A Brief Overview on Functional Testing and Its Types

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• A Brief Overview on Functional Testing and Its
  Types
• Functional Testing is the most popular and
  widely-used form of Software Testing. As the name
  suggests, functional testing tests the
  effectiveness of different features and functions
  in a software system, application, or website.
  Functional Testing, which is simply what software
  does, is based either on predetermined
  requirements or a business use case.
• Nearly every type of Functional test follows the
  same logic. You need to determine the function,
  create an output based upon typical use cases,
  determine the input using requirements or
  specifications, then execute the tests and
  compare actual and expected results. There are
  many types of software and different stages of
  software development. Functional tests can be
  used at different points of the Software
  Development Lifecycle which include

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• Unit tests.
• This is the most popular type of Functional Test.
  It tests the individual components or units of
  the software before they are developed. It is
  important to perform Unit Tests frequently and
  early in development so that you can avoid more
  complicated issues later on.
• Integration tests.
• Integration Tests are closely related to Unit
  Tests. They test how the different software
  components interact to create a larger system.
  These tests can also be used to test how
  different software works together, such as an
  e-commerce module that integrates with a rules
  engine.
• Smoke Tests.
• These tests are used to determine if a particular
  type of softwares basic functions work according
  to spec. Smoke Tests, for example, can be used to
  verify that a websites login portal works
  correctly or that the input fields in a contact
  form match the outputs.

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• Sanity tests.
• Sanity Tests are used to verify that software
  features have not been changed.
• Regression tests.
• This version of Sanity Testing is more
  complicated because existing features are tested
  for new features. Sometimes, adding new features
  can cause problems with older functionality.
  Regression Tests can be automated using different
  Test Automation tools to verify that the software
  functions as intended.
• Usability tests.
• Also called UI or Interface Tests, Usability
  Testing is the final and most comprehensive type
  of Testing thats done on software using its user
  interface. Although Usability tests are more
  laborious and expensive than other types of
  Testing, they can be significantly simplified and
  more cost-effective with advanced tools.

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• Here are some of the many benefits that
  Functional Testing offers
• Functional testing simulates the real-world
  environment of the system. This is an exact
  replica of the product as it would look in its
  natural environment. Specifications are according
  to customer use. System specifications, Operating
  system, browsers, etc.
• It does not work with assumptions, ifs or buts
  about the systems structure.
• We can be sure to deliver high-quality products
  that satisfy customer needs and leave satisfied
  customers with our final results.
• It guarantees a bug-free product that meets all
  customer requirements.
• To reduce the risk of product failure, risk-based
  testing is used.
• If youre looking for the best Software testing
  outsourcing company, then TFT is the right
  partner for you. We offer a range of offshore
  testing services like Automation Testing
  Services, Manual Testing Services, Penetration
  Testing Services to help you make your software
  bug-free ready for release.

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