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Functional testing is part of the process of verifying that the behavior of the system conforms to the originally stated functional requirements. The purpose of functional testing is to confirm that the system has been implemented by its functional requirements and is fully operational.
Prerequisites include:
- Security
- The norms
- interoperability
- usefulness
- exactness
For functional testing, we develop a special document – the Application Functional Testing Program and Methodology (API). The FTP contains a list of software product testing scenarios (test cases) with a detailed description of the steps. The scenario steps describe all the possible user actions and the expected result of the functional testing services‘ response to these actions. The program and test methodology simulate the operation of an application, mobile or cloud application in real mode. Test scenarios are built based on analysis of operations that future users of the software product or system may perform. Depending on the complexity of the application, testing can be performed at different levels:
- Component (modular) – testing of individual components of the software product, focusing on their specificity, purpose, and functionality;
- Integration testing is conducted after component testing and is aimed at identifying defects in the interaction of various subsystems at the level of control flows and data exchange.
System components can be treated as separate subsystems. Within each subsystem, individual components can be identified for which component and integration testing are performed. For complex software products, a hierarchical structure of the testing process is formed, at each level of which a certain part of the software complex is the object of testing.
Stages of functional testing
Among the main stages of functional testing should be the following:
- PMI – development of an application feature test program and methodology (FTP). PMI contains a list of test scenarios based on the documents about the test object: functional and business requirements, terms of reference, and design passport.
- Tests – usually functional software testing is done manually, based on pre-designed test scripts that enter all found bugs into the bug-tracking system.
- Report – during this phase, our experts develop and coordinate reports on the test with all detected defects and recommendations for system optimization.
Functional testing tools
Use our experience in functional testing to reduce the operational risks associated with the QA process in development. We are guided by modern methodologies to create the software quality assurance process: HP QM, RUP, ITIL, COBIT. We use powerful solutions from market leaders to build functional testing processes: HP Application Lifecycle Management, Rational Quality Manager, MS Team Foundation Server 2019, Jira, or Redmine. We perform all kinds of functional testing from Smoke testing to black-box testing
Types of functional testing
- Functionality Check – verifies that the software meets the requirements of the specification. Full testing is performed or only basic functionality is tested;
- Regression testing – testing product functionality after fixing bugs or implementing new functionality;
- Interface testing – checking the operability of interface elements and testing the functionality of forms and process sequences;
- Functionality testing – verifying that the software meets the requirements of the specification. Full testing is performed or only basic functionality is tested;
- Regression testing – testing product functionality after fixing bugs or implementing new functionality;
- Interface testing – checking the operability of interface elements and testing the functionality of forms and process sequences;
We carry out a range of work of any complexity and have a laboratory, qualified specialists, and our tools for development and test work. We provide a full range of services for functional software testing – manual and automated, at all stages of the software life cycle.
Functional testing plays an important role in software quality assurance, and the requirements for a software product are not limited to functional specifications. To obtain a quality software product, a set of quality assurance measures covering the various characteristics of the application, taking into account their interdependence, is required. Functional testing is inseparable from user interface testing, performance testing, and security testing. That is why we offer a comprehensive approach and service for software quality assurance.
The benefits of functional testing
- Functional testing of applications fully simulates the actual use of the system;
- Timely detection of system software errors helps to avoid many problems when working with it in the future;
- Significant savings and risk reduction by fixing bugs earlier in the software life cycle;
Conclusion
This is a method of system testing in software testing which ensures that the system works according to the functionality provided in the company document. The purpose of this test is to verify that the scheme works.
