web-midi-player | 🎹 Event-driven JavaScript library | Audio Utils library

by yvesgurcan JavaScript Version: 1.4.1 License: MIT

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kandi X-RAY | web-midi-player Summary

web-midi-player is a JavaScript library typically used in Telecommunications, Media, Media, Entertainment, Audio, Audio Utils applications. web-midi-player has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can install using 'npm i web-midi-player' or download it from GitHub, GitLab, npm.

Event-driven JavaScript library that enables MIDI playback in the browser.

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Quality

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Support

web-midi-player has a low active ecosystem.

It has 22 star(s) with 8 fork(s). There are 3 watchers for this library.

It had no major release in the last 12 months.

There are 25 open issues and 46 have been closed. On average issues are closed in 30 days. There are 51 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of web-midi-player is 1.4.1

Quality

web-midi-player has no bugs reported.

Security

web-midi-player has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

web-midi-player is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

web-midi-player releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions, examples and code snippets are available.

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web-midi-player Key Features

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web-midi-player Examples and Code Snippets

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Community Discussions

Trending Discussions on web-midi-player

Using AudioContext in unit tests

QUESTION

Using AudioContext in unit tests

Asked 2019-Dec-14 at 18:49

I am developing a JavaScript library (https://github.com/yvesgurcan/web-midi-player) to enable MIDI playback in a web application. The library relies on the Web Audio API to create a way to play these MIDI files (https://github.com/yvesgurcan/web-midi-player/blob/test/src/MidiPlayer.js#L50). However, I am having trouble creating meaningful unit tests with Jest (https://github.com/yvesgurcan/web-midi-player/blob/test/tests/midiPlayer.js) because these tests don't have access to the window object and more particularly to window.AudioContext. As a consequence, running my application code which relies on AudioContext throws errors related to the fact that this object does not exist and I can't actually test very much things in the library.

I've tried the following packages to solve my problem: jsdom, jsdom-global, and also web-audio-test-api but none of these seem to inject AudioContext in the environment.

I am thinking that the solution here would be to stub/mock AudioContext but that does not sound like a good solution for solid unit tests.

What do you folks suggest to test the Web Audio API? Is stubbing the only viable solution here?

...

ANSWER

Answered 2019-Dec-14 at 18:49

I think it depends a bit on what you want to test. Since you're using Jest I imagine you're just interested in testing the correctness of your own code. In that case I would recommend to fully mock the Web Audio API. It's not part of your responsibility and you can assume it works the way it should. The only thing you have to test is if your code is making the expected calls.

Mocking globally available variables like the AudioContext constructor is always a bit tricky but you could allow an AudioContext to be passed into your MidiPlayer class as an optional argument. It would make testing a little easier and it would also allow users of your library to bring their own AudioContext.

I think of something like this:

Source https://stackoverflow.com/questions/59337679

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install web-midi-player

By default, the player loads instrument patches via the jsDeliver CDN. Alternatively, you can download instrument patches and add them to your project. Make sure to provide the path to the uncompressed files when instantiating the MIDI player.

Support

Make sure to read our code of conduct first. Something doesn't work? We want to know! Create a new issue. Want a new feature? Awesome! Open a pull request.

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