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| Test Code | Code that tests the functionality of production code. Does not contribute to the operational aspects of an application. | |
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| Test-Driven Development (TDD) | A development approach where code is written in small increments, with tests defining functionality written at the beginning of each coding iteration. | |
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| Test Suite | The sum of all the test code used to check that a system meets its requirements. | |
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-| Unit | The smallest testable part of an application. This is often a single class, method or module, but can also be a small cluster of tightly coupled classes or functions that together perform a specific functionality. | |
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+| Unit | The smallest testable part of an application. This is often a single class, but can also be a single function, or a small cluster of tightly coupled classes or functions that together perform a specific task. | |
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| [[Velocity|doc:Software Engineering.Agile.Extreme Programming.Planning Game.Agile and Data.WebHome]] | See link. | |
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| Virtual Machine (VM) | A software emulation of a physical computer, able to run its own OS and applications as if it were a separate physical machine. | |
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| [[Waterfall|doc:Software Engineering.Agile.Problems of Waterfall.WebHome]] | See link. | |
