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math.config({ randomSeed: 'a' })
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const first = math.random()
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math.config({ randomSeed: 'a' })
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const second = math.random()
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assert.strictEqual(first, second)
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})
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it('should generate different number subsequent calls to seeded random', function () {
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math.config({ randomSeed: 'a' })
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const first = math.random()
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const second = math.random()
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assert.notStrictEqual(first, second)
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})
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it('calling with no parameters should unseed rng', function () {
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math.config({ randomSeed: 'a' })
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const firstA = math.random()
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const secondA = math.random()
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math.config({ randomSeed: 'a' })
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const firstB = math.random()
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math.config({ randomSeed: null })
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const secondB = math.random()
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assert.strictEqual(firstA, firstB)
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assert.notStrictEqual(secondA, secondB)
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})
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it('should generate same matrix with seed', function () {
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math.config({ randomSeed: 'a' })
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const first = math.random([5, 5])
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math.config({ randomSeed: 'a' })
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const second = math.random([5, 5])
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assert.strictEqual(math.deepEqual(first, second), true)
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})
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it('should generate different matrices subsequent calls to seeded random', function () {
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math.config({ randomSeed: 'a' })
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const first = math.random([5, 5])
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const second = math.random([5, 5])
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assert.strictEqual(math.deepEqual(first, second), false)
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})
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it('should pick same number with seed', function () {
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const range = math.range(1, 1000)
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math.config({ randomSeed: 'a' })
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const first = math.pickRandom(range)
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math.config({ randomSeed: 'a' })
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const second = math.pickRandom(range)
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assert.strictEqual(first, second)
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})
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it('should pick different number subsequent calls to seeded random', function () {
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// In theory these might be the same but with 'a' as seed they are different and always will be
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const range = math.range(1, 1000)
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math.config({ randomSeed: 'a' })
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const first = math.pickRandom(range)
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const second = math.pickRandom(range)
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assert.notStrictEqual(first, second)
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})
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it('should pick same int with seed', function () {
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math.config({ randomSeed: 'a' })
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const first = math.randomInt(1, 100)
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math.config({ randomSeed: 'a' })
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const second = math.randomInt(1, 100)
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assert.strictEqual(first, second)
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})
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it('should pick different int subsequent calls to seeded random', function () {
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math.config({ randomSeed: 'a' })
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const first = math.randomInt(1, 100)
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const second = math.randomInt(1, 100)
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assert.notStrictEqual(first, second)
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})
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it('should work for number seeds', function () {
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math.config({ randomSeed: 1 })
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const first = math.random()
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math.config({ randomSeed: 1 })
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const second = math.random()
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assert.strictEqual(first, second)
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})
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it('should work for object seeds', function () {
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math.config({ randomSeed: { a: 1 } })
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const first = math.random()
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math.config({ randomSeed: { a: 1 } })
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const second = math.random()
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assert.strictEqual(first, second)
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})
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})
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