RSS

Software Testing Levels, Types, Terms and Definitions

08 Jun

Testing Levels and Types
There are basically three levels of testing i.e. Unit Testing, Integration Testing and System Testing. Various types of testing come under these levels.

Unit Testing:
To verify a single program or a section of a single program

Integration Testing:
To verify interaction between system components
Prerequisite: unit testing completed on all components that compose a system

System Testing:
To verify and validate behaviors of the entire system against the original system objectives
Software testing is a process that identifies the correctness, completeness, and quality of
software.

kevalshah.in


Following is a list of various types of software testing and their definitions in a random order:

• Formal Testing: Performed by test engineers

• Informal Testing: Performed by the developers

• Manual Testing: That part of software testing that requires human input, analysis, or evaluation.

• Automated Testing: Software testing that utilizes a variety of tools to automate the testing process. Automated testing still requires a skilled quality assurance professional with knowledge of the automation tools and the software being tested to set up the test cases.

• Black box Testing: Testing software without any knowledge of the back-end of the system,structure or language of the module being tested. Black box test cases are written from a definitive source document, such as a specification or requirements document.

• White box Testing: Testing in which the software tester has knowledge of the back-end, structure and language of the software, or at least its purpose.

• Unit Testing: Unit testing is the process of testing a particular complied program, i.e., a window, a report, an interface, etc. independently as a stand-alone component/program. The types and degrees of unit tests can vary among modified and newly created programs. Unit testing is mostly performed by the programmers who are also responsible for the creation of the necessary unit test data.

• Incremental Testing: Incremental testing is partial testing of an incomplete product. The goal of incremental testing is to provide an early feedback to software developers.

• System Testing: System testing is a form of black box testing. The purpose of system testing is to validate an application’s accuracy and completeness in performing the functions as designed.

• Integration Testing: Testing two or more modules or functions together with the intent of finding interface defects between the modules/functions.

• System Integration Testing: Testing of software components that have been distributed across multiple platforms (e.g., client, web server, application server, and database server) to produce failures caused by system integration defects (i.e. defects involving distribution and back-office integration).

• Functional Testing: Verifying that a module functions as stated in the specification and establishing confidence that a program does what it is supposed to do.

• End-to-end Testing: Similar to system testing – testing a complete application in a situation that mimics real world use, such as interacting with a database, using network communication, or interacting with other hardware, application, or system.

• Sanity Testing: Sanity testing is performed whenever cursory testing is sufficient to prove the application is functioning according to specifications. This level of testing is a subset of regression testing. It normally includes testing basic GUI functionality to demonstrate connectivity to the database, application servers, printers, etc.

• Regression Testing: Testing with the intent of determining if bug fixes have been successful and have not created any new problems.

• Acceptance Testing: Testing the system with the intent of confirming readiness of the product and customer acceptance. Also known as User Acceptance Testing.

• Adhoc Testing: Testing without a formal test plan or outside of a test plan. With some projects this type of testing is carried out as an addition to formal testing. Sometimes, if testing occurs very late in the development cycle, this will be the only kind of testing that can be performed – usually done by skilled testers. Sometimes ad hoc testing is referred to as exploratory testing.

• Configuration Testing: Testing to determine how well the product works with a broad range of hardware/peripheral equipment configurations as well as on different operating systems and software.

• Load Testing: Testing with the intent of determining how well the product handles competition for system resources. The competition may come in the form of network traffic, CPU utilization or memory allocation.

• Stress Testing: Testing done to evaluate the behavior when the system is pushed beyond the reaking point. The goal is to expose the weak links and to determine if the system manages to recover gracefully.

kevalshah.in

• Performance Testing: Testing with the intent of determining how efficiently a product handles a variety of events. Automated test tools geared specifically to test and fine-tune performance are used most often for this type of testing.

• Usability Testing: Usability testing is testing for ‘user-friendliness’. A way to evaluate and measure how users interact with a software product or site. Tasks are given to users and observations are made.

• Installation Testing: Testing with the intent of determining if the product is compatible with a variety of platforms and how easily it installs.

• Recovery/Error Testing: Testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.

• Security Testing: Testing of database and network software in order to keep company data and resources secure from mistaken/accidental users, hackers, and other malevolent attackers.

• Penetration Testing: Penetration testing is testing how well the system is protected against unauthorized internal or external access, or willful damage. This type of testing usually requires sophisticated testing techniques.

• Compatibility Testing: Testing used to determine whether other system software components such as browsers, utilities, and competing software will conflict with the software being tested.

• Exploratory Testing: Any testing in which the tester dynamically changes what they’re doing for test execution, based on information they learn as they’re executing their tests.

• Comparison Testing: Testing that compares software weaknesses and strengths to those of competitors’ products.

• Alpha Testing: Testing after code is mostly complete or contains most of the functionality and prior to reaching customers. Sometimes a selected group of users are involved. More often this testing will be performed in-house or by an outside testing firm in close cooperation with the software engineering department.

• Beta Testing: Testing after the product is code complete. Betas are often widely distributed or even distributed to the public at large.

• Gamma Testing: Gamma testing is testing of software that has all the required features, but it did not go through all the in-house quality checks.

• Mutation Testing: A method to determine to test thoroughness by measuring the extent to which the test cases can discriminate the program from slight variants of the program.

• Independent Verification and Validation (IV&V): The process of exercising software with the intent of ensuring that the software system meets its requirements and user expectations and doesn’t fail in an unacceptable manner. The individual or group doing this work is not part of the group or organization that developed the software.

