What is Software Testing?

1
Devstringx Tecnologies
Devstringx Technologies is an award-winning
Software testing company that provides software
testing services in India and all over the world.
As one of the emerging independent software
testing agencies in India, and one of the most
award-winning in the United States, Anvil prides
itself on its ability to delight customers and
consistently generate measurable results. While
Anvil specializes in software testing, product
testing, web application testing, agile testing,
automation testing, functional testing, etc. we
provide a full-service approach to integrated
software testing. To know more about us, Kindly
visit our website.
2
What is Software Testing
Software Testing is a method to check whether the
actual software product matches expected
requirements and to ensure that software product
is bug free. It involves execution of
software/system components using manual or
automated tools to evaluate one or more
properties of interest. The purpose of software
testing is to identify errors, gaps or missing
requirements in contrast to actual
requirements. Some prefer saying Software
testing definition as a White Box and Black Box
Testing. In simple terms, Software Testing means
the Verification of Application Under Test (AUT).
This Software Testing course introduces testing
software to the audience and justifies the
importance of software testing.
3
History of Software Testing
Software testing is a process that helps ensure
the quality of software products. It started
alongside the development of software, which
began just after World War II. Computer scientist
Tom Kilburn is credited with writing the first
piece of software, which was unveiled on June 21,
1948, at the University of Manchester in England.
It performed mathematical calculations using
machine code instructions. The development of
software testing began shortly after the second
world war when computer scientist Tom Kilburn
created the first piece of software. This
software debuted on June 21, 1948, at the
University of Manchester in England and was able
to perform mathematical calculations using
machine code instructions.
4
Types of Software Testing
Manual vs. Automated Testing It's important to
make the distinction between manual and automated
tests. Manual testing is done in person, by
clicking through the application or interacting
with the software and APIs with the appropriate
tooling. This is very expensive since it requires
someone to setup an environment and execute the
tests themselves, and it can be prone to human
error as the tester might make typos or omit
steps in the test script.
5
Types of Tests

• Unit tests
• Integration tests
• Functional tests
• End-to-end tests
• Acceptance testing
• Performance testing
• Smoke testing

6
Unit tests - Unit tests are very low level and
close to the source of an application. They
consist in testing individual methods and
functions of the classes, components, or modules
used by your software. Unit tests are generally
quite cheap to automate and can run very quickly
by a continuous integration server. Integration
tests - Integration tests verify that different
modules or services used by your application work
well together. For example, it can be testing the
interaction with the database or making sure that
microservices work together as expected. These
types of tests are more expensive to run as they
require multiple parts of the application to be
up and running. Functional tests - Functional
tests focus on the business requirements of an
application. They only verify the output of an
action and do not check the intermediate states
of the system when performing that action.
7
End-to-end tests - End-to-end testing replicates
a user behavior with the software in a complete
application environment. It verifies that various
user flows work as expected and can be as simple
as loading a web page or logging in or much more
complex scenarios verifying email notifications,
online payments, etc... End-to-end tests are
very useful, but they're expensive to perform and
can be hard to maintain when they're automated.
It is recommended to have a few key end-to-end
tests and rely more on lower level types of
testing (unit and integration tests) to be able
to quickly identify breaking changes. Acceptance
testing - Acceptance tests are formal tests that
verify if a system satisfies business
requirements. They require the entire application
to be running while testing and focus on
replicating user behaviors. But they can also go
further and measure the performance of the system
and reject changes if certain goals are not met.
8
Performance testing - Performance tests evaluate
how a system performs under a particular
workload. These tests help to measure the
reliability, speed, scalability, and
responsiveness of an application. For instance, a
performance test can observe response times when
executing a high number of requests, or determine
how a system behaves with a significant amount of
data. It can determine if an application meets
performance requirements, locate bottlenecks,
measure stability during peak traffic, and more.
Smoke testing - Smoke tests are basic tests
that check the basic functionality of an
application. They are meant to be quick to
execute, and their goal is to give you the
assurance that the major features of your system
are working as expected. Smoke tests can be
useful right after a new build is made to decide
whether or not you can run more expensive tests,
or right after a deployment to make sure that
they application is running properly in the newly
deployed environment.
9
Why Software Testing is Important
Software testing is an important aspect of
software development that cannot be overlooked.
Late software delivery or defects can ruin a
company's reputation with customers, leading to
frustration and a loss of business. In some
cases, a bug or system defect can cause major
malfunctions or damage other interconnected
systems.
10
This content is written by Harsha Yadav,
Harsha Yadav works as Software Test Engineer in
Devstringx Technologies for the last 02 Years.
She has 04 years of experience in manual
automation software testing. She has worked on
two different projects with one domains Health.
She believes in sharing her knowledge through her
blog.
11
Contact Us
USA Address 16192, Coastal Highway, Lewes, DE
- 19958, USA Mobile No - 1 650 209 7815 Mail
I'd- info_at_devstringx.com Website -
www.devstringx.com
India Address - G - 32, Sector-63, Noida,
Up, India, 201301 Mobile No -91 995 878
1896 Mail I'd- info_at_devstringx.com Website
- www.devstringx.com