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Test-driven development - Wikipedia, the free encyclopedia
Test-driven development ( TDD ) is a software development process that relies on the repetition of a very short development cycle: first the developer writes a failing automated test case that defines a desired improvement or new function, then produces code to pass that test and finally refactors the new code to acceptable standards. Kent Beck , who is credited with having developed or 'rediscovered' the technique, stated in 2003 that TDD encourages simple designs and inspires confidence. [ 1 ] Test-driven development is related to the test-first programming concepts of extreme programming , begun in 1999, [ 2 ] but more recently has created more general interest in its own right. [ 3 ] In test-driven development a developer creates automated unit tests that define code requirements then immediately writes the code itself. The tests contain assertions that are either true or false. Passing the tests confirms correct behavior as developers evolve and refactor the code.
Software testing - Wikipedia, the free encyclopedia
Software testing is an investigation conducted to provide stakeholders with information about the quality of the product or service under test. [ 1 ] Software testing can also provide an objective, independent view of the software to allow the business to appreciate and understand the risks of software implementation. Test techniques include, but are not limited to, the process of executing a program or application with the intent of finding software bugs (errors or other defects). Software testing, depending on the testing method employed, can be implemented at any time in the development process.
Software quality - Wikipedia, the free encyclopedia
In the context of software engineering , software quality refers to two related but distinct notions that exist wherever quality is defined in a business context: Software functional quality reflects how well it complies with or conforms to a given design, based on functional requirements or specifications. That attribute can also be described as the fitness for purpose of a piece of software or how it compares to competitors in the marketplace as a worthwhile product ; [ 1 ]
Quality assurance ( QA ) refers to the planned and systematic activities implemented in a quality system so that quality requirements for a product or service will be fulfilled [ 1 ] . It is the systematic measurement, comparison with a standard, monitoring of processes and an associated feedback loop that confers error prevention. This can be contrasted with Quality "Control". which is focused on process outputs.
Quality assurance - Wikipedia, the free encyclopedia
HP Quality Center - Wikipedia, the free encyclopedia
HP Quality Center (QC) is a set of web-based test management software offerings from the HP Software Division of Hewlett-Packard, many of which were acquired from Mercury Interactive Corporation. [ 1 ] HP Quality Center offers software quality assurance , including requirements management , test management and business process testing for IT and application environments. [ 2 ] HP Quality Center and HP Performance Center are components of the HP Application Lifecycle Management software solution set. [ 3 ] HP Change Impact Testing module for SAP Applications runs with HP Quality Management software to provide recommendations on SAP testing priorities. The software offers an automated process for identifying changes, analyzing the technical impact, evaluating the business risk, fine-tuning the test strategy and creating a test execution plan for SAP applications. [ 4 ] [ edit ] HP Functional Testing software
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Types of Testing
Fault coverage - Wikipedia, the free encyclopedia
Fault coverage refers to the percentage of some type of fault that can be detected during the test of any engineered system. High fault coverage is particularly valuable during manufacturing test, and techniques such as Design For Test (DFT) and automatic test pattern generation are used to increase it. In electronics for example, stuck-at fault coverage is measured by sticking each pin of the hardware model at logic '0' and logic '1', respectively, and running the test vectors. If at least one of the outputs differs from what is to be expected, the fault is said to be detected. Conceptually, the total number of simulation runs is twice the number of pins (since each pin is stuck in one of two ways, and both faults should be detected).
Design for Test (aka "Design for Testability" or "DFT") is a name for design techniques that add certain testability features to a microelectronic hardware product design. The premise of the added features is that they make it easier to develop and apply manufacturing tests for the designed hardware. The purpose of manufacturing tests is to validate that the product hardware contains no defects that could, otherwise, adversely affect the product’s correct functioning. Tests are applied at several steps in the hardware manufacturing flow and, for certain products, may also be used for hardware maintenance in the customer’s environment.
Design for testing - Wikipedia, the free encyclopedia
Data-driven testing - Wikipedia, the free encyclopedia
Data-driven testing (DDT) is a term used in the testing of computer software to describe testing done using a table of conditions directly as test inputs and verifiable outputs as well as the process where test environment settings and control are not hard-coded. In the simplest form the tester supplies the inputs from a row in the table and expects the outputs which occur in the same row. The table typically contains values which correspond to boundary or partition input spaces. In the control methodology, test configuration is "read" from a database.