junit-quickcheck
JQF
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junit-quickcheck | JQF | |
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5 | 3 | |
952 | 629 | |
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7.3 | 6.3 | |
6 days ago | 7 months ago | |
Java | Java | |
MIT License | BSD 2-clause "Simplified" License |
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junit-quickcheck
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Need your feedback on a tool that auto-generates unit tests for java code
For anyone interested, there's also https://github.com/pholser/junit-quickcheck . Haven't used it myself but looks like an interesting library to explore. It's based on QuickCheck as well AFAIK.
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Coding Challenge
Thank you for the insightful reply. I did struggle to convert the original algorithm I wrote (with while loops / continue / break) to a more functional style using unfold, and also faced an issue with the type signatures when I tried to break down the contents of Stream.unfoldRight to multiple functions, which is reflected to the messy state you mentioned. Regarding property based testing, I used junit-quickcheck and the "symmetry" property check was one I meant to write but wasn't quite sure how to create a generator for it. I created an issue to track my attempt to incorporate your suggestions in case you are interested in following this. Thanks again!
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Does anyone have any advice for writing better Java tests.
A quick Google search shows that java has a library for this (here) but I've never used it in java so can't attest to it.
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GitHub Copilot for JetBrains and Neovim
QuickcCheck-type tools (generators for tests that know about the edge cases of a domain - e. g. for the domain of numbers considering things like 0, the infinities, various almost-and-just-over powers of two, NaN and mantissas for floats, etc.):
* QuickCheck: https://hackage.haskell.org/package/QuickCheck
* Hypothesis: https://hypothesis.readthedocs.io/en/latest/
* JUnit QuickCheck: https://github.com/pholser/junit-quickcheck
Fuzz testing tools (tools which mutate the inputs to a program in order to find interesting / failing states in that program). Generally paired with code coverage:
* American Fuzzy Lop (AFL): https://github.com/google/AFL
* JQF: https://github.com/rohanpadhye/JQF
Mutation / Fault based test tools (review your existing unit coverage and try to introduce changes to your _production_ code that none of your tests catch)
* PITest: https://pitest.org/
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Fuzzing Java in OSS-Fuzz
If you want an easy way to have better mutation coverage, check out property based testing. Eg junit-quickcheck for Java.
https://github.com/pholser/junit-quickcheck
JQF
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CS 6120: Advanced Compilers: The Self-Guided Online Course
We are working on projects related with cybersecurity and compilers. A reference we look at is [1] and [2]. I think we can publish the results in the coming months.
[1] https://github.com/rohanpadhye/jqf/wiki/Fuzzing-a-Compiler
[2] https://news.ycombinator.com/item?id=36373410
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GitHub Copilot for JetBrains and Neovim
QuickcCheck-type tools (generators for tests that know about the edge cases of a domain - e. g. for the domain of numbers considering things like 0, the infinities, various almost-and-just-over powers of two, NaN and mantissas for floats, etc.):
* QuickCheck: https://hackage.haskell.org/package/QuickCheck
* Hypothesis: https://hypothesis.readthedocs.io/en/latest/
* JUnit QuickCheck: https://github.com/pholser/junit-quickcheck
Fuzz testing tools (tools which mutate the inputs to a program in order to find interesting / failing states in that program). Generally paired with code coverage:
* American Fuzzy Lop (AFL): https://github.com/google/AFL
* JQF: https://github.com/rohanpadhye/JQF
Mutation / Fault based test tools (review your existing unit coverage and try to introduce changes to your _production_ code that none of your tests catch)
* PITest: https://pitest.org/
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Jazzer brings modern fuzz testing to the JVM
If you are interested in fuzzing your Java code, you should also have a look at the JQF project which directly integrates with junit tests: https://github.com/rohanpadhye/JQF
What are some alternatives?
jqwik - Property-Based Testing on the JUnit Platform
jazzer - Coverage-guided, in-process fuzzing for the JVM
fuzzing - Tutorials, examples, discussions, research proposals, and other resources related to fuzzing
copilot.vim - Neovim plugin for GitHub Copilot
fast-check - Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
copilot-docs - Documentation for GitHub Copilot
libfuzzer-workshop - Repository for materials of "Modern fuzzing of C/C++ Projects" workshop.
fuzzcheck-rs - Modular, structure-aware, and feedback-driven fuzzing engine for Rust functions
PIT - State of the art mutation testing system for the JVM