NOTE: This is a deprecated version of the PTTT. For the 'golden image', please visit the official Python wiki page.

DEPRECATED

Unit Testing Tools

Mock/Stub Testing Tools

Fuzz Testing Tools

Web Testing Tools

Acceptance/Business Logic Testing Tools

GUI Testing Tools

Source Code Checking Tools

Code Coverage Tools

Continuous Integration Tools

Miscellaneous Python Testing Tools

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Unit Testing Tools

ToolCategoryAuthorPart ofClaim to fame
unittest unit testing Steve Purcell Python standard lib first unit test framework to be included in Python standard library; easy to use by people familiar with the xUnit frameworks; strong support for test organization and reuse via test suites
doctest unit testing Tim Peters Python standard libcopy and paste output from shell session; Agile Documentation: unit tests themselves can serve as documentation when combined with epydoc; also see Django's approach
py.test unit testing Holger Krekel py lib no API!;automatic collection of tests; simple asserts; strong support for test fixture/state management via setup/teardown hooks; strong debugging support via customized traceback
TestOOB unittest extensions Ori Peleg unittest enhancements; test filtering via regex/glob patterns; reporting in XML/HTML; colorized output; runs pdb on failing tests; run in parallel in threads/processes; verbose asserts; report failures immediately; and a little more;
nose unittest extensions Jason Pellerin unit test framework, used most notably by TurboGears and Pylons; provides an alternate test discovery and running process for unittest, one that is intended to mimic the behavior of py.test as much as is reasonably possible without resorting to too much magic. More friendly with unittest.TestCase-based tests than py.test. There are also many plugins available.
Trial unittest extensions Jonathan Lange Twisted Extension of unittest to support writing asynchronous unit tests using Deferreds and new result types ('skip' and 'todo'). Includes a command-line program that does test discovery and integrates with doctest and coverage.
subunit unittest extensions Robert Collins Transparently adds support for running unittest test cases/suites in a separate process : prevents system wide changes by a test destabilising the test runner. It also allows reporting from tests in another process into the unittest framework, giving a single integrated test environment.
testresources unittest extensions Robert Collins Provides a mechanism for managing 'resources' - expensive bits of infrastructure - that are needed by multiple tests. Resources are constructed and free on demand, but with an optional TestSuite?, the test run order is optimised to reduce the number of resource constructions and releases needed. Compatible with unittest.
testtools unittest extensions Jonathan Lange Useful extensions to unittest derived from custom extensions by projects such as Twisted and Bazaar.
Sancho unit testing MEMS and Nanotechnology Exchange MEMS Exchange tools Sancho 2.1 runs tests, and provides output for tests that fail; Sancho 2.1 does not count tests passed or failed; targets projects that do not maintain failing tests
pyUnitPerf performance-based unit testing Grig Gheorghiu port of JUnitPerf; transparently adds performance testing capabilities to existing unitttest-based test suites
Peckcheck specification-based unit testing Darius Bacon like the unittest module, except that test methods may take arguments; you declare each argument with a default value which names a test-data generator and the peckcheck module will peck at your test methods with a bunch of generated values
qunittest unit testing Edgewall Easy-to-use (PyQt) GUI framework and application for use with the Python unit testing framework. It can be used to conveniently execute unit tests and suites, and then display the results in a useful fashion.
testosterone unit testing Chad Whitacre A manly test runner; command-line and curses(3) interfaces; the iPod of test runners. (More seriously, makes it easier to browse and inspect your test failures)
zope.testing unit testing Zope3 community Powerful test runner that includes support for post-mortem debugging of test failures. Also includes profiling and coverage reporting. This is a standalone package that has no dependencies on Zope and works just fine with projects that don't use Zope.
pry unit testing Aldo Cortesi Elegant unit testing framework with built-in coverage analysis, profiling, micro-benchmarking and a powerful command-line interface.
pythoscope unit testing Michal Kwiatkowski Tool that will automatically, or semi-automatically, generate unit tests for legacy systems written in Python.
testlib unittest extensions Logilab logilab-common Gives more power to standard unittest. More assert* methods; support for module level setup/teardown; skip test feature...
pytest tests runner Logilab logilab-common Tests finder / runner. Selectivly run tests; Stop on first failure; Run pdb on failed tests; Colorized reports; Run tests with coverage / profile enabled...
dutest unittest extensions Olemis Lang PyOOP package (distributed separately too) An object oriented interface to retrieve unittest test cases out of doctests. Hides initialization from doctests by allowing setUp and tearDown for each interactive example. Allows control over all the options provided by doctest. Specialized classes allow selective test discovery across a package hierarchy.

