Different Software Testing Techniques

• Black box testing - Internal system design is not considered in this type of testing. Tests are based on requirements and functionality.

• White box testing - This testing is based on knowledge of the internal logic of an application’s code. Also known as Glass box Testing. Internal software and code working should be known for this type of testing. Tests are based on coverage of code statements, branches, paths, conditions.

• Unit testing - Testing of individual software components or modules. Typically done by the programmer and not by testers, as it requires detailed knowledge of the internal program design and code. may require developing test driver modules or test harnesses.

• 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.

• Functional testing - This type of testing ignores the internal parts and focus on the output is as per requirement or not. Black-box type testing geared to functional requirements of an application.

• Sanity testing - Testing to determine if a new software version is performing well enough to accept it for a major testing effort. If application is crashing for initial use then system is not stable enough for further testing and build or application is assigned to fix.

• Regression testing - Testing the application as a whole for the modification in any module or functionality. Difficult to cover all the system in regression testing so typically automation tools are used for these testing types.

• Acceptance testing -Normally this type of testing is done to verify if system meets the customer specified requirements. User or customer do this testing to determine whether to accept application.

• Load testing - Its a performance testing to check system behavior under load. Testing an application under heavy loads, such as testing of a web site under a range of loads to determine at what point the system’s response time degrades or fails.

• Performance testing - Term often used interchangeably with ’stress’ and ‘load’ testing. To check whether system meets performance requirements. Used different performance and load tools to do this.

• Alpha testing - In house virtual user environment can be created for this type of testing. Testing is done at the end of development. Still minor design changes may be made as a result of such testing.

• Beta testing - Testing typically done by end-users or others. Final testing before releasing application for commercial purpose.

Happy Testing!!!


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Just a brief introduction about software testing!

There are many published definitions of software testing, however, all of these definitions Boil down to essentially the same thing: software testing is the process of executing Software in a controlled manner, in order to answer the question "Does the software Behave as specified?"

Software testing is often used in association with two Terms:

• Verification: It is the checking or testing of items, including software, for conformance and consistency with an associated specification. Software testing is just one kind of verification, which also uses techniques such as reviews, analysis, inspections and walkthroughs.

• Validation: Validation is the process of checking that what has been specified is what the User actually wanted.

Or in Layman's Language we can say it as

• Validation: Are we doing the right job?

• Verification:Are we doing the job right?

What is a BUG?

The term bug is often used to refer to a problem or fault in a computer. There are software bugs and hardware bugs. The term originated in the United States, at the time when pioneering computers were built out of valves, when a series of previously inexplicable faults were eventually traced to moths flying about inside the computer.

A couple of URL's that could come in as handy:

http://en.wikipedia.org/wiki/Software_testing

http://en.wikipedia.org/wiki/Scenario_test

http://en.wikipedia.org/wiki/Test_suite

http://en.wikipedia.org/wiki/Software_engineering

http://en.wikipedia.org/wiki/Test_script

http://en.wikipedia.org/wiki/Regression_testing


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