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project_spec.rb
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project_spec.rb
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# frozen_string_literal: true
RSpec.describe 'RuboCop Project', type: :feature do
let(:cop_names) do
RuboCop::Cop::Registry
.global
.without_department(:Test)
.without_department(:Test2)
.without_department(:InternalAffairs)
.cops
.map(&:cop_name)
end
version_regexp = /\A\d+\.\d+\z|\A<<next>>\z/
describe 'default configuration file' do
matcher :match_all_cops do
def expected
%w[AllCops] + cop_names
end
match { |actual| (expected.to_set ^ actual.to_set).none? }
failure_message do
diff = RSpec::Support::Differ.new.diff_as_object(expected.sort, actual.sort)
"Cop registry does not match configuration keys.\n" \
'Check if a new cop is missing configuration, or if cops were accidentally ' \
"added to the registry in another test.\n\nDiff:\n#{diff}"
end
end
subject(:config) { RuboCop::ConfigLoader.load_file('config/default.yml') }
let(:configuration_keys) { config.keys }
it 'has configuration for all cops' do
expect(configuration_keys).to match_all_cops
end
it 'has a nicely formatted description for all cops' do
cop_names.each do |name|
description = config.dig(name, 'Description')
expect(description.nil?).to(be(false),
"`Description` configuration is required for `#{name}`.")
expect(description).not_to include("\n")
start_with_subject = description.match(/\AThis cop (?<verb>.+?) .*/)
suggestion = start_with_subject[:verb]&.capitalize if start_with_subject
suggestion ||= 'a verb'
expect(start_with_subject).to(be_nil,
"`Description` for `#{name}` should be started " \
"with `#{suggestion}` instead of `This cop ...`.")
end
end
it 'requires a nicely formatted `VersionAdded` metadata for all cops' do
cop_names.each do |name|
version = config.dig(name, 'VersionAdded')
expect(version.nil?).to(be(false),
"`VersionAdded` configuration is required for `#{name}`.")
expect(version).to(match(version_regexp),
"#{version} should be format ('X.Y' or '<<next>>') for #{name}.")
end
end
%w[VersionChanged VersionRemoved].each do |version_type|
it "requires a nicely formatted `#{version_type}` metadata for all cops" do
cop_names.each do |name|
version = config.dig(name, version_type)
next unless version
expect(version).to(match(version_regexp),
"#{version} should be format ('X.Y' or '<<next>>') for #{name}.")
end
end
end
it 'has a period at EOL of description' do
cop_names.each do |name|
next unless config[name]
description = config[name]['Description']
expect(description).to match(/\.\z/)
end
end
it 'sorts configuration keys alphabetically' do
expected = configuration_keys.sort
configuration_keys.each_with_index { |key, idx| expect(key).to eq expected[idx] }
end
# rubocop:disable RSpec/NoExpectationExample
it 'has a SupportedStyles for all EnforcedStyle and EnforcedStyle is valid' do
errors = []
cop_names.each do |name|
next unless config[name]
enforced_styles = config[name].select { |key, _| key.start_with?('Enforced') }
enforced_styles.each do |style_name, style|
supported_key = RuboCop::Cop::Util.to_supported_styles(style_name)
valid = config[name][supported_key]
unless valid
errors.push("#{supported_key} is missing for #{name}")
next
end
next if valid.include?(style)
errors.push("invalid #{style_name} '#{style}' for #{name} found")
end
end
raise errors.join("\n") unless errors.empty?
end
# rubocop:enable RSpec/NoExpectationExample
# rubocop:disable RSpec/NoExpectationExample
it 'does not have any duplication' do
fname = File.expand_path('../config/default.yml', __dir__)
content = File.read(fname)
RuboCop::YAMLDuplicationChecker.check(content, fname) do |key1, key2|
raise "#{fname} has duplication of #{key1.value} " \
"on line #{key1.start_line} and line #{key2.start_line}"
end
end
# rubocop:enable RSpec/NoExpectationExample
%w[Safe SafeAutoCorrect AutoCorrect].each do |metadata|
it "does not include `#{metadata}: true`" do
cop_names.each do |cop_name|
safe = config.dig(cop_name, metadata)
expect(safe).not_to be(true), "`#{cop_name}` has unnecessary `#{metadata}: true` config."
