Some Basic Facts About Functional Testing

Some Basic Facts about Functional Testing

Functional Testing is a process of testing applications/ softwares to ensure that they perform as per the requirement. It basically:         

Verifies that the system functions as per the client requirements as specified in the Requirement Specification document.

Checks the usability of the system and makes sure that all the route-finding functions work correctly.

Checks for exceptional handling and apt error message display.

Process of Testing: The testing process generally implicates the following steps: Categorizing the software requirements Arranging the combinations of test data for testing Computing the output to be generated with each input set Running the test cases and comparing the generated results with the expected results

Types: The different types of functional testing are as follows: 

Unit Testing: It is done to check each unit of code to ensure that each execution is functionally accurate. When software requirements change or are modified, these tests also get altered.

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Smoke Testing: It is a series of checking processes that are steered before the start of a detailed test. It validates the high level functional discrepancies of the application.

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Integration Testing: It is a software testing process in which individual software components are combined and tested as a group. It takes modules as its input that have been unit tested, groups them in larger aggregates, applies the defined tests in an integrated test plan to those aggregates, and provides as its output the integrated system ready for system testing.

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White Box Testing: This is based on the inter-structure of the system. It:  Validates the security holes in the code  Attests the incomplete paths in the code  Verifies the flow of data as per the requirement specification document.  Verifies 100% of the code in the application/ software.

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Black Box Test: Under this, the functionality of the system is tested with a blend of suitable and unsuitable data and the output is compared with the obligated results. This test focuses only on the input given and the output produced without knowing the implementation of the internal code. If case of any error or discrepancy, it is fixed and the system is tested over again.

Regression Test: This testing process ensures that the functionality or code modification in one part of the system has not disturbed the other functionality of the system. It is done repetitively and makes sure that the quality of the software is maintained.

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Acceptance Test: It assesses the usability of the system from the end user's viewpoint. These test cases are advanced from user requirements and are required to be defined in the System Development Life Cycle. This helps the developers to comprehend what kind of system they are developing.

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Globalization Testing: Also known as internationalized testing, it ensures that an application is efficient in diverse locations or in a grander geographical area. It validates if the application can be used all over the world and checks if it supports all kinds of language characters.

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Localization Testing: under this, the application is checked for its efficiency and performance in the local market or a relatively smaller geographical area than which is considered for a globalized application.

Tools: There are numerous tools available to execute functional testing services- JUnit is used for Java applications and SoapUI & Watir are used for testing web services.

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