• Pilot Testing: Testing that involves the users just before actual release to ensure that users become familiar with the release contents and ultimately accept it. Typically involves many users, is conducted over a short period of time and is tightly controlled. (See beta testing)

• Parallel/Audit Testing: Testing where the user reconciles the output of the new system to the output of the current system to verify the new system performs the operations correctly.

• Glass Box/Open Box Testing: Glass box testing is the same as white box testing. It is a testing approach that examines the application’s program structure, and derives test cases from the application’s program logic.

• Closed Box Testing: Closed box testing is same as black box testing. A type of testing that considers only the functionality of the application.

• Bottom-up Testing: Bottom-up testing is a technique for integration testing. A test engineer creates and uses test drivers for components that have not yet been developed, because, with bottom-up testing, low-level components are tested first. The objective of bottom-up testing is to call low-level components first, for testing purposes.

• Smoke Testing: A random test conducted before the delivery and after complete testing.

–>Testing Terms

kevalshah.in

• Bug: A software bug may be defined as a coding error that causes an unexpected defect, fault or flaw. In other words, if a program does not perform as intended, it is most likely a bug.

• Error: A mismatch between the program and its specification is an error in the program.

• Defect: Defect is the variance from a desired product attribute (it can be a wrong, missing or extra data). It can be of two types – Defect from the product or a variance from customer/user expectations. It is a flaw in the software system and has no impact until it affects the user/customer and operational system. 90% of all the defects can be caused by process problems.

• Failure: A defect that causes an error in operation or negatively impacts a user/ customer.

• Quality Assurance: Is oriented towards preventing defects. Quality Assurance ensures all parties concerned with the project adhere to the process and procedures, standards and templates and test readiness reviews.

• Quality Control: quality control or quality engineering is a set of measures taken to ensure that defective products or services are not produced, and that the design meets performance requirements.

Verification: Verification ensures the product is designed to deliver all functionality to the customer; it typically involves reviews and meetings to evaluate documents, plans, code, requirements and specifications; this can be done with checklists, issues lists, walkthroughs and inspection meetings.
• Validation: Validation ensures that functionality, as defined in requirements, is the intended behavior of the product; validation typically involves actual testing and takes place after verification are completed.

kevalshah.in
Advertisements
 

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

265 responses to “Software Testing Levels, Types, Terms and Definitions

  1. Aline Chueng

    June 30, 2012 at 12:33 PM

    I do not even know how I ended up here, but I thought this post was good. I do not know who you are but certainly you are going to a famous blogger if you aren’t already 😉 Cheers!

     
  2. Jonna Kofler

    June 30, 2012 at 12:50 PM

    There is evidently a bundle to realize about this. I feel you made certain good points in features also.

     
  3. Raphael Arlia

    June 30, 2012 at 1:03 PM

    You made some clear points there. I looked on the internet for the subject and found most guys will consent with your site.

     
  4. Brooks Quiroz

    June 30, 2012 at 2:27 PM

    I like the helpful info you provide in your articles. I will bookmark your weblog and check again here regularly. I’m quite sure I will learn a lot of new stuff right here! Best of luck for the next!

     
  5. Vito Slightam

    June 30, 2012 at 2:44 PM

    I think this is among the most significant information for me. And i’m glad reading your article. But want to remark on few general things, The website style is wonderful, the articles is really nice : D. Good job, cheers

     
  6. Heriberto Sindel

    June 30, 2012 at 2:55 PM

    You really make it seem so easy with your presentation but I find this matter to be actually something which I think I would never understand. It seems too complicated and extremely broad for me. I am looking forward for your next post, I will try to get the hang of it!

     
  7. Lee Thometz

    June 30, 2012 at 4:26 PM

    This is very interesting, You’re a very skilled blogger. I’ve joined your feed and look forward to seeking more of your great post. Also, I have shared your web site in my social networks!

     
  8. Florentino Forgette

    July 11, 2012 at 3:18 PM

    I’ve been surfing online more than 3 hours today, yet I never found any interesting article like yours. It is pretty worth enough for me. In my opinion, if all site owners and bloggers made good content as you did, the net will be much more useful than ever before.

     
  9. Burton Beland

    July 11, 2012 at 5:32 PM

    Undeniably believe that which you said. Your favorite justification appeared to be on the web the simplest thing to be aware of. I say to you, I definitely get irked while people think about worries that they just do not know about. You managed to hit the nail upon the top as well as defined out the whole thing without having side-effects , people can take a signal. Will probably be back to get more. Thanks

     
  10. https://www.libanonchat.org/

    December 23, 2012 at 4:03 AM

    When I originally commented I clicked the “Notify me when new comments are added” checkbox and now each time
    a comment is added I get three e-mails with the same comment.
    Is there any way you can remove people from that service?
    Thanks!

     
  11. Haarausfall Durch

    February 23, 2013 at 8:43 PM

    What’s up to every one, because I am actually eager of reading this weblog’s post to be updated daily.
    It contains fastidious information.

     
  12. https://sites.google.com

    July 22, 2013 at 3:41 PM

    I’m impressed, I must say. Rarely do I encounter a blog that’s both equally educative and amusing, and
    without a doubt, you have hit the nail on the head.
    The problem is an issue that too few folks are speaking intelligently about.

    I’m very happy that I came across this during my search for something concerning this.

     
  13. Skiers Peak Coupon Codes

    July 28, 2013 at 12:07 PM

    I like the helpful info you provide in your articles.
    I will bookmark your weblog and check again here frequently.
    I am quite sure I’ll learn a lot of new stuff right here! Best of luck for the next!

     
  14. TMart Coupon Code

    July 29, 2013 at 4:55 PM

    I am actually delighted to read this blog posts which carries lots of useful information,
    thanks for providing these kinds of statistics.

     

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s

 
%d bloggers like this: