Commit 45c7c044 authored by Ash McKenzie's avatar Ash McKenzie

Add new GitlabDanger class

This class encapsulates our use of the Danger gem.
parent 2cb63935
# frozen_string_literal: true
class GitlabDanger
LOCAL_RULES ||= %w[
changes_size
gemfile
documentation
frozen_string
duplicate_yarn_dependencies
prettier
eslint
database
].freeze
CI_ONLY_RULES ||= %w[
metadata
changelog
specs
commit_messages
roulette
single_codebase
gitlab_ui_wg
ce_ee_vue_templates
only_documentation
].freeze
MESSAGE_PREFIX = '==>'.freeze
attr_reader :gitlab_danger_helper
def initialize(gitlab_danger_helper)
@gitlab_danger_helper = gitlab_danger_helper
end
def self.local_warning_message
"#{MESSAGE_PREFIX} Only the following Danger rules can be run locally: #{LOCAL_RULES.join(', ')}"
end
def self.success_message
"#{MESSAGE_PREFIX} No Danger rule violations!"
end
def rule_names
ci? ? LOCAL_RULES | CI_ONLY_RULES : LOCAL_RULES
end
def html_link(str)
self.ci? ? gitlab_danger_helper.html_link(str) : str
end
def ci?
!gitlab_danger_helper.nil?
end
end
# frozen_string_literal: true
require 'spec_helper'
describe GitlabDanger do
let(:gitlab_danger_helper) { nil }
subject { described_class.new(gitlab_danger_helper) }
describe '.local_warning_message' do
it 'returns an informational message with rules that can run' do
expect(described_class.local_warning_message).to eq('==> Only the following Danger rules can be run locally: changes_size, gemfile, documentation, frozen_string, duplicate_yarn_dependencies, prettier, eslint, database')
end
end
describe '.success_message' do
it 'returns an informational success message' do
expect(described_class.success_message).to eq('==> No Danger rule violations!')
end
end
describe '#rule_names' do
context 'when running locally' do
it 'returns local only rules' do
expect(subject.rule_names).to eq(described_class::LOCAL_RULES)
end
end
context 'when running under CI' do
let(:gitlab_danger_helper) { double('danger_gitlab_helper') }
it 'returns all rules' do
expect(subject.rule_names).to eq(described_class::LOCAL_RULES | described_class::CI_ONLY_RULES)
end
end
end
describe '#html_link' do
context 'when running locally' do
it 'returns the same string' do
str = 'something'
expect(subject.html_link(str)).to eq(str)
end
end
context 'when running under CI' do
let(:gitlab_danger_helper) { double('danger_gitlab_helper') }
it 'returns a HTML link formatted version of the string' do
str = 'something'
html_formatted_str = %Q{<a href="#{str}">#{str}</a>}
expect(gitlab_danger_helper).to receive(:html_link).with(str).and_return(html_formatted_str)
expect(subject.html_link(str)).to eq(html_formatted_str)
end
end
end
describe '#ci?' do
context 'when gitlab_danger_helper is not available' do
it 'returns false' do
expect(subject.ci?).to be_falsey
end
end
context 'when gitlab_danger_helper is available' do
let(:gitlab_danger_helper) { double('danger_gitlab_helper') }
it 'returns true' do
expect(subject.ci?).to be_truthy
end
end
end
end
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