159 lines
6.7 KiB
Markdown
159 lines
6.7 KiB
Markdown
# How to become a contributor and submit your own code
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## Contributor License Agreements
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We'd love to accept your patches! Before we can take them, we have to jump a
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couple of legal hurdles.
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Please fill out either the individual or corporate Contributor License Agreement
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(CLA).
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* If you are an individual writing original source code and you're sure you
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own the intellectual property, then you'll need to sign an
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[individual CLA](https://developers.google.com/open-source/cla/individual).
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* If you work for a company that wants to allow you to contribute your work,
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then you'll need to sign a
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[corporate CLA](https://developers.google.com/open-source/cla/corporate).
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Follow either of the two links above to access the appropriate CLA and
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instructions for how to sign and return it. Once we receive it, we'll be able to
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accept your pull requests.
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## Are you a Googler?
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If you are a Googler, please make an attempt to submit an internal change rather
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than a GitHub Pull Request. If you are not able to submit an internal change a
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PR is acceptable as an alternative.
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## Contributing A Patch
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1. Submit an issue describing your proposed change to the
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[issue tracker](https://github.com/google/googletest).
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2. Please don't mix more than one logical change per submittal, because it
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makes the history hard to follow. If you want to make a change that doesn't
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have a corresponding issue in the issue tracker, please create one.
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3. Also, coordinate with team members that are listed on the issue in question.
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This ensures that work isn't being duplicated and communicating your plan
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early also generally leads to better patches.
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4. If your proposed change is accepted, and you haven't already done so, sign a
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Contributor License Agreement (see details above).
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5. Fork the desired repo, develop and test your code changes.
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6. Ensure that your code adheres to the existing style in the sample to which
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you are contributing.
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7. Ensure that your code has an appropriate set of unit tests which all pass.
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8. Submit a pull request.
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## The Google Test and Google Mock Communities
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The Google Test community exists primarily through the
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[discussion group](http://groups.google.com/group/googletestframework) and the
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GitHub repository. Likewise, the Google Mock community exists primarily through
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their own [discussion group](http://groups.google.com/group/googlemock). You are
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definitely encouraged to contribute to the discussion and you can also help us
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to keep the effectiveness of the group high by following and promoting the
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guidelines listed here.
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### Please Be Friendly
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Showing courtesy and respect to others is a vital part of the Google culture,
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and we strongly encourage everyone participating in Google Test development to
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join us in accepting nothing less. Of course, being courteous is not the same as
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failing to constructively disagree with each other, but it does mean that we
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should be respectful of each other when enumerating the 42 technical reasons
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that a particular proposal may not be the best choice. There's never a reason to
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be antagonistic or dismissive toward anyone who is sincerely trying to
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contribute to a discussion.
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Sure, C++ testing is serious business and all that, but it's also a lot of fun.
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Let's keep it that way. Let's strive to be one of the friendliest communities in
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all of open source.
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As always, discuss Google Test in the official GoogleTest discussion group. You
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don't have to actually submit code in order to sign up. Your participation
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itself is a valuable contribution.
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## Style
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To keep the source consistent, readable, diffable and easy to merge, we use a
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fairly rigid coding style, as defined by the
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[google-styleguide](https://github.com/google/styleguide) project. All patches
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will be expected to conform to the style outlined
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[here](https://google.github.io/styleguide/cppguide.html). Use
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[.clang-format](https://github.com/google/googletest/blob/master/.clang-format)
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to check your formatting
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## Requirements for Contributors
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If you plan to contribute a patch, you need to build Google Test, Google Mock,
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and their own tests from a git checkout, which has further requirements:
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* [Python](https://www.python.org/) v2.3 or newer (for running some of the
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tests and re-generating certain source files from templates)
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* [CMake](https://cmake.org/) v2.6.4 or newer
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* [GNU Build System](https://en.wikipedia.org/wiki/GNU_Build_System) including
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automake (>= 1.9), autoconf (>= 2.59), and libtool / libtoolize.
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## Developing Google Test
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This section discusses how to make your own changes to Google Test.
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### Testing Google Test Itself
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To make sure your changes work as intended and don't break existing
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functionality, you'll want to compile and run Google Test's own tests. For that
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you can use CMake:
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mkdir mybuild
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cd mybuild
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cmake -Dgtest_build_tests=ON ${GTEST_DIR}
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Make sure you have Python installed, as some of Google Test's tests are written
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in Python. If the cmake command complains about not being able to find Python
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(`Could NOT find PythonInterp (missing: PYTHON_EXECUTABLE)`), try telling it
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explicitly where your Python executable can be found:
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cmake -DPYTHON_EXECUTABLE=path/to/python -Dgtest_build_tests=ON ${GTEST_DIR}
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Next, you can build Google Test and all of its own tests. On \*nix, this is
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usually done by 'make'. To run the tests, do
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make test
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All tests should pass.
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### Regenerating Source Files
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Some of Google Test's source files are generated from templates (not in the C++
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sense) using a script. For example, the file
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include/gtest/internal/gtest-type-util.h.pump is used to generate
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gtest-type-util.h in the same directory.
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You don't need to worry about regenerating the source files unless you need to
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modify them. You would then modify the corresponding `.pump` files and run the
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'[pump.py](googletest/scripts/pump.py)' generator script. See the
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[Pump Manual](googletest/docs/PumpManual.md).
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## Developing Google Mock
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This section discusses how to make your own changes to Google Mock.
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#### Testing Google Mock Itself
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To make sure your changes work as intended and don't break existing
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functionality, you'll want to compile and run Google Test's own tests. For that
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you'll need Autotools. First, make sure you have followed the instructions above
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to configure Google Mock. Then, create a build output directory and enter it.
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Next,
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${GMOCK_DIR}/configure # try --help for more info
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Once you have successfully configured Google Mock, the build steps are standard
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for GNU-style OSS packages.
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make # Standard makefile following GNU conventions
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make check # Builds and runs all tests - all should pass.
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Note that when building your project against Google Mock, you are building
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against Google Test as well. There is no need to configure Google Test
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separately.
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