Danger

Danger runs during our CI process, and lets us ensure our commits, pull requests, and more meet a minimum level of quality.

Gem Version

Setup

Enable Danger for a project within the ministryofjustice organization.

  1. Add the following to your Gemfile;

    group :development do
gem 'moj-danger'
end

  2. bundle install

  3. Create Dangerfile

echo "danger.import_dangerfile(github: 'ministryofjustice/danger')" > Dangerfile
  1. Add Danger to your .travis.yml (use whatever ruby version is appropriate)
rvm: 2.3.3

script:
  - bundle exec danger

  1. Commit the changes to the Dangerfile and .travis.yml

  2. Add the MoJ Dangerbot API token to Travis;

This assumes your project has already been added to Travis.

https://travis-ci.org/ministryofjustice/[your project]/settings

Add the environment variable DANGER_GITHUB_API_TOKEN, with the value from the password field of https://rattic.service.dsd.io/cred/detail/695/

Run danger locally

You need to create a PR before you can do this.

bundle exec danger pr https://github.com/ministryofjustice/[your project]/pull/[PR number]

Configure Danger to use this repo's Dangerfile

Commit a Dangerfile containing linking to this repo:

danger.import_dangerfile(github: 'ministryofjustice/danger')

If you're running Ruby

Add danger to your Gemfile.

gem 'danger'

Run Danger in Travis

Add Danger to .travis.yml:

before_script:
  - bundle exec danger

… or add it to your build matrix:

matrix:
  include:
    - rvm: 2.3.1
      script:
        - bundle exec danger

And add the DANGER_GITHUB_API_TOKEN as an environment variable in Travis's repo settings, which are at a URL like https://travis-ci.org/ministryofjustice/[repo]/settings. The API token itself is in Rattic (search for Danger).

Run Danger in CircleCI

Just add bundle exec danger to your circle.yml, either as an extra step in your test overrides, or in a new pre section. You'll need to add the DANGER_GITHUB_API_TOKEN to the environment variables like with Travis, and Danger recommend setting “only build pull requests” in the advanced settings.

If you're not running Ruby

If Danger is your only Ruby dependency, you probably don't want to have a Gemfile cluttering up your repo. In that case, you can (probably) use this command in the Travis config above:

rbenv global 2.3.1 && gem install danger --version '~> 5.0' && danger