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| Integration/Integrated | 1) The opposite of isolation. Integration is the process of combining different software units or components to work together as a single, cohesive system. For example, component testing is more integrated than unit testing because it involves multiple units working together. Integration testing tests the interaction between two components. 2) (Code) Integration, another term for merging code, usually into the main branch. See also 'Continuous Integration'. | |
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| [[Inversion of Control|doc:Software Engineering.Architecture.Dependency Injection.Dependency Injection Explained.WebHome]] (IoC) | A design principle that encourages the delegation of application unit wiring to a computer algorithm that facilitates dependency injection, rather than the developer implementing this logic manually. | |
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| Module | A distinct part of a software that encapsulates specific implementation details, such as functions, data structures, classes, interfaces, or even other modules. It exposes a concise API designed to perform specific tasks. These modules are typically crafted for reusability and improved code organization, thereby promoting a modular design. Many languages provide modularization features such as [Go modules](https://go.dev/blog/using-go-modules) or [Java modules](https://www.oracle.com/corporate/features/understanding-java-9-modules.html). | |
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-| Layer | Level of abstraction in a system where related functionality is grouped together. For example, in a horizontally layered architecture, there is a controller layer consisting of controllers that are technically similar because they translate HTTP requests into data structures and vice versa. | |
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+| Layer | Level of abstraction in system where related functionality is grouped together. For example, in a horizontally layered architecture, there is a controller layer consisting of controllers that are technically similar because they translate HTTP requests into data structures and vice versa. | |
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| Logic | A set of instructions that determines how a program operates based on given inputs or conditions. Thus, basically any source code can be considered logic. | |
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| Logical | The counterpart to physical. The abstract representation of something in software. For example, deleting a file from the desktop only logically deletes it, but actually moves it to the Recycle Bin, while the file physically remains on disk until the Recycle Bin is emptied. | |
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| Magic | Code that performs complex tasks while abstracting away the complexity, presenting a simple interface to the user. | |
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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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-| Testability | Code is testable, or has good testability, if it is easy to write tests for. | |
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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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+| 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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| [[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. | |
