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106 lines
3.7 KiB
Markdown
106 lines
3.7 KiB
Markdown
## Danger
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<!--- TOC -->
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* [What does danger checks](#what-does-danger-checks)
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* [PR check](#pr-check)
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* [Quality check](#quality-check)
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* [Setup](#setup)
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* [Run danger locally](#run-danger-locally)
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* [Danger user](#danger-user)
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* [Useful links](#useful-links)
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<!--- END -->
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## What does danger checks
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### PR check
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See the [dangerfile](../tools/danger/dangerfile.js). If you add rules in the dangerfile, please update the list below!
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Here are the checks that Danger does so far:
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- PR description is not empty
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- Big PR got a warning to recommend to split
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- PR contains a file for towncrier and extension is checked
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- PR does not modify frozen classes
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- PR contains a Sign-Off, with exception for Element employee contributors
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- PR with change on layout should include screenshot in the description
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- PR which adds png file warn about the usage of vector drawables
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- non draft PR should have a reviewer
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### Quality check
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After all the checks that generate checkstyle XML report, such as Ktlint, lint, or Detekt, Danger is run with this [dangerfile](../tools/danger/dangerfile-lint.js), in order to post comments to the PR with the detected error and warnings.
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To run locally, you will have to install the plugin `danger-plugin-lint-report` using:
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```shell
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yarn add danger-plugin-lint-report --dev
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```
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## Setup
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This operation should not be necessary, since Danger is already setup for the project.
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To setup danger to the project, run:
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```shell
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bundle exec danger init
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```
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## Run danger locally
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When modifying the [dangerfile](../tools/danger/dangerfile.js), you can check it by running Danger locally.
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To run danger locally, install it and run:
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```shell
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bundle exec danger pr <PR_URL> --dangerfile=./tools/danger/dangerfile.js
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```
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For instance:
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```shell
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bundle exec danger pr https://github.com/vector-im/element-android/pull/6637 --dangerfile=./tools/danger/dangerfile.js
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```
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We may need to create a GitHub token to have less API rate limiting, and then set the env var:
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```shell
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export DANGER_GITHUB_API_TOKEN='YOUR_TOKEN'
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```
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Swift and Kotlin (just in case)
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```shell
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bundle exec danger-swift pr <PR_URL> --dangerfile=./tools/danger/dangerfile.js
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bundle exec danger-kotlin pr <PR_URL> --dangerfile=./tools/danger/dangerfile.js
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```
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## Danger user
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To let Danger check all the PRs, including PRs form forks, a GitHub account have been created:
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- login: ElementBot
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- password: Stored on Passbolt
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- GitHub token: A token with limited access has been created and added to the repository https://github.com/vector-im/element-android as secret DANGER_GITHUB_API_TOKEN. This token is not saved anywhere else. In case of problem, just delete it and create a new one, then update the secret.
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PRs from forks do not always have access to the secret `secrets.DANGER_GITHUB_API_TOKEN`, so `secrets.GITHUB_TOKEN` is also provided to the job environment. If `secrets.DANGER_GITHUB_API_TOKEN` is available, it will be used, so user `ElementBot` will comment the PR. Else `secrets.GITHUB_TOKEN` will be used, and bot `github-actions` will comment the PR.
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## Useful links
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- https://danger.systems/
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- https://danger.systems/js/
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- https://danger.systems/js/guides/getting_started.html
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- https://danger.systems/js/reference.html
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- https://github.com/danger/awesome-danger
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Some danger files to get inspired from
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- https://github.com/artsy/emission/blob/master/dangerfile.ts
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- https://github.com/facebook/react-native/blob/master/bots/dangerfile.js
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- https://github.com/apollographql/apollo-client/blob/master/config/dangerfile.ts
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- https://github.com/styleguidist/react-styleguidist/blob/master/dangerfile.js
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- https://github.com/storybooks/storybook/blob/master/dangerfile.js
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- https://github.com/ReactiveX/rxjs/blob/master/dangerfile.js
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