Functional Vs Non-Functional Testing Difference Between Them

We have to ensure that Testing Environment should always be similar to the Production environment, in this phase we have to install the build and manage the test machines. Recovery Testing – Recovery testing is a method to verify on how well a system is able to recover from crashes and hardware failures. The below pictorial representation gives us an idea about types of Dynamic Testing, Levels of Testing, etc.

what is non-functional test design techniques

Don’t wait until the last moment to get non-functional testing covered. Upgrade testing and installation testing verify that software will work properly on everyone’s machines. You can use volume tests to check if there’s any data loss, warning or error messages, or data storage issues when massive amounts of data are added to the product. OpenText™ UFT Digital Lab Amplify team productivity with an enterprise-level, end-to-end lab of real mobile devices and emulators. Don’t wait for application or module coding to be completed before you start creating test cases.

#5. Stress Testing

Ensure that your test environment consists of the same production environment setup, be it configuration, mentoring, or physical architecture. Make sure that the loading capability of the system is intact when the ‘n’ number of users leverage it simultaneously. For more on how to create a functional test, you can see a full guide on how to write an automated functional test for this example. It refers to a portion of the software system that can be converted for use in another application.

what is non-functional test design techniques

This use of scan chains, along with the clock control circuits are a related sub-discipline of logic design called “Design for Debug” or “Design for Debuggability”. Non-functional testing makes applications more usable and reliable. Unfortunately, it can often be rushed in an effort to meet release deadlines. Your product may have the most groundbreaking functionality, but it’s not worth much when paired with an interface that is impossible to navigate, riddled with bugs, or looks and feels outdated. The more UI elements your product has and the more ways there are for a user to interact with the product, the more complex and expensive this part of testing will be.

Integration testing

Integration testing determines whether combinations of individual software modules function properly together. Individual modules may already have passed independent tests, but when they are dependent on other modules to operate successfully, this kind of testing is necessary to ensure that all parts work together as expected. Dynamic Testing increases the cost of project/product because it does not start early in the software lifecycle and hence any issues fixed in later stages can result in an increase of cost. In Dynamic Testing, we execute the software, end to end, ensuring error free software which in turn increases the quality of a product and project. Software testing is an activity to investigate software under test in order to provide quality-related information to stakeholders. By contrast, QA is the implementation of policies and procedures intended to prevent defects from reaching customers.

what is non-functional test design techniques

Software test design techniques verify and validate the system functionality based on code execution. These techniques are a subset of dynamic testing and include active utilization of the software application to check whether the program works as expected. The dynamic testing techniques determine how the application responds to dynamic inputs in real time. It tests the system’s dynamic behavior under test by executing the code. The goal is to test the system functionality using dynamic inputs that may or may not be based on user requirements. It is performed by the software developer or engineer during the construction phase of the software development lifecycle.

#14. Portability testing

In the glossary we gather the main specialized terms that are frequently used in the working process. All meanings are written according to their generally accepted international interpretation. For convenience, you can use the search bar to simplify and speed up the search process. The procedure for developing or selecting test scenarios for non-functional testing based on the analysis of the specifications of the component or system in the separation from its internal structure.

what is non-functional test design techniques

You can perform load tests by running multiple applications simultaneously, subjecting a server to a high amount of traffic, or downloading a large quantity of files. These tests can find issues in software design and architecture performance. All of these non functional test types help to ensure that your product is fast, stable, scalable, reliable, and secure.

Characteristics of Non-functional testing

Unit tests for an API application might make requests against the system deployed in a testing environment and compare the responses against documentation. When the application deviates or regresses in functionality, application-wide functional tests often detect changes that unit tests don’t. One way to automate your functional tests is by using automated visual testing.

  • If the intervening logic contains state elements, then the issue of an exponentially exploding state space and state transition sequencing creates an unsolvable problem for test generation.
  • A user may be annoyed if performance degrades, but they may still be able to use the software application.
  • The dynamic testing techniques determine how the application responds to dynamic inputs in real time.
  • Code Coverage is normally done in Component and Integration Testing.
  • Plus, design techniques also increase test coverage with reduced test execution time.
  • One essential process in the non-functional testing category focuses on performance.

Visual testing allows you to test for visual bugs, which are otherwise extremely challenging to uncover with traditional functional testing tools. Visual testing would catch this bug and ensure functionality is not broken by a visual regression. All the tasks in dynamic testing techniques are dependent on the completion of the previous task in the testing process. Black Box Testing – Black Box Testing is a method of testing in which the internal structure/ code/design is NOT known to the tester. A common cause of software failure is a lack of its compatibility with other application software, operating systems , or target environments that differ greatly from the original .

Best Practices for Software Testing (no matter the Technique)

The related load testing activity of when performed as a non-functional activity is often referred to as endurance testing. Volume testing is a way to test software functions even when certain components increase radically in size. Stress testing is a way to test reliability under unexpected or rare workloads. Stability testing checks to see if the software can continuously function well in or above an acceptable period. These types of tests are usually written by developers as they work on code (white-box style), to ensure that the specific function is working as expected. One function might have multiple tests, to catch corner cases or other branches in the code.

The main aim of White Box testing is to check on how System is performing based on the code. It is mainly performed by the Developers or White Box Testers who has knowledge on the programming. In the case of IEEE standards, the specified requirements, mentioned in the definition of validation, are the set of problems, needs and wants of the stakeholders that the software must solve and satisfy. Such requirements are documented in a Software Requirements Specification . And, the products mentioned in the definition of verification, are the output artifacts of every phase of the software development process.

Performance Tests

The bakery offers immediate and scheduled address delivery, as well as a pick-up option. The bakery works in three cities – New York, Los Angeles, and Chicago. The equivalent class partitioning is a good solution for cases when you deal with a large volume of incoming data or numerous identical input variations. Otherwise, it might make sense to cover a product with tests more closely.

Mark O'Leary

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