There
are different methods that can be used for software testing. This blog briefly
describes the methods available.
Black
box testing
The
technique of testing without having any knowledge of the interior workings of
the application is called black-box testing. The tester is oblivious to the
system architecture and does not have access to the source code. Typically,
while performing a black-box test, a tester will interact with the system's user
interface by providing inputs and examining outputs without knowing how and
where the inputs are worked upon.
The following table lists the advantages and disadvantages of black-box testing. Want to learn concepts from professionals see QA testing training by Learn IT
Training.
White box testing
White-box
testing is the detailed investigation of internal logic and structure of the
code. White-box testing is also called glass
testing or open-box testing.
In order to perform white-box
testing on an application, a tester needs to know the internal workings of the
code.
The
tester needs to have a look inside the source code and find out which
unit/chunk of the code is behaving inappropriately.
The
following table lists the advantages and disadvantages of white-box testing.
Grey box testing
Grey-box
testing is a technique to test the application with having a limited knowledge
of the internal workings of an application. In software testing, the phrase the
more you know, the better carries a lot of weight while testing an application.
Mastering
the domain of a system always gives the tester an edge over someone with
limited domain knowledge. Unlike black-box testing, where the tester only tests
the application's user interface; in grey-box testing, the tester has access to
design documents and the database. Having this knowledge, a tester can prepare
better test data and test scenarios while making a test plan.
Comparison
of testing methods:
The
following table lists the points that differentiate black-box testing, grey-box
testing, and white-box testing. Software testing has advanced level tools
selenium one among them selenium is free open source automated testing suite
for web applications across different browsers and platforms. Learn Selenium training by experts.
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