The functional tests are usually the last tests that are carried out at the time of giving the pass to production to any type of software. This type of tests are also called “Black Box”, since the “Tester” focuses on analyzing the input and output data to define test cases that will be ready before the start of these. The tests are usually done manually, although there is the possibility of automating them with a series of scripts.

The importance of Functional Testingfunctional testing

In all good development there should be a time for unit tests, which should be developed in a much shorter time than the functional tests, since the system should be in a stable state. The unit tests allow us to find the most obvious and easy errors, and the functional tests should leave the software “polished” and ready to go into production.

All functional test is based on the requirements delivered for the development of a software. These are made through test cases whose purpose is to validate that the software meets the quality level required to enter production. Functional tests are important for the development of the project because they mostly cover the requirements and requests made by users, so that through these we can determine if what is being built meets the acceptance levels described by the client

Among the main benefits of this type of tests is the mitigation of the risk of production failures, the fulfillment of the objectives of the projects in terms of quality and expected results mainly, but also of terms and costs. In addition, the early identification of risks and deviations associated with quality, make it possible to avoid problems with suppliers, higher costs for the customer and finally generate confidence in the product or system under test.

How to run Functional Tests

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 To carry out the functional tests, it is necessary to follow a certain procedure in the following phases:

  • Analysis of requirements (Start): Corresponds to the review of the documentation delivered by the Development Project Manager, and that is the basis for preparing the test cases.
  • Elaboration of Test Plan: Corresponds to the generation of the document that will be delivered to the Project Manager where the considerations for the execution of the tests are identified (Environment, Data, Responsible, Risks, Metrics of Acceptance, etc.).
  • Elaboration of Test Cases: Corresponds to the design of the test cases that will be used to carry out the certification of the software validating that it complies with what is requested by the user.
  • Execution: Corresponds to the execution of the previously designed test cases. In addition, the detection of incidents in the application is reported to the Project Manager.
  • Elaboration Closing Report: Corresponds to the generation of the Closing Report with the final results of the software certification.

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