CSC440 Chapter 8: Software Testing {Terms} (Software Engineering, Sommerville, 10th Edition) edit

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Development Testing

- AKA Defect Testing, the system is tested to discover bugs and defects - Includes all testing activities that are carried out by the team developing the system - Testing activities include Unit testing, Component testing, and System testing

Elements of: User Testing

- Alpha - Beta - Acceptance

Elements of: Test Driven Development

- Identify - Write - Run - Implement - Repeat

Requirements Based Testing

- Part of Release Testing - Involves examining each requirement and developing a test or tests for it. - Testing what was written up for and documented for the system. - It is validation rather than defect testing: you are trying to demonstrate that the system has properly implemented its requirements.

Performance Testing

- Part of release testing - AKA Stress Testing - Concerned with both demonstrating that the system meets its requirements and discovering problems and defects within the system. - You are testing the system by making demands that are outside the design limitations.

Scenario Testing

- Part of release testing. - An approach to release testing whereby you devise typical scenarios of use and use these scenarios to develop test cases for the system.

User Testing

- Potential users of a system operate the system in their own environment.

Release Testing

- Process of testing a particular release of a system that is intended for use outside of the development team - A separate testing team tests a complete version of the system - Primary goal is to convince the supplier of the system that it is good enough for use. - Usually a black-box testing process where tests are only derived from the system specification.

Elements of: Release Testing

- Requirements - Scenario - Performance

System Testing

- Stage of Development testing - Involves integrating components to create a version of the system and then testing the integrating system - Focus is testing the interactions between components - Checks to ensure that components are compatible, interact correctly, and transfer the right data at the right time. - Might include stress testing

Unit Testing

- Stage of Development testing - Process of testing individual components in isolation. - It is a defect testing process - Components to be tested could be individual functions or methods, object classes, or composite components with defined interfaces used to access their functionality.

Component Interface Testing

- Stage of Development testing - Software components are often composite components that are made up of several interacting objects accessed through defined component interfaces. - This type of testing should then focus on showing that the interface behaves according to its specification. - Objectives are to detect faults due to interface errors or invalid assumptions about interfaces

Beta Testing

- Stage of user testing - A release of the software is made available to users to allow them to experiment and to raise problems that they discover with the system developers.

Acceptance Testing

- Stage of user testing - Customers test a system to decide whether or not it is ready to be accepted from the system developers and deployed in the customer environment. Primarily for custom systems.

Alpha Testing

- Stage of user testing - Users of the software work with the development team to test the software at the developer's site.

Guideline-based Testing

- Test case selection strategy for Unit testing - A set of rules are used to choose test cases - These rules reflect previous experience of the kinds or errors that programmers often make when developing components.

Partition Testing

- Test case selection strategy for Unit testing - Identify groups of inputs that have common characteristics and should be processed in the same way. - Test cases are chosen from these groups

Elements of: Development Testing

- Unit - Component - System

Verification & Validation

- Verification: "Are we building the product right?" - Validation: "Are we building the right product?"


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