We aim to keep the code coverage of Electron high. We ask that all pull request not only pass all existing tests, but ideally also add new tests to cover changed code and new scenarios. Ensuring that we capture as many code paths and use cases of Electron as possible ensures that we all ship apps with fewer bugs.
npm run lint-js, which will run
standard against both Electron itself as well as the unit tests. If you are using an editor with a plugin/addon system, you might want to use one of the many StandardJS addons to be informed of coding style violations before you ever commit them.
standard with parameters, run
npm run lint-js -- followed by arguments you want passed to
To ensure that your C++ is in compliance with the Electron coding style, run
npm run lint-cpp, which runs a
cpplint script. We recommend that you use
clang-format and prepared a short tutorial.
There is not a lot of Python in this repository, but it too is governed by coding style rules.
npm run lint-py will check all Python, using
pylint to do so.
To run all unit tests, run
npm run test. The unit tests are an Electron app (surprise!) that can be found in the
spec folder. Note that it has its own
package.json and that its dependencies are therefore not defined in the top-level
To run only specific tests matching a pattern, run
npm run test -- -g=PATTERN, replacing the
PATTERN with a regex that matches the tests you would like to run. As an example: If you want to run only IPC tests, you would run
npm run test -- -g ipc.
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