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70 lines
1.8 KiB
70 lines
1.8 KiB
import assert from 'assert'
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import nodeify from '../../../app/scripts/lib/nodeify'
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describe('nodeify', function () {
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const obj = {
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foo: 'bar',
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promiseFunc: function (a) {
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const solution = this.foo + a
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return Promise.resolve(solution)
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},
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}
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it('should retain original context', function (done) {
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const nodified = nodeify(obj.promiseFunc, obj)
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nodified('baz', (err, res) => {
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if (!err) {
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assert.equal(res, 'barbaz')
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done()
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return
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}
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done(new Error(err.toString()))
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})
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})
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it('no callback - should allow the last argument to not be a function', function (done) {
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const nodified = nodeify(obj.promiseFunc, obj)
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try {
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nodified('baz')
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done()
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} catch (err) {
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done(new Error('should not have thrown if the last argument is not a function'))
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}
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})
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it('sync functions - returns value', function (done) {
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const nodified = nodeify(() => 42)
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try {
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nodified((err, result) => {
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if (err) {
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done(new Error(`should not have thrown any error: ${err.message}`))
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return
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}
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assert.equal(42, result, 'got expected result')
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})
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done()
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} catch (err) {
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done(new Error(`should not have thrown any error: ${err.message}`))
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}
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})
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it('sync functions - handles errors', function (done) {
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const nodified = nodeify(() => {
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throw new Error('boom!')
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})
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try {
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nodified((err, result) => {
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if (result) {
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done(new Error('should not have returned any result'))
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return
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}
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assert.ok(err, 'got expected error')
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assert.ok(err.message.includes('boom!'), 'got expected error message')
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})
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done()
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} catch (err) {
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done(new Error(`should not have thrown any error: ${err.message}`))
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}
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})
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})
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