Javascript testing (Javascript unit test) is an essential part when your developer is using logic in his code. Like hundreds of other things in the world of JavaScript , there are many choices for how to unit test the code. Here we compare some best javascript testing unit tools like karma, jasmine, Qunit, Mocha etc.

1. Top
JavaScript Testing
Tools

2. Why Javascript for Testing?
➔ Free
➔ Open Source
➔ Modular
➔ Active & Vibrant community
➔ Client & server in javascript - why not tests?

5. JavaScript Testing Tools

6. Jasmine
➔ Most used Javascript testing tool used for Python & ruby too.
➔ Simple to setup
➔ Supported by many CIs(Codeship, Travic, etc)
➔ Descriptive syntax for BDD Testing
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Quint
QUnit is a powerful JavaScript unit testing framework that helps you to
debug code. It's written by members of the jQuery team, and is the official
test suite for jQuery.
Test any regular JavaScript code, and it's even able to test server-side
JavaScript via some JavaScript engine like Rhino or V8.

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Mocha
➔ Javascript framework running on Node.js & in the browser.
➔ Mocha tests run serially, allowing for flexible and accurate reporting,
while mapping uncaught exceptions to the correct test cases.
➔ Highly extensible
➔ Easy to setup

12. Run unit tests with Mocha

13. Result of unit
tests with
Mocha

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Tape
➔ Tape is a simple TAP-producing test library for node and browsers.
➔ The tape API is a small superset of the node core assert module.
Here are some key features of Tape :
➔ Cross browser compatibility
➔ CI support

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karma
➔ Karma is a tool that enables the running of source code (i.e. JavaScript)
against real browsers via the CLI. The fact that it runs against real browsers
rather than “fakes” with a virtual DOM is extremely powerful. DOM
implementations vary across browsers therefore the idea is to use the actual
browsers for correctness.

17. AngularJS unit testing with karma

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