Mock Testing Tools

ToolCategoryAuthorClaim to fame
Ludibrio mocks, stubs, spy, and dummies Gustavo Rezende Elegant test doubles framework in Python (mocks, stubs, spy, and dummies)
Python Mock mock testing Dave Kirby Python Mock enables the easy creation of mock objects that can be used to emulate the behaviour of any class that the code under test depends on. You can set up expectations about the calls that are made to the mock object, and examine the history of calls made. This makes it easier to unit test classes in isolation. Download it here.
PyMock mock testing Jeff Younker PyMock is based on the Java easymock package. It uses a recording and replay model rather than using a specification language. Easymock lives up to its name compared to other mocking packages. PyMock takes advantage of python's dynamic nature for futher improvements.
mock mock testing Michael Foord aka Fuzzyman Provides "action -> assertion" mocking patter, instead of standard "record -> replay" pattern
pMock mock testing Graham Carlyle Inspired by the Java jMock library, pMock makes the writing of unit tests using mock object techniques easier. Development of pmock has long since stopped and so it can be considered dead.
minimock mock testing Ian Bicking Embeds mock testing constructs inside doctest tests.
svnmock mock testing Collin Winter enables easier testing of Python programs that make use of Subversion's Python bindings
Mocker mock testing Gustavo Niemeyer Graceful platform for test doubles in Python (mocks, stubs, fakes, and dummies). Well-documented and fairly feature-complete.
Stubble stub testing Iwan Vosloo Stubble allows you to write arbitrary classes for use as stubs instead of read classes while testing. Stubble lets you link a stub class loosely to the real class which it is a stub for. This information is then used to ensure that tests will break if there is a discrepancy between the interface supported by your stub class and that of the real class it stands in for.
Mox mock testing smiddlek, dglasser Mox is based on EasyMock, a Java mock object framework. Mox will make mock objects for you, so you don't have to create your own! It mocks the public/protected interfaces of Python objects. You set up your mock objects expected behavior using a domain specific language (DSL), which makes it easy to use, understand, and refactor!
MockTest mock testing Tim Cuthbertson (gfxmonk) Mocktest allows you to mock / stub objects and make expectations about the methods you expect to be called as well as the arguments they should be called with. Expectations are very readable and expressive, and checked automatically. Any stubbed methods are reverted after each test case. Still under development, so subject to change
Fudge mock and stub testing Kumar McMillan A module for using fake objects (mocks, stubs, etc) to test real ones. Uses a declrative syntax like jMock whereby you set up expectations for how an object should be used. An error will raise if an expectation is not met.
Mockito for Python mock and stub testing Szczepan Faber A port of the Mockito mocking framework to Python. (Technically speaking, Mockito is a Test Spy framework.)

Fuzz Testing Tools

According to Wikipedia, "fuzz testing" (or "fuzzing") is a software testing technique whose basic idea is to attach the inputs of a program to a source of random data ("fuzz"). If the program fails (for example, by crashing, or by failing built-in code assertions), then there are defects to correct. The great advantage of fuzz testing is that the test design is extremely simple, and free of preconceptions about system behavior.

