Test-driven development (TDD) is an important approach for React application development. TDD involves writing tests before writing code to ensure features are well-specified and code works as intended. Some key benefits of TDD for React include high test coverage, exceptional code quality, reduced costs from fewer bugs, and convenient debugging. Popular tools for TDD with React are Jest for tests, Enzyme for mounting components, and Cypress for end-to-end testing. Developers should follow best practices like single responsibility components and maximizing code reuse. Overall, TDD helps produce robust, maintainable React applications.

1. Test-Driven
Development and
ReactJS Application Go
Hand in Hand
www.bacancytechnology.com

2. Any piece of code that has no tests is said to
be legacy code.Michael Feathers
Testing in any software development
process is as essential as getting ourselves
diagnosed whenever we experience any
abnormal health symptoms. Technically, in
software development, testing is carried out
by a set of small independent codes that
deploy in line to check the performance of
the overall system.
It also ensures that the system is
performing hassle-free. Therefore, testing
over time has become an essential part of
the entire software development process.
The overall process of such kind of software
development is also known to be test-
driven development.

3. When a team of engineers starts performing
software development, it is fundamentally
essential to choose an ideal development
approach. Doing so will help you save a
significant amount of time. Hence, TDD is
considered as the most effective approach
to save time and get a product that works as
per your user’s expectation.
Test-driven development is often the most
common approach to React application
development. TDD requires software
engineers to write tests first, and once it
gets validated, then start to write the code.
However, in this article, we will keep our
primary focus on test-driven development,
and discuss the several topics surrounding
the process.

4. What is Test-
Driven
Development?

5. TDD is an evolutionary approach to the
development where you write the test first
before you write production code. The
objective is to ascertain and evaluate small
pieces of system files for a whole case
scenario used in live application
developments. In this case, it is not by
writing the codes first, but by initially
finding out the specifications required for
the test. Only when a developer has his
specifications of a given test fixed, he can go
ahead writing the codes for it.

6. Usually, a developer writes a lot of
specifications for the test without even
writing a single line of code, and that is
pretty normal in this case. However, doing
so puts a considerable amount of focus on
the bigger picture of the project, its
structure and components, and all the
features the software is going to host.
Hence, as these important factors are well
thought of before further development, the
quality of code written often gets superior
and flawless.

7. You can also understand test-driven
development as a development process that
works backward to create software. Unlike
conventional development processes that
involved the writing of the code first, and
later test it, TDD requires the developer to
plan the test initially and then start writing
the code for it. For your better
understanding of test-driven development
in React, a ReactJS development company
will come of great help.
You may also like to read: Top 13 ReactJS
Best Practices and Tips to Follow in 2020

8. Why Should
You Use Test-
Driven
Development
for ReactJS
Application?

10. Writing a full plethora of code for front-end
application development using ReactJS is a
complex process to execute, and the same
process can be a little easy while doing it
from the back-end, or by reversing the
cycle. Hence, initially, it is essential to
somehow know and render the components
required for the project. Secondly, the
simulation of the same is done by user
interaction over a browser. Finally,
responding to the changes and drawing a
conclusion is possible by testing
asynchronous methods that can be
triggered by the click of a button

11. Importance of
Test-Driven
Development
for ReactJS

12. Test-driven development maybe a new
thing for a ReactJS development company,
but the trend has been existing within the
development communities for quite some
time now. Especially for some of the unique
importance, the same has in it. Come, let us
have a look at some of them.

13. The process of test-driven development for
ReactJS involves writing the test initially,
before writing the codes itself. Hence,
developers in this method consider all the
aspects from the test in their mind while
writing the final code for an application.
This implies that the highest test coverage,
including reports on all the bugs, flaws, and
imperfections, will get fixed when the final
codes are written. Also, the process of TDD
sometimes involves the improvement of
existing codes to make them more
organized, structured, and easier to
understand.
Exceptional Quality of
Codes Written

14. One of the most important reasons why this
method of test-driven development is
getting prominence with every passing day
and is coming more under the limelight is
primarily because of the significant amount
of development cost the process saves. As
the process starts with the creation of tests,
developers exactly know the amount of
time that the same will take. Also, as here it
is (test first, code second), developers can
even save time on reworking on the codes.
Thus, the overall process saves both time
and money.
Cost-Effective

15. The process of TDD implements as don’t
repeat yourself and keep it simple. So when
you hire ReactJS developer, these ethics of
TDD encourages him/her to write clean
codes. Writing cleaner codes also indicates
that debugging would be a lot less messy
and a less complicated process than all
other methods of development.
Debugging and TDD are
Convenient Together

16. Pros and Cons
of Test-Driven
Development

17. As said earlier, test-driven development is
the latest trend in development technology
through which ReactJS codes can be used to
develop applications. Having said that, this
method of development has some pros and
cons, which you are going to come across
now.
Pros of Test-Driven
Development
Test-driven development & continuous
refactoring, two of the many excellent XP
practices, have dramatically improved the
way softwares are built.Joshua Kerievsky

18. ★In this method, the developer has to plan
the test first, forcing the code to be more
crisp and clean. Hence, with TDD, you can
first understand what the project demands
and then implement an ideal design for the
same purpose.
★Test-driven development also makes the
developer create an ideal architecture for
the project that is modular in every aspect.
As various architectural issues tend to arise
in an earlier stage of development,
developers can thereby understand them
and fix them simultaneously.
★With test-driven development, it is easier
to maintain and refract the codes. It helps in
bringing clarity to the development process,
and also provides a shelter for the
developer. So, if there lies a need to refract
the code the developer has just written, it is
possible with TDD.