end
end
end
it 'does not include unnecessary `SafeAutoCorrect: false`' do
cop_names.each do |cop_name|
next unless config.dig(cop_name, 'Safe') == false
safe_autocorrect = config.dig(cop_name, 'SafeAutoCorrect')
expect(safe_autocorrect).not_to(
be(false), "`#{cop_name}` has unnecessary `SafeAutoCorrect: false` config."
)
end
end
it 'is expected that all cops documented with `@safety` are `Safe: false` or `SafeAutoCorrect: false`' do
require 'yard'
YARD::Registry.load!
unsafe_cops = YARD::Registry.all(:class).select do |example|
example.tags.any? { |tag| tag.tag_name == 'safety' }
end
unsafe_cop_names = unsafe_cops.map do |cop|
department_and_cop_names = cop.path.split('::')[2..] # Drop `RuboCop::Cop` from class name.
department_and_cop_names.join('/')
end
unsafe_cop_names.each do |cop_name|
cop_config = config[cop_name]
unsafe = cop_config['Safe'] == false || cop_config['SafeAutoCorrect'] == false
expect(unsafe).to(
be(true),
"`#{cop_name}` cop should be set `Safe: false` or `SafeAutoCorrect: false` " \
'because `@safety` YARD tag exists.'
)
end
end
end
describe 'cop message' do
let(:cops) { RuboCop::Cop::Registry.all }
it 'end with a period or a question mark' do
cops.each do |cop|
begin
msg = cop.const_get(:MSG)
rescue NameError
next
end
expect(msg).to match(/(?:[.?]|(?:\[.+\])|%s)$/)
end
end
end
shared_examples 'has Changelog format' do
let(:lines) { changelog.each_line }
let(:non_reference_lines) { lines.take_while { |line| !line.start_with?('[@') } }
it 'has newline at end of file' do
expect(changelog).to end_with("\n")
end
it 'has either entries, headers, empty lines, or comments' do
expect(non_reference_lines).to all(match(/^(\*|#|$|<!---|-->| )/))
end
describe 'entry' do
it 'has a whitespace between the * and the body' do
expect(entries).to all(match(/^\* \S/))
end
it 'has one space between the period and the parentheses enclosing contributor name' do
# NOTE: For compatibility with outdated formats, if there's no contributor name,
# it checks that the line ends with a period.
expect(entries).to all(match(/(\. \(\[|\.\z)/))
end
describe 'link to related issue' do
let(:issues) do
entries.filter_map do |entry|
entry.match(%r{
(?<=^\*\s)
\[(?<ref>(?:(?<repo>rubocop/[a-z_-]+)?\#(?<number>\d+))|.*)\]
\((?<url>[^)]+)\)
}x)
end
end
it 'has a reference' do
issues.each { |issue| expect(issue[:ref]).not_to be_blank }
end
it 'has a valid issue number prefixed with #' do
issues.each { |issue| expect(issue[:number]).to match(/^\d+$/) }
end
it 'has a valid URL' do
issues.each do |issue|
number = issue[:number]&.gsub(/\D/, '')
repo = issue[:repo] || 'rubocop/rubocop'
pattern = %r{^https://github\.com/#{repo}/(?:issues|pull)/#{number}$}
expect(issue[:url]).to match(pattern)
end
end
it 'has a colon and a whitespace at the end' do
entries_including_issue_link = entries.select { |entry| entry.match(/^\*\s*\[/) }
expect(entries_including_issue_link).to all(include('): '))
end
end
describe 'contributor name' do
subject(:contributor_names) { lines.grep(/\A\[@/).map(&:chomp) }
it 'has a unique contributor name' do
expect(contributor_names.uniq.size).to eq contributor_names.size
end
end
describe 'body' do
let(:bodies) do
entries.map do |entry|
entry.gsub(/`[^`]+`/, '``').sub(/^\*\s*(?:\[.+?\):\s*)?/, '').sub(/\s*\([^)]+\)$/, '')
