42492596b3
Summary: For now i setup the CI using VSTS (Visual Studio Team Services) , i m using my own account, but i want to move this to a Travis setup so it would be easy ported to Facebook own build system. We can also take a look on how buck can help with this. Here's a overview of my dashboard for the build and release process on VSTS: <img width="1084" alt="screen shot 2017-02-16 at 23 52 07" src="https://cloud.githubusercontent.com/assets/1235097/23046869/ff4dcada-f4a3-11e6-8d09-fb8974fb58d4.png"> The all process is pretty simple, there's a few tricks here and there, but the basic steps are: <img width="1036" alt="builds" src="https://cloud.githubusercontent.com/assets/1235097/23046874/0cb95fc2-f4a4-11e6-8fd8-3048be7ffd9d.png"> These run for every commit and publish the artifacts, then the release lane takes that artifacts and builds a nuget, after that (and it's not implemented yet) we run UI Tests on devices Android , iOS for the nuget created and run tests on UWP and .net45 on both windows and OS X so Closes https://github.com/facebook/yoga/pull/408 Reviewed By: emilsjolander Differential Revision: D4576542 Pulled By: splhack fbshipit-source-id: 66e0e4c1cb3721ed7aa7118e4e226b6ec575fea8
Yoga 
Building
Yoga builds with buck. Make sure you install buck before contributing to Yoga. Yoga's main implementation is in C, with bindings to supported languages and frameworks. When making changes to Yoga please ensure the changes are also propagated to these bindings when applicable.
Testing
For testing we rely on gtest as a submodule. After cloning Yoga run git submodule init followed by git submodule update.
For any changes you make you should ensure that all the tests are passing. In case you make any fixes or additions to the library please also add tests for that change to ensure we don't break anything in the future. Tests are located in the tests directory. Run the tests by executing buck test //:yoga.
Instead of manually writing a test which ensures parity with web implementations of Flexbox you can run gentest/gentest.rb to generated a test for you. You can write html which you want to verify in Yoga, in gentest/fixtures folder, such as the following.
<div id="my_test" style="width: 100px; height: 100px; align-items: center;">
<div style="width: 50px; height: 50px;"></div>
</div>
Run gentest/gentest.rb to generate test code and re-run buck test //:yoga to validate the behavior. One test case will be generated for every root div in the input html.
You may need to install the latest watir-webdriver gem (gem install watir-webdriver) and ChromeDriver to run gentest/gentest.rb Ruby script.
.NET
.NET testing is not integrated in buck yet, you might need to set up .NET testing environment. We have a script which to launch C# test on macOS, csharp/tests/Facebook.Yoga/test_macos.sh.
Code style
For the main C implementation of Yoga clang-format is used to ensure a consistent code style. Please run bash format.sh before submitting a pull request. For other languages just try to follow the current code style.
Benchmarks
Benchmarks are located in benchmark/YGBenchmark.c and can be run with buck run //benchmark:benchmark. If you think your change has affected performance please run this before and after your change to validate that nothing has regressed. Benchmarks are run on every commit in CI.