/
options_spec.rb
410 lines (351 loc) · 16.3 KB
/
options_spec.rb
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# frozen_string_literal: true
RSpec.describe RuboCop::Options, :isolated_environment do
include FileHelper
subject(:options) { described_class.new }
before do
$stdout = StringIO.new
$stderr = StringIO.new
end
after do
$stdout = STDOUT
$stderr = STDERR
end
def abs(path)
File.expand_path(path)
end
describe 'option' do
describe '-h/--help' do
it 'exits cleanly' do
expect { options.parse ['-h'] }.to exit_with_code(0)
expect { options.parse ['--help'] }.to exit_with_code(0)
end
it 'shows help text' do
begin
options.parse(['--help'])
rescue SystemExit # rubocop:disable Lint/SuppressedException
end
expected_help = <<~OUTPUT
Usage: rubocop [options] [file1, file2, ...]
-L, --list-target-files List all files RuboCop will inspect.
--except [COP1,COP2,...] Disable the given cop(s).
--only [COP1,COP2,...] Run only the given cop(s).
--only-guide-cops Run only cops for rules that link to a
style guide.
-c, --config FILE Specify configuration file.
--force-exclusion Force excluding files specified in the
configuration `Exclude` even if they are
explicitly passed as arguments.
--ignore-parent-exclusion Prevent from inheriting AllCops/Exclude from
parent folders.
--force-default-config Use default configuration even if configuration
files are present in the directory tree.
--auto-gen-config Generate a configuration file acting as a
TODO list.
--exclude-limit COUNT Used together with --auto-gen-config to
set the limit for how many Exclude
properties to generate. Default is 15.
--disable-uncorrectable Used with --auto-correct to annotate any
offenses that do not support autocorrect
with `rubocop:todo` comments.
--no-offense-counts Do not include offense counts in configuration
file generated by --auto-gen-config.
--auto-gen-only-exclude Generate only Exclude parameters and not Max
when running --auto-gen-config, except if the
number of files with offenses is bigger than
exclude-limit.
--no-auto-gen-timestamp Do not include the date and time when
the --auto-gen-config was run in the file it
generates.
--init Generate a .rubocop.yml file in the current directory.
-f, --format FORMATTER Choose an output formatter. This option
can be specified multiple times to enable
multiple formatters at the same time.
[p]rogress is used by default
[a]utogenconf
[c]lang
[e]macs
[fi]les
[fu]ubar
[h]tml
[j]son
[ju]nit
[o]ffenses
[pa]cman
[p]rogress
[q]uiet
[s]imple
[t]ap
[w]orst
custom formatter class name
-o, --out FILE Write output to a file instead of STDOUT.
This option applies to the previously
specified --format, or the default format
if no format is specified.
-r, --require FILE Require Ruby file.
--fail-level SEVERITY Minimum severity (A/R/C/W/E/F) for exit
with error code.
--display-only-fail-level-offenses
Only output offense messages at
the specified --fail-level or above
--show-cops [COP1,COP2,...] Shows the given cops, or all cops by
default, and their configurations for the
current directory.
-F, --fail-fast Inspect files in order of modification
time and stop after the first file
containing offenses.
-C, --cache FLAG Use result caching (FLAG=true) or don't
(FLAG=false), default determined by
configuration parameter AllCops: UseCache.
-d, --debug Display debug info.
-D, --[no-]display-cop-names Display cop names in offense messages.
Default is true.
-E, --extra-details Display extra details in offense messages.
-S, --display-style-guide Display style guide URLs in offense messages.
-a, --auto-correct Auto-correct offenses.
--ignore-disable-comments Run cops even when they are disabled locally
with a comment.
--safe Run only safe cops.
--[no-]color Force color output on or off.
-v, --version Display version.
-V, --verbose-version Display verbose version.
-P, --parallel Use available CPUs to execute inspection in
parallel.
-l, --lint Run only lint cops.
-x, --fix-layout Run only layout cops, with auto-correct on.
--safe-auto-correct Run auto-correct only when it's safe.
-s, --stdin FILE Pipe source from STDIN, using FILE in offense
reports. This is useful for editor integration.
OUTPUT
expect($stdout.string).to eq(expected_help)
end
it 'lists all builtin formatters' do
begin
options.parse(['--help'])
rescue SystemExit # rubocop:disable Lint/SuppressedException
end
option_sections = $stdout.string.lines.slice_before(/^\s*-/)
format_section = option_sections.find do |lines|
lines.first =~ /^\s*-f/
end
formatter_keys = format_section.reduce([]) do |keys, line|
match = line.match(/^[ ]{39}(\[[a-z\]]+)/)
next keys unless match
keys << match.captures.first
end.sort
expected_formatter_keys =
RuboCop::Formatter::FormatterSet::BUILTIN_FORMATTERS_FOR_KEYS
.keys.sort
expect(formatter_keys).to eq(expected_formatter_keys)
end
end
describe 'incompatible cli options' do
it 'rejects using -v with -V' do
msg = 'Incompatible cli options: [:version, :verbose_version]'
expect { options.parse %w[-vV] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
it 'rejects using -v with --show-cops' do
msg = 'Incompatible cli options: [:version, :show_cops]'
expect { options.parse %w[-v --show-cops] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
it 'rejects using -V with --show-cops' do
msg = 'Incompatible cli options: [:verbose_version, :show_cops]'
expect { options.parse %w[-V --show-cops] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
it 'mentions all incompatible options when more than two are used' do
msg = 'Incompatible cli options: [:version, :verbose_version,' \
' :show_cops]'
expect { options.parse %w[-vV --show-cops] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
end
describe '--parallel' do
context 'combined with --cache false' do
it 'fails with an error message' do
msg = ['-P/--parallel uses caching to speed up execution, so ',
'combining with --cache false is not allowed.'].join
expect { options.parse %w[--parallel --cache false] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
end
context 'combined with --auto-correct' do
it 'fails with an error message' do
msg = '-P/--parallel cannot be combined with --auto-correct.'
