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Test Stubs
In advanced polymorphism computer science, test stubs are programs that simulate the behaviours of software components (or modules) that a module undergoing tests depends on. Test stubs provide canned answers to calls made during the test, usually not responding at all to anything outside what's programmed in for the test.Fowler, Martin (2007), ''Mocks Aren't Stubs'(Online)/ref> They are mainly used in incremental testing's top-down approach. Stubs are computer programs that act as temporary replacement for a called basin module and give the same output as the actual product or software. Example Consider a computer program that queries a database to obtain the sum price total of all products stored in the database. In this example, the query is slow and consumes a large number of system resources. This reduces the number of test runs per day. Secondly, tests may include values outside those currently in the database. The method (or call) used to perform this is ''get_total()''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canned Response
Canned responses are predetermined responses to common questions. In fields such as technical support, canned responses to frequently asked questions may be an effective solution for both the customer and the technical adviser, as they offer the possibility to provide a quick answer to common inquiries while requiring little human intervention. Improperly used, canned responses can prove frustrating to users by providing inadequate answers. Technical support Assisting human operators In text-based technical support systems, the operator may insert a canned response triggered by keystrokes or from a drop-down menu, rather than typing the same answer repeatedly or pasting from some other resource. For example, if a support representative at an ISP's technical support team is asked to explain how to add an attachment to an email, rather than typing in all the details, the support representative may choose the response from a drop down menu, and it gets inserted into the response. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Top-down Approach
Top-down and bottom-up are both strategies of information processing and knowledge ordering, used in a variety of fields including software, humanistic and scientific theories (see systemics), and management and organization. In practice, they can be seen as a style of thinking, teaching, or leadership. A top-down approach (also known as ''stepwise design'' and stepwise refinement and in some cases used as a synonym of ''decomposition'') is essentially the breaking down of a system to gain insight into its compositional sub-systems in a reverse engineering fashion. In a top-down approach an overview of the system is formulated, specifying, but not detailing, any first-level subsystems. Each subsystem is then refined in yet greater detail, sometimes in many additional subsystem levels, until the entire specification is reduced to base elements. A top-down model is often specified with the assistance of "black boxes", which makes it easier to manipulate. However, black boxes may fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mock Object
In object-oriented programming, mock objects are simulated objects that mimic the behaviour of real objects in controlled ways, most often as part of a software testing initiative. A programmer typically creates a mock object to test the behaviour of some other object, in much the same way that a car designer uses a crash test dummy to simulate the dynamic behaviour of a human in vehicle impacts. The technique is also applicable in generic programming. Motivation In a unit test, mock objects can simulate the behavior of complex, real objects and are therefore useful when a real object is impractical or impossible to incorporate into a unit test. If an object has any of the following characteristics, it may be useful to use a mock object in its place: * the object supplies non-deterministic results (e.g. the current time or the current temperature); * it has states that are difficult to create or reproduce (e.g. a network error); * it is slow (e.g. a complete database, which wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Method Stub
A method stub or simply stub in software development is a piece of code used to stand in for some other programming functionality. A stub may simulate the behavior of existing code (such as a procedure on a remote machine; such methods are often called mocks) or be a temporary substitute for yet-to-be-developed code. Stubs are therefore most useful in porting, distributed computing as well as general software development and testing. An example of a stub in pseudocode might be as follows: temperature = ThermometerRead(Outside) if temperature > 40 then print "It is hot!" end if function ThermometerRead(Source insideOrOutside) return 28 end function The above pseudocode utilises the function , which returns a temperature. While would be intended to read some hardware device, this function currently does not contain the necessary code. So does not, in essence, simulate any process, yet it ''does'' return a legal value, allowing the main program to be at least partia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Testing
Software testing is the act of examining the artifacts and the behavior of the software under test by validation and verification. 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 not necessarily limited to: * analyzing the product requirements for completeness and correctness in various contexts like industry perspective, business perspective, feasibility and viability of implementation, usability, performance, security, infrastructure considerations, etc. * reviewing the product architecture and the overall design of the product * working with product developers on improvement in coding techniques, design patterns, tests that can be written as part of code based on various techniques like boundary conditions, etc. * executing a program or application with the intent of examining behavior * reviewing the deployment infrastructure a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Test Double
In computer programming and computer science, programmers employ a technique called automated unit testing to reduce the likelihood of bugs occurring in the software. Frequently, the final release software consists of a complex set of objects or procedures interacting together to create the final result. In automated unit testing, it may be necessary to use objects or procedures that look and behave like their release-intended counterparts, but are actually simplified versions that reduce the complexity and facilitate testing. A test double is a generic (meta) term used for these objects or procedures. Types of test doubles Gerard Meszaros identified several terms for what he calls, "Test Doubles." Using his vocabulary, there are at least five types of Test Doubles: * Test stub — used for providing the tested code with "indirect input". * Mock object — used for verifying "indirect output" of the tested code, by first defining the expectations before the tested code is execute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stub (distributed Computing)
{{unreferenced, date=June 2008 A stub in distributed computing is a piece of code that converts parameters passed between client and server during a remote procedure call ( RPC). The main idea of an RPC is to allow a local computer (client) to remotely call procedures on a different computer (server). The client and server use different address spaces, so parameters used in a function (procedure) call have to be converted, otherwise the values of those parameters could not be used, because pointers to parameters in one computer's memory would point to different data on the other computer. The client and server may also use different data representations, even for simple parameters (e.g., big-endian versus little-endian for integers). Stubs perform the conversion of the parameters, so a remote procedure call looks like a local function call for the remote computer. Stub libraries must be installed on both the client and server side. A client stub (sometimes called proxy) is responsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
