freezegun
nixpkgs
Our great sponsors
freezegun | nixpkgs | |
---|---|---|
9 | 973 | |
3,970 | 15,656 | |
- | 5.3% | |
6.7 | 10.0 | |
3 days ago | 1 day ago | |
Python | Nix | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
freezegun
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About time: how to unit test code that depends on time
* in C++.
On Python, just use freezegun to inject controllable timestamps in response to calls to time methods.
https://github.com/spulec/freezegun
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How to simulate a delay in a test?
I had much fun with https://github.com/spulec/freezegun
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Unnecessary unit-test mocking?
If you're ever in Python-land, freezegun is a super neat library that snags all the time/date related functions and lets you control time from code.
- Microsoft Exchange stops passing mail due to bug on 1/1/22
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Python: Please stop screwing over Linux distros
For example, freezegun which is a common testing utility.
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Mocking Python datetime In Tests With FreezeGun
FreezeGun is a library that helps with mocking out the datetime.datetime.now function. It is a very useful tool for testing code that uses the datetime library.
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Introduction to Flaky Tests by Example
Another way of doing so would be to inject the value directly to the method. Python has a very good library to sandbox the tests when using the built-in datetime objects: freezegun. Once again, and unfortunately for us, the project was using arrow so this was not a possibility.
- FreezeGun: Let your Python tests travel through time
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As a beginner to testing, what is the best and fastest way to create testing cases?
If you do time sensitive tests, use freeze gun to make them reproducible https://github.com/spulec/freezegun
nixpkgs
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Air Force picks Anduril, General Atomics to develop unmanned fighter jets
https://github.com/NixOS/nixpkgs/commits?author=neon-sunset
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Eelco Dolstra's leadership is corrosive to the Nix project
I see two signers in the top 6 displayed on https://github.com/NixOS/nixpkgs/graphs/contributors
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3rd Edition of Programming: Principles and Practice Using C++ by Stroustrup
For a single file script, nix can make the package management quite easy: https://github.com/NixOS/nixpkgs/blob/master/doc/languages-f...
For example,
```
- NixOS/nixpkgs: There isn't a clear canonical way to refer to a specific package
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NixOS Is Not Reproducible
Yes, Nix doesn't actually ensure that the builds are deterministic. In fact it works just fine if they aren't. There are packages in nixpkgs that aren't reproducible: https://github.com/NixOS/nixpkgs/issues?q=is%3Aopen+is%3Aiss...
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The xz attack shell script
I'm not familiar with Bazel, but Nix in it's current form wouldn't have solved this attack. First of all, the standard mkDerivation function calls the same configure; make; make install process that made this attack possible. Nixpkgs regularly pulls in external resources (fetchUrl and friends) that are equally vulnerable to a poisoned release tarball. Checkout the comment on the current xz entry in nixpkgs https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/comp...
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Debian Git Monorepo
NixOS uses a monorepo and I think everyone's love it.
I love being able to easily grep through all the packages source code and there's regularly PRs that harmonizes conventions across many packages.
Nixpkgs doesn't include the packaged software source code, so it's a lot more practical than what Debian is doing.
https://github.com/NixOS/nixpkgs
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From xz to ibus: more questionable tarballs
In this specific case, nix uses fetchFromGitHub to download the source archive, which are generated by GitHub for the specified revision[1]. Arch seems to just download the tarball from the releases page[2].
[1]: https://github.com/NixOS/nixpkgs/blob/3c2fdd0a4e6396fc310a6e...
[2]: https://gitlab.archlinux.org/archlinux/packaging/packages/ib...
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GitHub Disabled the Xz Repo
True, but irrelevant -- _some packages_, _somewhere_, do depend on xz, which, if built, requires pulling the source from GitHub (see the default.nix: https://github.com/NixOS/nixpkgs/blob/nixos-23.11/pkgs/tools...)
It's not the vulnerability that's a problem right now (NixOS was protected by a couple of factors) but rather GitHub's hamfisted response.
That is the problem.
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Combining Nix with Terraform for better DevOps
We’ve noticed that some users have been asking about how to use older versions of Terraform in their Nix setups [1, 2]. This is an example of the diverse needs of people and the importance of maintaining backward compatibility. We hope that nixpkgs-terraform will be a useful tool for these users.
What are some alternatives?
time-machine - Travel through time in your tests.
asdf - Extendable version manager with support for Ruby, Node.js, Elixir, Erlang & more
python-libfaketime - A fast time mocking alternative to freezegun that wraps libfaketime.
Home Manager using Nix - Manage a user environment using Nix [maintainer=@rycee]
Moto - A library that allows you to easily mock out tests based on AWS infrastructure.
git-lfs - Git extension for versioning large files
VCR.py - Automatically mock your HTTP interactions to simplify and speed up testing
easyeffects - Limiter, compressor, convolver, equalizer and auto volume and many other plugins for PipeWire applications
httpretty - Intercept HTTP requests at the Python socket level. Fakes the whole socket module
spack - A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
mock - The Python mock library
waydroid - Waydroid uses a container-based approach to boot a full Android system on a regular GNU/Linux system like Ubuntu.