Basics of software testing

There are two basics of software testing: blackbox testing and whitebox testing.

Black box testing is a testing technique that ignores the internal mechanism of the system and focuses on the output generated against any input and execution of the system. It is also called functional testing.

White box testing is a testing technique that takes into account the internal mechanism of a system. It is also called structural testing and glass box testing.

Black box testing is often used for validation and white box testing is often used for verification.

Types of testing

There are many types of testing like

Unit Testing

Integration Testing

Functional Testing

System Testing

Stress Testing

Performance Testing

Usability Testing

Acceptance Testing

Regression Testing

Beta Testing

Unit testing is the testing of an individual unit or group of related units. It falls under the class of white box testing. It is often done by the programmer to test that the unit he/she has implemented is producing expected output against given input.

Integration testing is testing in which a group of components are combined to produce output. Also, the interaction between software and hardware is tested in integration testing if software and hardware components have any relation. It may fall under both white box testing and black box testing.

Functional testing is the testing to ensure that the specified functionality required in the systemrequirements works. It falls under the class of black box testing.

System testing is the testing to ensure that by putting the software in different environments (e.g., OperatingSystems) it still works. Systemtesting is done with full system implementation and environment. It falls under the class of black box testing.

Stress testing is the testing to evaluate how system behaves under unfavorable conditions. Testingis conducted at beyond limits of the specifications. It falls under the class of black box testing.

Performance testing is the testing to assess the speed and effectiveness of the system and to make sure it is generating results within a specified time as in performance requirements. It falls under the class of black box testing.

Usability testing is performed to the perspective of the client, to evaluate how the GUI is user-friendly? How easily can the client learn? After learning how to use, how proficiently can the client perform? How pleasing is it to use its design? This falls under the class of black box testing.

Acceptance testing is often done by the customer to ensure that the delivered product meets the requirements and works as the customer expected. It falls under the class of black box testing.

Regression testing is the testing after modification of a system, component, or a group of related units to ensure that the modification is working correctly and is not damaging or imposing other modules to produce unexpected results. It falls under the class of black box testing.

Beta testing is the testing which is done by end users, a team outside development, or publicly releasing full pre-version of the product which is known as beta version. The aim of beta testing is to cover unexpected errors. It falls under the class of black box testing.

Blackbox Testing

Whitebox Testing

Unit Testing

Integration Testing

Functional Testing

System Testing

Stress Testing

Performance Testing

Usability Testing

Acceptance Testing

Regression Testing

Beta Testing

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