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It is a common pattern in software testing to send values through test functions and check for correct output. In many cases, in order to thoroughly test functionalities, one needs to test multiple sets of input/output, and writing such cases separately would cause duplicate code as most of the actions would remain the same, only differing in input/output values.
Unit testing, a.k.a. component or module testing, is a form of software testing by which isolated source code is tested to validate expected behavior. [ 1 ] Unit testing describes tests that are run at the unit-level to contrast testing at the integration or system level.
A JUnit extension providing automated documentation, class hierarchy unit testing, code coverage, and multi-threaded tests. Hamcrest [310] Creating customized assertion matchers that can be used together with unit testing frameworks HavaRunner: Yes [311] A JUnit runner with built-in concurrency support, suites and scenarios. Instinct [312]
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.
Test-driven development (TDD) is a way of writing code that involves writing an automated unit-level test case that fails, then writing just enough code to make the test pass, then refactoring both the test code and the production code, then repeating with another new test case.
A test suite is a collection of related test cases. They share a framework which allows for reuse of environment setup and cleanup code. Generally, a test runner may run the cases of a suite in any order so the programmer should not depend on top-to-bottom execution order.
Test automation, mostly using unit testing, is a key feature of extreme programming and agile software development, where it is known as test-driven development (TDD) or test-first development. Unit tests can be written to define the functionality before the code is written.
[1] [2] Its use began to become popular in the Python community from around 2015. [3] tox acts a wrapper for both virtual environments and test automation tools, to simplify the consistent testing of Python code across a range of environments. [4] It integrates the use of a virtualisation tool, such as virtualenv, with a test script such as ...