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auto_gen_config_spec.rb
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auto_gen_config_spec.rb
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# frozen_string_literal: true
require 'timeout'
RSpec.describe 'RuboCop::CLI --auto-gen-config', :isolated_environment do # rubocop:disable RSpec/DescribeClass
subject(:cli) { RuboCop::CLI.new }
include_context 'cli spec behavior'
describe '--auto-gen-config' do
before { RuboCop::Formatter::DisabledConfigFormatter.config_to_allow_offenses = {} }
shared_examples 'LineLength handling' do |ctx, initial_dotfile, exp_dotfile|
context ctx do
# Since there is a line with length 99 in the inspected code,
# Style/IfUnlessModifier will register an offense when
# Layout/LineLength:Max has been set to 99. With a lower
# LineLength:Max there would be no IfUnlessModifier offense.
it "bases other cops' configuration on the code base's current maximum line length" do
if initial_dotfile
initial_config = YAML.safe_load(initial_dotfile.join($RS)) || {}
inherited_files = Array(initial_config['inherit_from'])
(inherited_files - ['.rubocop.yml']).each { |f| create_empty_file(f) }
create_file('.rubocop.yml', initial_dotfile)
create_file('.rubocop_todo.yml', [''])
end
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
def f
#{' #' * 46}
if #{'a' * 120}
return y
end
z
end
RUBY
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect(File.readlines('.rubocop_todo.yml')
.drop_while { |line| line.start_with?('#') }.join)
.to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
Style/IfUnlessModifier:
Exclude:
- 'example.rb'
# Offense count: 2
# Cop supports --auto-correct.
# Configuration parameters: AutoCorrect, AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
# URISchemes: http, https
Layout/LineLength:
Max: 138
YAML
expect(File.read('.rubocop.yml').strip).to eq(exp_dotfile.join($RS))
$stdout = StringIO.new
expect(RuboCop::CLI.new.run([])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to include('no offenses detected')
end
end
end
include_examples 'LineLength handling',
'when .rubocop.yml does not exist',
nil,
['inherit_from: .rubocop_todo.yml']
include_examples 'LineLength handling',
'when .rubocop.yml is empty',
[''],
['inherit_from: .rubocop_todo.yml']
include_examples 'LineLength handling',
'when .rubocop.yml inherits only from .rubocop_todo.yml',
['inherit_from: .rubocop_todo.yml'],
['inherit_from: .rubocop_todo.yml']
include_examples 'LineLength handling',
'when .rubocop.yml inherits only from .rubocop_todo.yml ' \
'in an array',
['inherit_from:',
' - .rubocop_todo.yml'],
['inherit_from:',
' - .rubocop_todo.yml']
include_examples 'LineLength handling',
'when .rubocop.yml inherits from another file and ' \
'.rubocop_todo.yml',
['inherit_from:',
' - common.yml',
' - .rubocop_todo.yml'],
['inherit_from:',
' - common.yml',
' - .rubocop_todo.yml']
include_examples 'LineLength handling',
'when .rubocop.yml inherits from two other files',
['inherit_from:',
' - common1.yml',
' - common2.yml'],
['inherit_from:',
' - .rubocop_todo.yml',
' - common1.yml',
' - common2.yml']
include_examples 'LineLength handling',
'when .rubocop.yml inherits from another file',
['inherit_from: common.yml'],
['inherit_from:',
' - .rubocop_todo.yml',
' - common.yml']
include_examples 'LineLength handling',
"when .rubocop.yml doesn't inherit",
['Style/For:',
' Enabled: false'],
['inherit_from: .rubocop_todo.yml',
'',
'Style/For:',
' Enabled: false']
context 'with Layout/LineLength:Max overridden' do
before do
create_file('.rubocop.yml', ['Layout/LineLength:',
" Max: #{line_length_max}",
" Enabled: #{line_length_enabled}"])
create_file('.rubocop_todo.yml', [''])
create_file('example.rb', <<~RUBY)
def f
#{' #' * 33}
if #{'a' * 80}
return y
end
z
end
RUBY
end
context 'when .rubocop.yml has Layout/LineLength:Max less than code base max' do
let(:line_length_max) { 90 }
let(:line_length_enabled) { true }
it "bases other cops' configuration on the overridden LineLength:Max" do
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stdout.string).to include(<<~YAML)
Added inheritance from `.rubocop_todo.yml` in `.rubocop.yml`.
