Besides the accuracy, speed, and efficiency in testing, Mocha provides you with amazing features like -
As Mocha’s default interface is a Behavior-Driven Development (BDD), it makes it possible to develop predictable software that is resilient to changes and less prone to errors.
Mocha has become popular due to the highly useful advantages that it provides its users with. So, let’s take a look at them to understand them better.
Being capable of installing any tool in multiple ways gives its users great flexibility. That’s why Mocha is preferred as it allows you to install it in multiple ways such as globally, as a development dependency for your project, or it provides you with the setup to run test cases directly on the web browser.
Due to such amazing support for multiple libraries, you become able to easily write lengthy and complex test cases to fulfill the objective that the tests work perfectly without rewriting them.
You may already know how important it is to get detailed reports of the tests executed by you. That’s why another great benefit of using Mocha is that it provides you with a wide variety of ways to report such as the list reporter, the JSON reporter, and the progress reporter. Hence, it becomes a great advantage that you get to choose the reporting option that is the best suited for your requirements.
Mocha is highly preferred for its ability to strengthen the asynchronous tests with features that invoke the callback once the test is completed. Besides that, it also enables synchronous testing by omitting the callback.
Mocha makes it easy to write high-quality tests and improves test coverage by supporting both behavior-driven development (BDD) and test-driven development (TDD).
Similar to every other innovation of Mocha.js also has a few limitations that are jotted down below.
On the other hand, due to being created in 2011, Mocha is considered a younger framework and is described as only covering the basics, allowing developers to extend it with other frameworks but is not a complete framework.
Hence, let’s check out a detailed comparison between these two popular frameworks based on their operational aspects.
The test behavior is an extremely important aspect of its success, assertions are the boolean functions that check the test behavior. An ideal case in the assertion result will be that when the test ran, it behaved as expected.
Now, Jasmine comes with a library of assertions that use an expect-style syntax while Mocha does not have any such built-in assertion library.
However, in such cases, the popular Chai assertion library can be used which has a syntax similar to Jasmine.
You must have already read about spies in our previous articles. A test double or a spy is a clone of an actual object, and it comes with the same functions as the original object. But, the functions of the spies are “stubbed out” i.e. they don’t actually do anything. The “stubbed” functions are there so that the test double frameworks become capable of watching the spy in action, tracking the calls to its functions.
However, the point is that while test doubles or spies are a super important aspect of software testing, Mocha does not come with this spy framework feature. On the other hand, Jasmine and SinonJS are two popular names that provide you with that feature.
Hence, it can be said that though Mocha does not come with the spy framework, it has amazing abilities to prioritize BDD test definitions and it is really amazing at that. And, the best part is that other frameworks can easily be combined with Mocha to extend its functionality.
These discussions are just to make you aware of different aspects of Mocha and Jasmine along with some of its top competitors. While Mocha and Jasmine both are amazing in their abilities, you must make your choice based on their capabilities of fulfilling your requirements. Also, though any one of them is a great option for you, we would recommend you combine Mocha and Jasmine with Chai and Sinon for making your tests more consistent and readable.
Mocha is compatible with most popular browsers such as -
Here we have jotted down all you need to know about Mocha. That means you will get to know about what it is, how it grew since its inception, what its advantages are, its limitations that you should plan to overcome, how it works compared to Jasmine, another popular testing framework, which browsers it supports, and so on. So, you must consider minutely going through this article.
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