ToolAuthorClaim to fame
Pester Ivan Moore Tests your tests by mutating source code and finding tests that don't fail!
Peach Fuzzer Framework Michael Eddington Peach can fuzz just about anything from .NET, COM/ActiveX, SQL, shared libraries/DLL's, network applications, web, you name it.
antiparser dmckinney The purpose of antiparser is to provide an API that can be used to model network protocols and file formats by their composite data types. Once a model has been created, the antiparser has various methods for creating random sets of data that deviates in ways that will ideally trigger software bugs or security vulnerabilities.
Taof (The Art Of Fuzzing) rodrigomarcos Taof is a GUI cross-platform Python generic network protocol fuzzer. It has been designed for minimizing set-up time during fuzzing sessions and it is specially useful for fast testing of proprietary or undocumented protocols.
Fusil (Fusil the fuzzer) Victor Stinner It helps to start process with a prepared environment (limit memory, environment variables, redirect stdout, etc.), start network client or server, and create mangled files. Fusil has many probes to detect program crash: watch process exit code, watch process stdout and syslog for text patterns (eg. "segmentation fault"), watch session duration, watch cpu usage (process and system load), etc.

Web Testing Tools

First, let's define some categories of Web testing tools:

  • Browser simulation tools: simulate browsers by implementing the HTTP request/response protocol and by parsing the resulting HTML
  • Browser automation tools: automate browsers by driving them for example via COM calls in the case of Internet Explorer, or XPCOM in the case of Mozilla
  • In-process or unit-test-type tools (definition courtesy of Ian Bicking): call an application in the same process, instead of generating an HTTP request; so an exception in the application would go all the way up to the command runner (py.test, unittest, etc).
ToolCategoryAuthorPart ofClaim to fame
twill Browser simulation & In-process Titus Brown offers simple commands for navigating Web pages, posting forms and asserting conditions; can be used as shell script or Python module; can be used for unit-testing your own Web app; stress-test functionality; port of PBP; uses John J. Lee's mechanize
webunit Browser simulation Richard Jones HTTP, HTTPS, GET, POST, basic auth all handled; control over expected status codes; uses unittest as the underlying framework
FunkLoad Browser simulation Benoit Delbosc / Nuxeo functional/performance/load/stress testing for Web applications; easy test creation using TCPWatch as proxy recorder; reporting capabilities; based on webunit
zope.testbrowser Browser simulation Benji York Zope 3 designed to be used in doctests that mirror user actions (see the README.txt for examples); can also be used as standalone Web testing tool outside of Zope 3
webtest Browser simulation Robert Brewer CherryPy extensions to unittest for web frameworks; uses http://docs.python.org/lib/module-httplib.html httplib]
PAMIE Browser automation Robert Marchetti automates Internet Explorer by manipulating IE's Document Object Model via COM
PyXPCOM Browser automation Mark Hammond provides Python XPCOM bindings for automating Mozilla browsers
paste.test.fixture In-process Ian Bicking Paste lets you test your WSGI applications without a server; similar in feel to zope.testbrowser
DjangoTesting In-process Georg Bauer DjangoStuff very simple and small testing framework for Django applications, based on the ideas of the Ruby on Rails testing framework; fully based on unittest, so you don't need anything beside Django and Python to make use of it
ibofobi.utils.test In-process Sune Kirkeby testing framwework for Django applications; built on top of doctest instead of unittest; fixtures are written in YAML not Python code; implemented simple request/response tests on top of Beautiful Soup
wsgi-intercept In-process Kumar McMillan This library lets you intercept calls to any specific host/port combination and redirect them into a WSGI application
windmill Browser Automation Windmill Community Cross-Platform and Cross-Browser web automation tool, supports Firefox, Safari, Chrome and IE on Mac, Linux and Windows. Written in Python, test authoring libraries in Python and JavaScript. Active community, #windmill on irc.freenode.org

Note: Although not a Python-specific testing tool, Selenium is nevertheless an important addition to any tester's arsenal. It relates to Python in that it can use a Twisted-based server to run tests against Web applications. Read a tutorial about it, followed by a quick update. With make_selenium.py script you can write Selenium tests in Python.

