Pythonic library for QuickCheck-style randomized testing and SmallCheck-style exhaustive testing of the same test suite.
A library for property-based testing in two different ways:
These testing approaches are named for the pioneering Haskell libraries. The two approaches truly shine when used together - once a property is found to be refutable by some probably-huge-and-crazy random input, it is often worth investing the CPU time to find the _smallest_ counterexample.
This library is a brand new work-in-progress (see commit log for dates) with known issues:
- Does not have randomly generated strings just yet.
- No existential quantification yet, but smallcheck does allow it!
- Needs more thorough testing.
- Needs to be able to test that a property always throws an exception.
- Needs lots more combinators.
- Needs one-liner interface rather than checking status of test cases.
(TODO: Describe in more detail. For now, read doublecheck/gen.py and doublecheck/prop.py)
$ pip install doublecheck $ python >>> from doublecheck import * >>> ForAll(lambda i: i > 0, PosInts()).quickcheck(100000).status ‘Certain’
Copyright 2012- Kenneth Knowles
Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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|doublecheck-0.1pre2012-05-08T10-05-14.tar.gz (5.1 kB) Copy SHA256 Checksum SHA256||–||Source||May 8, 2012|