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unittest adheres to a more verbose syntax because it is inspired by the Java programming language's JUnit, as are most unit testing libraries; pytest achieves the same while intercepting Python's built-in assert calls, making the approach more concise.
Unit is defined as a single behaviour exhibited by the system under test (SUT), usually corresponding to a requirement [definition needed].While it may imply that it is a function or a module (in procedural programming) or a method or a class (in object-oriented programming) it does not mean functions/methods, modules or classes always correspond to units.
PHP Unit Testing Framework: Yes: No [452] It produces ASCII, XML or XHTML output and runs from the command line. lime: No: Yes [453] Sub-project of Symfony: Lens: Yes: Yes [454] An invisible framework with readable tests that catch everything. Atoum: Yes: Yes [455] A modern, simple and intuitive PHP 5.3+ unit testing framework. SimpleTest: Yes ...
In computer software testing, a test assertion is an expression which encapsulates some testable logic specified about a target under test. The expression is formally presented as an assertion, along with some form of identifier, to help testers and engineers ensure that tests of the target relate properly and clearly to the corresponding specified statements about the target.
x = 1; assert x > 0; x ++; assert x > 1; Programmers can use assertions to help specify programs and to reason about program correctness. For example, a precondition —an assertion placed at the beginning of a section of code—determines the set of states under which the programmer expects the code to execute.
However, this scheme has minimal performance cost if no exception is thrown. Since exceptions in C++ are supposed to be exceptional (i.e. uncommon/rare) events, the phrase "zero-cost exceptions" [note 2] is sometimes used to describe exception handling in C++.
For example, a mock object might assert the order in which its methods are called, or assert consistency of data across method calls. In the book The Art of Unit Testing [7] mocks are described as a fake object that helps decide whether a test failed or passed by verifying whether an interaction with an object occurred. Everything else is ...
This can be modified by options to the doctest runner. In addition, doctest has been integrated with the Python unit test module allowing doctests to be run as standard unittest testcases. Unittest testcase runners allow more options when running tests such as the reporting of test statistics such as tests passed, and failed.