“Hey! The new features of the app are crashing frequently!” These words are like a disaster for your product's reputation. So, as you want your business to reach the heights of success, you will never wish to experience such a pathetic nightmare of your app's features breaking down for carelessness in testing them thoroughly.
Yes, testing is that massive part of your product's journey that ensures its best performance in every possible situation.
You may think that your users are always looking for new features, so you should focus on developing amazing features only.
But, you must know that even if your app has numerous useful features and functionalities, it may not perform at its best. If you do not prioritize testing your app in every possible scenario, it may experience the following problems -
All these problems and many more like them can be avoided only by executing strategic tests on your app. The “strategy” part is extremely crucial here. Only if you follow a proper strategy for your test suite, then you can expect proper results from them.
The universally followed most effective testing strategy is called by a defining name i.e. Testing Pyramid. You can know all the details about it in the article “Testing Pyramid - A Path To Achieve Efficient QA”.
As we went through the importance of Software Testing, it's time to know about its largest subset. Unit testing is the traditional name for testing every small isolated part of a tech product. That means these tests are only concerned with the components that have no dependencies on the external parameters.
It can be termed as a part of a whiteboard testing technique. Here, the tester knows about the internal implementation of the software being tested. You can get to know everything about how to perform Unit Testing from the article “What Is Unit Testing? Definition, Basics, and Types”
Executing unit tests means you are testing the smallest code blocks that are called units and most importantly the tests are absolutely isolated from the external aspects.
So, naturally, there are some ideal scenarios where you must execute unit tests. The following parts of your app must be tested through unit tests.
The parts of your app that have huge dependencies on external parameters must be avoided for unit tests.
As you previously saw, unit testing means testing in isolation. Hence, in those tests, exclusive lines of code are written to test a specific portion of a software application.
Testing those portions in isolation leads to the revelation of dependencies between the function/component being tested and other units.
Though traditionally Unit Test Frameworks are used for creating automated unit tests, the amazing no-code testing tools like Preflight can enable anyone to execute awesome tests irrespective of having coding knowledge.
You may have already seen in the article “What Is Unit Testing?” that Unit Testing is of two types i.e.
Though traditionally unit tests have been executed manually, to cope with the surge in speed, the number of users, and the demand for efficient features, automated testing is being given great preference. Hence, we are jotting down a brief explanation of the automated approach here.
Based on operational techniques, unit testing techniques are mainly divided into three categories i.e.
Commonly used code coverage techniques used in unit testing are as follows -
As the title of this section suggests, there are numerous automated unit testing tools available in the market. And, though each one of them gives a terrific competition to the others, we are here jotting down five highly renowned among them.
There is no need to specifically mention the popularity of Test Driven Development. But, the good news is that using efficient testing frameworks makes it tremendously easy and advantageous to execute Unit tests in TDD.
The primary function of a unit test framework is to create automated unit tests. Those frameworks are essential to TDD. The result of associating TDD with unit testing is explained below -
There are some interesting and funny myths about unit testing. The two most popular ones among them are -
As the title says, the above ones are the myths you are having about unit testing. The reality is that unit tests are a great booster to the speed of development.
Another huge mistake that is often done by testers is thinking that integration tests can identify all errors and as a result of this misconception, they skip conducting unit tests.
But, in reality, it leads to a situation where there are so many small errors that could be easily identified and corrected through unit tests but they have now become extremely time-consuming to be traced and fixed.
Well, it's pretty obvious that there are strong reasons behind such immense popularity of unit tests.
There are numerous awesome benefits of unit testing that lead towards the great performance of your application. So, let's check out more details about them.
If you are planning to run good unit tests, you will never have to worry during refactoring or re-writing your code. Executing efficient unit tests provides you with the assurance that refactoring your code will never cause the breaking of any other functionality.
Easy Addition of New Features
Unit testing lets you stay relaxed during adding new features to your app's codebase. All you have to do is re-running all your small unit tests whenever you add a new feature. This will ensure that the existing features are working perfectly.
Unit tests make you habituated to writing modular code that is a more dynamic approach. As your features are separated into independent modules, the modular codes make it much easier for you.
Whenever you want to copy a feature to another codebase, you just need to copy the module and tests to the new codebase. Then you are free to re-run the tests to check if anything is broken.
Well-written unit tests mean you get detailed documentation for your codebase along with great accuracy. The unit tests' documentation provides you with information like the working of your code, their input, output, etc.
To ensure that this documentation always remains up-to-date, whenever your code is updated, unit tests are also updated.
As unit tests check every smallest bit of your code, you are left with no other option than to think through every piece of code before writing it. This makes it easier to identify every bug before deploying the software. Hence, eventually, unit tests save you a lot of time and money.
Like every great innovation of technology, unit testing also has some limitations. Get to know them in detail below -
Here, we are jotting down some best practices for unit tests so that you can achieve the best results.
Till now, you got to know almost everything you should know about unit testing. But, you must remember that to match the pace with the modern efficient codeless world, you must plan all your tests with Preflight, the ultimate no-code testing tool for everyone.
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