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39 lines
1.3 KiB
39 lines
1.3 KiB
3 years ago
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/* global describe, it */
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var assert = require('assert')
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var isGenerator = require('./')
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describe('is-generator', function () {
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describe('generators', function () {
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it('should return false with non-generators', function () {
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assert(!isGenerator(null))
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assert(!isGenerator(25))
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assert(!isGenerator('test'))
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assert(!isGenerator(/* istanbul ignore next */ function () {}))
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assert(!isGenerator(/* istanbul ignore next */ function * () {}))
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})
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it('should return true with a generator', function () {
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assert(isGenerator((/* istanbul ignore next */ function * () {})()))
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})
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})
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describe('generator functions', function () {
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it('should return false with non-generator function', function () {
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assert(!isGenerator.fn(null))
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assert(!isGenerator.fn(25))
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assert(!isGenerator.fn('test'))
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assert(!isGenerator.fn(/* istanbul ignore next */ function () {}))
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var noConstructorFn = /* istanbul ignore next */ function () {}
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noConstructorFn.constructor = undefined
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assert(!isGenerator.fn(noConstructorFn))
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})
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it('should return true with a generator function', function () {
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assert(isGenerator.fn(/* istanbul ignore next */ function * () { yield 'something' }))
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})
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})
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})
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