133 lines
3.2 KiB
JavaScript
133 lines
3.2 KiB
JavaScript
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/* eslint-env mocha */
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'use strict'
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/**
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* Module dependencies.
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*/
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const os = require('os')
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const assert = require('assert')
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const bufferAlloc = require('buffer-alloc')
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const Speaker = require('../')
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const endianness = os.endianness()
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const opposite = endianness === 'LE' ? 'BE' : 'LE'
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describe('exports', function () {
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it('should export a Function', function () {
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assert.equal('function', typeof Speaker)
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})
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it('should have an "api_version" property', function () {
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assert(Speaker.hasOwnProperty('api_version'))
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assert('number', typeof Speaker.api_version)
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})
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it('should have a "description" property', function () {
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assert(Speaker.hasOwnProperty('description'))
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assert('string', typeof Speaker.description)
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})
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it('should have a "module_name" property', function () {
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assert(Speaker.hasOwnProperty('module_name'))
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assert('string', typeof Speaker.module_name)
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})
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})
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describe('Speaker', function () {
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it('should return a Speaker instance', function () {
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const s = new Speaker()
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assert(s instanceof Speaker)
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})
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it('should be a writable stream', function () {
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const s = new Speaker()
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assert.equal(s.writable, true)
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assert.notEqual(s.readable, true)
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})
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it('should emit an "open" event after the first write()', function (done) {
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const s = new Speaker()
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let called = false
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s.on('open', function () {
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called = true
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done()
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})
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assert.equal(called, false)
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s.write(bufferAlloc(0))
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})
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it('should emit a "flush" event after end()', function (done) {
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const s = new Speaker()
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let called = false
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s.on('flush', function () {
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called = true
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done()
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})
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assert.equal(called, false)
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s.end(bufferAlloc(0))
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})
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it('should emit a "close" event after end()', function (done) {
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this.slow(1000)
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const s = new Speaker()
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let called = false
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s.on('close', function () {
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called = true
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done()
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})
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assert.equal(called, false)
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s.end(bufferAlloc(0))
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})
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it('should only emit one "close" event', function (done) {
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const s = new Speaker()
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let count = 0
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s.on('close', function () {
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count++
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})
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assert.equal(0, count)
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s.close()
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assert.equal(1, count)
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s.close()
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assert.equal(1, count)
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done()
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})
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it('should accept a device option', function (done) {
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const s = new Speaker({ device: 'test' })
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assert.equal(s.device, 'test')
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s.on('close', done)
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s.end(bufferAlloc(0))
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})
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it('should not throw an Error if native "endianness" is specified', function () {
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assert.doesNotThrow(function () {
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// eslint-disable-next-line no-new
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new Speaker({ endianness: endianness })
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})
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})
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it('should throw an Error if non-native "endianness" is specified', function () {
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assert.throws(function () {
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// eslint-disable-next-line no-new
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new Speaker({ endianness: opposite })
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})
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})
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it('should throw an Error if a non-supported "format" is specified', function (done) {
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const speaker = new Speaker({
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bitDepth: 31,
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signed: true
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})
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speaker.once('error', (err) => {
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assert.equal('invalid PCM format specified', err.message)
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done()
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})
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speaker.write('a')
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})
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})
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