Acceptance/Business Logic Testing Tools

ToolAuthorClaim to fame
PyFIT John Roth port of FIT; supports both FIT and FitNesse; acceptance tests for business logic written as HTML or Wiki tables
TextTest Geoff Bache works by comparing plain text logged by programs with a previous 'gold standard' version of that text; the tool itself is written in Python but it can be used to test programs written in any language; comes with extensive self tests which serve as examples of how to use it, i.e. how to test a non-trivial application with a pyGTK GUI.
FitLoader Ian Bicking A (rather alpha-ish) library for loading tests from Excel or CSV files; not really a framework, but useful for acceptance tests written by non-programmers
Robot Framework Pekka Klärck Robot Framework is a keyword-driven test automation framework for acceptance level testing and acceptance test-driven development (ATDD). It has an easy-to-use tabular syntax for creating test cases and its testing capabilities can be extended by test libraries implemented either with Python or Java (requires Jython). Users can also create new keywords from existing ones using the same simple syntax that is used for creating test cases.

GUI Testing Tools

ToolAuthorClaim to fame
guitest Gintautas Miliauskas Python helper library for testing Python GUI applications, with pyGTK support being the most mature
pyGUIUnit Fabio Zadrozny aims to be a gui unittesting library for python; initially provided solely for PyQt, but it may be extended in the future
dogtail Zack Cerza Created by Redhat engineers on linux. Uses the X11 accessability framework (AT-SPI) to drive applications so works well with the gnome desktop on Unixes. Has flash movies
ldtp team members Also uses the X11 accessability framework (AT-SPI) to drive applications so works well with the gnome desktop on Unixes. Has extensive tests for the evolution groupware client.
pywinauto Mark McMahon Simple Windows (NT/2K/XP) GUI automation with Python. There are tests included for Localization testing but there is no limitation to this. Most of the code at the moment is for recovering information from Windows windows and performing actions on those controls. The idea is to have high level methods for standard controls rather then rely on Sending keystrokes to the applications.
pyAA Peter Parente pyAA is an object oriented Python wrapper around the client-side functionality in the Microsoft Active Accessibility (MSAA) library. MSAA is a library for the Windows platform that allows client applications inspect, control, and monitor events and controls in graphical user interfaces (GUIs) and server applications to expose runtime information about their user interfaces. See the User interface automation with pyAA tutorial for more info.
WATSUP Dr Tim Couper Windows Application Test System Using Python - another Windows GUI automation tool.
winGuiAuto Simon Brunning Low-level library for Windows GUI automation used by PAMIE and WATSUP.
kiwi ui testing Johan Dahlin PyGTK UI Testing framework, recording and playback system.

Source Code Checking Tools

ToolAuthorClaim to fame
PyChecker Eric Newton and Neal Norwitz finds problems that are typically caught by a compiler for less dynamic languages; imports each module before checking it
Pylint Sylvain Thénault / Logilab includes PyChecker checks, plus more features, like checking line-code's length, checking if variable names are well-formed according to your coding standard, or checking if declared interfaces are truly implemented
Pyflakes Phil Frost / Divmod similar to PyChecker; focused on identifying common errors quickly without executing Python code; its primary advantage over PyChecker is that it is fast: it runs on most large projects in only a few seconds
Clone Digger Peter Bulychev Clone Digger aims to detect similar code in Python and Java programs. The synonyms for the term similar code are clone and duplicate code.

