In computer science, test stubs are programs that simulate the behaviors of software components (or modules) that a module undergoing tests depends on.

Test stubs are mainly used in incremental testing's top-down approach. Stubs are computer programs that act as temporary replacement for a called 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(). For testing purposes, the source code in get_total() can be temporarily replaced with a simple statement that returns a specific value. This would be a test stub.

Several testing frameworks are available, as is software that generates test stubs based on existing source code and testing requirements.

A test market, in the field of business and marketing, is a geographic region or demographic group used to gauge the viability of a product or service in the mass market prior to a wide scale roll-out. The criteria used to judge the acceptability of a test market region or group include:

Practical use

The test market ideally aims to duplicate "everything" - promotion and distribution as well as "product" - on a smaller scale. The technique replicates, typically in one area, what is planned to occur in a national launch; and the results are very carefully monitored, so that they can be extrapolated to projected national results. The area may be any one of the following:

A number of decisions have to be taken about any test market:

A Test match in rugby league football is a representative match between teams representing members of the Rugby League International Federation.

The definition of a Test match differs from that of an international match. An international match can be played "between senior/open age or restricted age-level teams from different countries".

As in test cricket, a rugby league Test match is a "test of strength and competency" between the sides involved, both fielding their strongest possible teams. A test cap may be awarded by a team's governing body to the players participating in the match.

Recognition

Members of the international governing body can make their own recognition of a match as having test status. It is possible for a match to be considered a test by one side but not the other. Matches may also be given test status retrospectively by their governing bodies.

A notable instance of a different in opinions of the status of past matches is a consequence of the Super League war. The Australian Rugby League does not recognise the games played in 1997 by the Australian Super League side against Great Britain and New Zealand. The three sides were representing members of the Super League International Board, the ARL's rival. The five matches (two against New Zealand and three against Great Britain) are recognised by the Rugby League International Federation, Rugby Football League and New Zealand Rugby League as tests. There have been calls for the Super League Tests to be included in the ARL's records but ARL Chief Executive Geoff Carr said in 2010, "All historians, and the NRL, agree this is the way it should be treated". ARL historian David Middleton has stated that those players who joined Super League did so in the knowledge that they were forfeiting their chance of representing the established national team.

Test is a free jazz cooperative.

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References