19. ★Refactoring the code written with TDD is
often a faster and easier method.
★Test-driven development encourages the
developer to pay even minute attention to
every small detail of the design.
★TDD also allows the developer to write
and test codes simultaneously. Hence, the
real advantage of this methodology will
only get clearer to you when you implement
it on your upcoming projects. A great
ReactJS development company can help
you get there.
You may also like to read: Top Reasons to
Use ReactJS in 2020

20. ➤ The tests are hard to write with TDD after
the unit test level crosses.
➤ In TDD, the suite itself has to be
maintained properly. Otherwise, it would
be hard to ascertain a test result from it.
➤ When you implement TDD for the first
time, it may slow down the development
process, but in the long run, it will come
with remarkable benefits.
➤ Like any other programming language,
test-driven development has a major
difference in just doing it and doing it
extremely well. Writing good tests through
this mode is almost similar to that of an art
form. Hence, hire a ReactJS developer who
is extraordinary with his skills.
Cons of Test-Driven
Development

21. Best Tools to
Support TDD
for ReactJS
Development

22. There are many ways through which you
can use TSS for ReactJS development.
However, to achieve the best results, you
have to use the best tools that are extremely
handy in working with the tests in ReactJS
are Jest, Enzyme, and Cypress.

23. Jest can come as a great and handy tool that
is open-source test framework. Introduced
by Facebook with the highest standards of
integration to ReactJS. Jest bundles, a
command-line tool with itself for the
execution of tests, which is similar to that of
Mocha and Jasmine. The system even allows
the developer to create mock functions with
it. Its zero-configuration provides a set of
custom Jest matchers that makes the
assertions easier to read.
Jest
Enzyme
If you are looking forward to a mechanism
to mount ReactJS component trees, then
this tool Enzyme will let you do so. It will
also help the developer in getting access to
the root of the code and set assertions
accordingly.

24. Developers looking forward to testing the
APIs built on ReactJS can do so with
Cypress. This powerful tool is an end-to-end
test framework that does all the clicking
work for the developers. Ideal for any
modern JavaScript library, and it is easier to
integrate as well.
Cypress

25. Few of the
Best Tips and
Practices to
follow for
ReactJS in
2020

26. Cypress

27. The World Wide Web is a constantly
evolving platform where developers from
every nook and corners of the world come
along to innovate and upgrade its working.
Similarly, with ReactJS in its top form, here
are some of the few best tips and practices,
that as a developer, you should implement
in all your upcoming ReactJS projects this
year.
Even if you are planning to outsource your
software development project to a ReactJS
development company, make sure that the
developer is following some of these
practices.

28. ✴ One Component Should Be Assigned for
One Function: ReactJS allows developers to
create components with various functions
that are huge. However, the smaller the
components are, the easier it gets to reuse
them across different projects. Hence,
developers should keep in mind to use a
single component for a single function only.
✴ Reusing the Components as much as
possible: Developers can build a single
component and assign them for a specific
function. However, while building new
components, developers should also
reutilize the already developed ones to
achieve a high level of consistency in their
projects.

29. ✴ Avoid using duplicate codes: The
developer should always keep in mind to
avoid duplicating codes and reusing them
as much as possible. Instead, examining the
codes and looking for parallel patterns can
be good practice for ReactJS in 2020.
✴ Combination of Context API: A great
practice for ReactJS is to combine context
APIs according to the higher order of the
components.
✴ Using Tools: Implementing powerful
tools like already mentioned above can be a
great way for developers to organize the
components of the project and sync them
accordingly.

30. Why Choose
ReactJS for
Web
Development
and
Development
Framework in
2020?

31. Well, the answer to this question is
limitless, yet we will try to short them down
as much as possible with a few reasons.
Apart from that, the real ReactJS experience
can be only experienced at its true form
when you will hire ReactJS developer for
your projects.
✸ It is simple and easy to learn and
implement.
✸ It is exceptional for reusing the
components.
✸ It is precisely very declarative.
✸ It slices down the abstract part of the
development process and refines it clean.
✸ It has a strong community of developers
with many powerful tools to use.

32. ✸ Job Portals
✸ eLearning Portals and development of
eLearning Modules
✸ Discount Coupon websites
✸ Personal resume builder
✸ Business review websites
Some of the Common
Applications of ReactJS
in 2020

33. I hope by now have realized the importance
of test-driven development for ReactJS
applications in 2020. Besides that, if your
business is looking to develop a high-
quality web application, you can always
fetch help from us as we are a
prominent ReactJS development
company and renowned for offering top-of-
the-line ReactJS development services. We
have various types of engagement model
that, as per your convenience, you can hire
ReactJS developers from us.
Final Words

34. Thank You