This is the final post in the types of software testing series. You can view the other 40 types of software testing in the following post: 20 Types of Software Testing, and  2o More Types Of Software Testing.

Fuzz Testing

Fuzz testing or fuzzing is a software testing technique that involves testing with unexpected or random inputs. Software is monitored for failures or error messages that are presented due to the input errors.

Globalization Testing

Testing method that checks proper functionality of the product with any of the culture/locale settings using every type of international input possible. It is performed by the testing team.

Gorilla Testing

This type of software testing is done by software testing team, has a scary name though ?. Objective of Gorilla Testing is to exercise one or few functionality thoroughly or exhaustively by having multiple people test the same functionality.

Gray Box Testing

A combination of Black Box and White Box testing methodologies: testing a piece of software against its specification but using some knowledge of its internal workings. It can be performed by either development or testing teams.

GUI (Graphical User Interface) testing

This type of software testing is aimed at testing the software GUI (Graphical User Interface) of the software meets the requirements as mentioned in the GUI mockups and Detailed designed documents.

Hybrid Integration Testing

Testing technique which combines top-down and bottom-up integration techniques in order leverage benefits of these kind of testing. It is usually performed by the testing teams.


Integration Testing

Integration testing is one of the important types of software testing. Once the individual units or components are tested by developers as working then testing team will run tests that will test the connectivity among these units/component or multiple units/components. There are different approaches for Integration testing namely, Top-down integration testing, Bottom-up integration testing.

Testing of integrated modules to verify combined functionality after integration. Modules are typically code modules, individual applications, client and server applications on a network, etc. This type of testing is especially relevant to client/server and distributed systems.

Interface Testing

Software provides support for one or more interfaces like “Graphical user interface”, “Command Line Interface” or “Application programming interface” to interact with its users or other software. Interfaces serves as medium for software to accept input from user and provide result. Approach for interface testing depends on the type of the interface being testing like GUI or API or CLI.

Internationalization Testing

Internationalization testing is a type of testing that is performed by software testing team to check the extent to which software can support Internationalization i.e., usage of different languages, different character sets, double byte characters etc., For e.g.: Gmail, is a web application that is used by people all over work with different languages, single by or multi byte character sets.

Keyword-driven Testing

Keyword driver testing is more of a automated software testing approach than a type of testing itself. Keyword driven testing is known as action driven testing or table driven testing.

Load Testing

Load testing is a type of non-functional testing. Load testing is done to check the behavior of the software under normal and over peak load conditions.

Localization Testing

In this type of testing, software is expected to adapt to a particular locale, it should support a particular locale/language in terms of display, accepting input in that particular locale, display, font, date time, currency etc., related to a particular locale. For example many web applications allow choice of locale like English, French, German or Japanese. So once locale is defined or set in the configuration of software, software is expected to work as expected with a set language/locale.

Negative Testing

This type of software testing approach, which calls out the “attitude to break”, these are functional and non-functional tests that are intended to break the software by entering incorrect data like incorrect date, time or string or upload binary file when text files supposed to be upload or enter huge text string for input fields etc. It is also a positive test for an error condition.

Non functional testing

Software are built to fulfill functional and non-functional requirements, non-functional requirements like compatibility testing, compliance testing, localization testing, usability testing, volume testing etc., that are carried out for checking non-functional requirements.

Pair Testing

A software testing technique that can be done by software testers, developers or Business analysts (BA). As the name suggests, two people are paired together, one to test and other to monitor and record test results. Pair testing can also be performed in combination of tester-developer, tester-business analyst or developer-business analyst combination. Combining testers and developers in pair testing helps to detect defects faster, identify root cause, fix and test the fix.

Parallel Testing

Testing technique which has the purpose to ensure that a new application which has replaced its older version has been installed and is running correctly.

Performance Testing

Unlike Functional testing, Performance testing is done to check non-functional requirements. Performance testing checks how well software works in anticipated and peak workloads. There are different variations or sub types of performance like load testing, stress testing, volume testing, soak testing and configuration testing.

Penetration Testing

Penetration testing is done to tests how secure software and its environments (Hardware, Operating system and network) are when subject to attack by an external or internal intruder. Intruder can be a human/hacker or malicious programs. Pentest uses methods to forcibly intrude (by brute force attack) or by using a weakness (vulnerability) to gain access to a software or data or hardware with an intent to expose ways to steal, manipulate or corrupt data, software files or configuration. Penetration Testing is a way of ethical hacking, an experienced Penetration tester will use the same methods and tools that a hacker would use but the intention of Penetration tester is to identify vulnerability and get them fixed before a real hacker or malicious program exploits it.

Qualification Testing

Testing against the specifications of the previous release, usually conducted by the developer for the consumer, to demonstrate that the software meets its specified requirements.

Recovery testing

Testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.

Regression Testing

A type of software testing that is carried out by software testers as functional regression tests and developers as Unit regression tests. Objective of regression tests are to find defects that got introduced to defect fixes or introduction of new features.

Risk based Testing

In risk based testing, requirements and functionality of software to be tested are prioritized as Critical, High, Medium and low. In this approach, all critical and High priority tests are tested and them followed by Medium. Low priority or low risk functionality are tested at the end or may not based on the time available for testing.

Sanity Testing

Sanity testing is a quick evaluation of the software, environment, network, external systems are up & running, software environment as a whole is stable enough to proceed with extensive testing. Sanity tests are narrow and most of the time sanity tests are not documented.

Scalability Testing

Scalability test is not focused on just one or few functionality of the software instead performance of software as a whole. The objective of scalability testing is to test the ability of the software to scale up with increased users, increased transactions, increase in database size. It is not necessary that software’s performance increases with increase in hardware configuration, scalability tests helps to find out how much more workload the software can support.

Security Testing

The objective of security testing is to secure the software to external or internal threats from humans and malicious programs. Security testing basically checks, how good is software’s authorization mechanism, how strong is authentication, how software maintains confidentiality of the data, how does the software maintain integrity of the data, what is the availability of the software in an event of an attack on the software by hackers and malicious programs is for Security testing requires good knowledge of application, technology, networking, security testing tools.

Smoke testing

A type of testing to check if the new build provided by development team is stable enough to carry out further testing. Smoke testing is intended to find “show stopper” defects that can prevent testers from testing the application in detail.

Stability Testing

Stability testing focuses on testing how stable software is when it is subject to loads at acceptable levels, peak loads, loads generated in spikes, with more volumes of data to be processed.

Stress Testing

A type of performance testing, in which software is subjected to peak loads and even to a break point to observe how the software would behave at breakpoint.

Thread Testing

A variation of top-down testing technique where the progressive integration of components follows the implementation of subsets of the requirements.

Unit testing

Unit testing follows white box testing approach where developer will test units of source code like statements, branches, functions, methods OR class, interface in OOP.

Usability testing

The objective of usability testing is to allow end users to use the software, observe their behavior, their emotional response and collect their feedback on how the software can be made more user friendly.

User Acceptance testing (UAT )

User Acceptance testing is a must for any project; it is performed by clients/end users of the software. User Acceptance testing allows SMEs (Subject matter experts) from client to test the software with their actual business or real-world scenarios and to check if the software meets their business requirements.

White box Testing

White box testing is also known as clear box testing, transparent box testing and glass box testing. White box testing is a software testing approach, which intends to test software with knowledge of internal working of the software. White box testing approach is used in Unit testing which is usually performed by software developers. White box testing intends to execute code and test statements, branches, path, decisions and data flow within the program being tested.