end
end
it 'does not start with a lower case' do
bodies.each { |body| expect(body).not_to match(/^[a-z]/) }
end
it 'ends with a punctuation' do
expect(bodies).to all(match(/[.!]$/))
end
it 'does not include a [Fix #x] directive' do
bodies.each { |body| expect(body).not_to match(/\[Fix(es)? \#.*?\]/i) }
end
end
end
end
describe 'Changelog' do
subject(:changelog) { File.read(path) }
let(:path) { File.expand_path('../CHANGELOG.md', __dir__) }
let(:entries) { lines.grep(/^\*/).map(&:chomp) }
include_examples 'has Changelog format'
context 'future entries' do
let(:allowed_cop_names) do
existing_cop_names.to_set.union(legacy_cop_names)
end
let(:existing_cop_names) do
RuboCop::Cop::Registry
.global
.without_department(:Test)
.without_department(:Test2)
.cops
.map(&:cop_name)
end
let(:legacy_cop_names) do
RuboCop::ConfigObsoletion.legacy_cop_names
end
dir = File.expand_path('../changelog', __dir__)
it 'does not have a directory' do
expect(Dir["#{dir}/*"]).to be_none { |path| File.directory?(path) }
end
Dir["#{dir}/*.md"].each do |path|
context "For #{path}" do
let(:path) { path }
include_examples 'has Changelog format'
it 'has a link to the issue or pull request address at the beginning' do
repo = 'rubocop/rubocop'
address_pattern = %r{\A\* \[#\d+\]\(https://github\.com/#{repo}/(issues|pull)/\d+\):}
expect(entries).to all(match(address_pattern))
end
it 'has a link to the contributors at the end' do
expect(entries).to all(match(/\(\[@\S+\]\[\](?:, \[@\S+\]\[\])*\)$/))
end
it 'has a single line' do
expect(File.foreach(path).count).to eq(1)
end
it 'starts with `new_`, `fix_`, or `change_`' do
expect(File.basename(path)).to(match(/\A(new|fix|change)_.+/))
end
it 'has valid cop name with backticks', :aggregate_failures do
entries.each do |entry|
entry.scan(%r{\b[A-Z]\w+(?:/[A-Z]\w+)+\b}) do |cop_name|
next if cop_name.split('/').first == 'AllCops'
expect(allowed_cop_names.include?(cop_name))
.to be(true), "Invalid cop name #{cop_name}."
expect(entry.include?("`#{cop_name}`"))
.to be(true), "Missing backticks for #{cop_name}."
end
end
end
it 'has cops in backticks with department', :aggregate_failures do
cop_names_without_department = allowed_cop_names.map { |name| name.split('/').last }
entries.each do |entry|
entry.scan(/`([A-Z]\w+)`/) do |cop_name, *|
expect(cop_names_without_department.include?(cop_name))
.to be(false), "Missing department for #{cop_name}."
end
end
end
end
end
end
it 'has link definitions for all implicit links' do
implicit_link_names = changelog.scan(/\[([^\]]+)\]\[\]/).flatten.uniq
implicit_link_names.each do |name|
expect(changelog.include?("[#{name}]: http"))
.to be(true), "missing a link for #{name}. " \
'Please add this link to the bottom of the file.'
end
end
context 'after version 0.14.0' do
let(:lines) { changelog.each_line.take_while { |line| !line.start_with?('## 0.14.0') } }
it 'has a link to the contributors at the end' do
expect(entries).to all(match(/\(\[@\S+\]\[\](?:, \[@\S+\]\[\])*\)$/))
end
end
end
describe 'requiring all of `lib` with verbose warnings enabled' do
it 'emits no warnings' do
warnings = `ruby -Ilib -w -W2 lib/rubocop.rb 2>&1`
.lines
.grep(%r{/lib/rubocop}) # ignore warnings from dependencies
expect(warnings).to eq []
end
end
end