Code Coverage Tools

ToolAuthorClaim to fame
coverage Ned Batchelder measures code coverage during Python execution; uses the code analysis tools and tracing hooks provided in the Python standard library to determine which lines are executable, and which have been executed
figleaf Titus Brown figleaf is a Python code coverage analysis tool, built somewhat on the model of Ned Batchelder's fantastic coverage module. The goals of figleaf are to be a minimal replacement of 'coverage.py' that supports more configurable coverage gathering and reporting; figleaf is useful for situations where you are recording code coverage in multiple execution runs and/or want to tweak the reporting output
trace2html Olivier Grisel HTML test coverage reporting tool with white and blacklisting support
coverage langlet Kay Schluehr The coverage langlet weaves monitoring commands, so called sensors, into source code during global source transformation. When a statement is covered the weaved sensor responds. The coverage langlet is part of EasyExtend
pry Aldo Cortesi Elegant unit testing framework with built-in coverage analysis, profiling, micro-benchmarking and a powerful command-line interface.

Continuous Integration Tools

Although not properly a part of testing tools, continuous integration tools are nevertheless an important addition to a tester's arsenal.

ToolAuthorClaim to fame
buildbot Brian Warner buildbot is a system to automate the compile/test cycle required by most software projects to validate code changes. By automatically rebuilding and testing the tree each time something has changed, build problems are pinpointed quickly, before other developers are inconvenienced by the failure.
Bitten Christopher Lenz Bitten is a Python-based framework for collecting various software metrics via continuous integration. It builds on Trac to provide an integrated web-based user interface.
SVNChecker Heinrich Wendel of German Aerospace Center SVNChecker is a framework for Subversion pre-commit hooks in order to implement checks of the to be commited files before they are commited. For example, you can check for the code style or unit tests. The output of the checks can be send by mail or be written into a file or simply print to the console.
apycot Logilab an Automated Pythonic Code Tester: designed to run tests on a code repository on a daily basis. It comes with a set of predefined test, essentially for python packages, and a set of predefined reports to display execution results. However, it has been designed to be higly extensible, so you could write your own test or report using the Python language
pony-build Titus Brown pony-build is a simple continuous integration package that lets you run a server to display client build results. It consists of two components, a server (which is run in some central & accessible location), and one or more clients (which must be able to contact the server via HTTP). Philosophy statement: good development tools for Python should be easy to install, easy to hack, and not overly constraining. Two out of three ain't bad ;).

Test Fixtures

ToolAuthorPart ofClaim to fame
fixture Kumar McMillan module for loading and referencing test data
Django Fixtures Russell Keith-Magee django A test case for a database-backed website isn't much use if there isn't any data in the database. To make it easy to put test data into the database, Django provides a fixtures framework.

Miscellaneous Python Testing Tools

ToolAuthorPart ofClaim to fame
retest Christof Hoeke enables tests of Python regular expressions in a web browser; it uses SimpleHTTPServer and AJAX
pyreb Giuseppe "Cowo" Corbelli a wxPython GUI to the re module
kodos Phil Schwartz a QT (KDE) Regular Expression Debugger
paste TestFileEnvironment Ian Bicking Paste A simple environment for testing command-line applications, running commands and seeing what files they write to
Heapy Sverker Nilsson Guppy-PE supports profiling, debugging and optimization regarding memory related issues in Python programs
PySizer Nick Smallbone a memory usage profiler for Python code
PyMetrics Reginald B. Charney Generates metrics (e.g. McCabe, LoC, %comments, etc.) for Python code.
complexity Curt Finch Analyzes cyclomatic complexity of Python code (written in Perl)
qmtest CodeSourcery test and automation framework, in python
consoletest Kay Schluehr EasyExtend Records interactive sessions and extracts test cases when they get replayed
AllPairs MetaCommunications Test combinations generator (in python) that allows to create set of tests using 'pairwise combinations' method, which reduces a number of combinations of variables into a lesser set which covers most situations. See http://www.pairwise.org/ for more info on this functional testing technique.
PyModel Jon Jacky Model-based testing framework where the models are written in Python. PyModel supports offline and on-the-fly testing. It uses composition for scenario control. Coverage can be guided by a programmable strategy.