expect { options.parse %w[--parallel --auto-correct] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
end
context 'combined with --auto-gen-config' do
it 'fails with an error message' do
msg = '-P/--parallel uses caching to speed up execution, while ' \
'--auto-gen-config needs a non-cached run, so they cannot be ' \
'combined.'
expect { options.parse %w[--parallel --auto-gen-config] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
end
context 'combined with --fail-fast' do
it 'fails with an error message' do
msg = '-P/--parallel cannot be combined with -F/--fail-fast.'
expect { options.parse %w[--parallel --fail-fast] }
.to raise_error(RuboCop::OptionArgumentError, msg)
end
end
end
describe '--fail-level' do
it 'accepts full severity names' do
%w[refactor convention warning error fatal].each do |severity|
expect { options.parse(['--fail-level', severity]) }
.not_to raise_error
end
end
it 'accepts severity initial letters' do
%w[R C W E F].each do |severity|
expect { options.parse(['--fail-level', severity]) }
.not_to raise_error
end
end
it 'accepts the "fake" severities A/autocorrect' do
%w[autocorrect A].each do |severity|
expect { options.parse(['--fail-level', severity]) }
.not_to raise_error
end
end
end
describe '--require' do
let(:required_file_path) { './path/to/required_file.rb' }
before do
create_empty_file('example.rb')
create_file(required_file_path, "puts 'Hello from required file!'")
end
it 'requires the passed path' do
options.parse(['--require', required_file_path, 'example.rb'])
expect($stdout.string).to start_with('Hello from required file!')
end
end
describe '--cache' do
it 'fails if no argument is given' do
expect { options.parse %w[--cache] }
.to raise_error(OptionParser::MissingArgument)
end
it 'fails if unrecognized argument is given' do
expect { options.parse %w[--cache maybe] }
.to raise_error(RuboCop::OptionArgumentError)
end
it 'accepts true as argument' do
expect { options.parse %w[--cache true] }.not_to raise_error
end
it 'accepts false as argument' do
expect { options.parse %w[--cache false] }.not_to raise_error
end
end
describe '--disable-uncorrectable' do
it 'accepts together with --auto-correct' do
expect { options.parse %w[--auto-correct --disable-uncorrectable] }
.not_to raise_error
end
it 'accepts together with --safe-auto-correct' do
expect { options.parse %w[--safe-auto-correct --disable-uncorrectable] }
.not_to raise_error
end
it 'fails if given alone without --auto-correct/-a' do
expect { options.parse %w[--disable-uncorrectable] }
.to raise_error(RuboCop::OptionArgumentError)
end
end
describe '--exclude-limit' do
it 'fails if given last without argument' do
expect { options.parse %w[--auto-gen-config --exclude-limit] }
.to raise_error(OptionParser::MissingArgument)
end
it 'fails if given alone without argument' do
expect { options.parse %w[--exclude-limit] }
.to raise_error(OptionParser::MissingArgument)
end
it 'fails if given first without argument' do
expect { options.parse %w[--exclude-limit --auto-gen-config] }
.to raise_error(OptionParser::MissingArgument)
end
it 'fails if given without --auto-gen-config' do
expect { options.parse %w[--exclude-limit 10] }
.to raise_error(RuboCop::OptionArgumentError)
end
end
describe '--auto-gen-only-exclude' do
it 'fails if given without --auto-gen-config' do
expect { options.parse %w[--auto-gen-only-exclude] }
.to raise_error(RuboCop::OptionArgumentError)
end
end
describe '--auto-gen-config' do
it 'accepts other options' do
expect { options.parse %w[--auto-gen-config --lint] }
.not_to raise_error
end
end
describe '-s/--stdin' do
before do
$stdin = StringIO.new
$stdin.puts("{ foo: 'bar' }")
$stdin.rewind
end
it 'fails if no paths are given' do
expect { options.parse %w[-s] }
.to raise_error(OptionParser::MissingArgument)
end
it 'succeeds with exactly one path' do
expect { options.parse %w[--stdin foo] }.not_to raise_error
end
it 'fails if more than one path is given' do
expect { options.parse %w[--stdin foo bar] }
.to raise_error(RuboCop::OptionArgumentError)
end
end
end
describe 'options precedence' do
def with_env_options(options)
ENV['RUBOCOP_OPTS'] = options
yield
ensure
ENV.delete('RUBOCOP_OPTS')
end
subject(:parsed_options) { options.parse(command_line_options).first }
let(:command_line_options) { %w[--no-color] }
context '.rubocop file' do
before do
create_file('.rubocop', '--color --fail-level C')
end
it 'has lower precedence then command line options' do
expect(parsed_options).to eq(color: false, fail_level: :convention)
end
it 'has lower precedence then options from RUBOCOP_OPTS env variable' do
with_env_options '--fail-level W' do
expect(parsed_options).to eq(color: false, fail_level: :warning)
end
end
end
context '.rubocop directory' do
before do
FileUtils.mkdir '.rubocop'
end
it 'is ignored and command line options are used' do
expect(parsed_options).to eq(color: false)
end
end
context 'RUBOCOP_OPTS environment variable' do
it 'has lower precedence then command line options' do
with_env_options '--color' do
expect(parsed_options).to eq(color: false)
end
end
it 'has higher precedence then options from .rubocop file' do
create_file('.rubocop', '--color --fail-level C')
with_env_options '--fail-level W' do
expect(parsed_options).to eq(color: false, fail_level: :warning)
end
end
end
end
end