白盒测试（white-box testing）又称透明盒测试（glass box testing）、结构测试（structural testing）等，软件测试的主要方法之一，也称结构测试、逻辑驱动测试或基于进程本身的测试。测试应用程序的内部结构或运作，而不是测试应用程序的功能（即黑箱测试）。在白箱测试时，以编程语言的角度来设计测试案例。测试者输入数据验证数据流在程序中的流动路径，并确定适当的输出，类似测试电路中的节点。测试者了解待测试进程的内部结构、算法等信息，这是从进程设计者的角度对进程进行的测试。

White-box testing (also known as clear box testing, glass box testing, transparent box testing, and structural testing) is a method of testing software that tests internal structures or workings of an application, as opposed to its functionality (i.e. black-box testing). In white-box testing an internal perspective of the system, as well as programming skills, are used to design test cases. The tester chooses inputs to exercise paths through the code and determine the appropriate outputs. This is analogous to testing nodes in a circuit, e.g. in-circuit testing (ICT). White-box testing can be applied at the unit, integration and system levels of the software testing process. Although traditional testers tended to think of white-box testing as being done at the unit level, it is used for integration and system testing more frequently today. It can test paths within a unit, paths between units during integration, and between subsystems during a system–level test. Though this method of test design can uncover many errors or problems, it has the potential to miss unimplemented parts of the specification or missing requirements.