Phase 1 of 2: run Layout/LineLength cop (skipped because the default Layout/LineLength:Max is overridden)
Phase 2 of 2: run all cops
YAML
# We generate a Layout/LineLength:Max even though it's overridden in
# .rubocop.yml. We want to show somewhere what the actual maximum is.
#
# Note that there is no Style/IfUnlessModifier offense registered due
# to the Max:90 setting.
expect(File.readlines('.rubocop_todo.yml')
.drop_while { |line| line.start_with?('#') }.join)
.to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: AutoCorrect, AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
# URISchemes: http, https
Layout/LineLength:
Max: 99
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example.rb'
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
inherit_from: .rubocop_todo.yml
Layout/LineLength:
Max: 90
Enabled: true
YAML
$stdout = StringIO.new
expect(RuboCop::CLI.new.run(%w[--format simple --debug])).to eq(1)
expect($stdout.string)
.to include('.rubocop.yml: Layout/LineLength:Max overrides the ' \
"same parameter in .rubocop_todo.yml\n")
expect($stdout.string).to include(<<~OUTPUT)
== example.rb ==
C: 2: 91: Layout/LineLength: Line is too long. [99/90]
1 file inspected, 1 offense detected
OUTPUT
end
end
context 'when .rubocop.yml has Layout/LineLength disabled ' do
let(:line_length_max) { 90 }
let(:line_length_enabled) { false }
it 'skips the cop from both phases of the run' do
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stdout.string).to include(<<~YAML)
Added inheritance from `.rubocop_todo.yml` in `.rubocop.yml`.
Phase 1 of 2: run Layout/LineLength cop (skipped because Layout/LineLength is disabled)
Phase 2 of 2: run all cops
YAML
# The code base max line length is 99, but the setting Enabled: false
# overrides that so no Layout/LineLength:Max setting is generated in
# .rubocop_todo.yml.
expect(File.readlines('.rubocop_todo.yml')
.drop_while { |line| line.start_with?('#') }.join)
.to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example.rb'
# Offense count: 1
# Cop supports --auto-correct.
Style/IfUnlessModifier:
Exclude:
- 'example.rb'
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
inherit_from: .rubocop_todo.yml
Layout/LineLength:
Max: 90
Enabled: false
YAML
$stdout = StringIO.new
expect(RuboCop::CLI.new.run(%w[--format simple])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to eq(<<~OUTPUT)
1 file inspected, no offenses detected
OUTPUT
end
end
context 'when .rubocop.yml has Layout/LineLength:Max more than code base max' do
let(:line_length_max) { 150 }
let(:line_length_enabled) { true }
it "bases other cops' configuration on the overridden LineLength:Max" do
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stdout.string).to include(<<~YAML)
Added inheritance from `.rubocop_todo.yml` in `.rubocop.yml`.
Phase 1 of 2: run Layout/LineLength cop (skipped because the default Layout/LineLength:Max is overridden)
Phase 2 of 2: run all cops
YAML
# The code base max line length is 99, but the setting Max:150
# overrides that so no Layout/LineLength:Max setting is generated in
# .rubocop_todo.yml.
expect(File.readlines('.rubocop_todo.yml')
.drop_while { |line| line.start_with?('#') }.join)
.to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example.rb'
# Offense count: 1
# Cop supports --auto-correct.
Style/IfUnlessModifier:
Exclude:
- 'example.rb'
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
inherit_from: .rubocop_todo.yml
Layout/LineLength:
Max: 150
Enabled: true
YAML
$stdout = StringIO.new
expect(RuboCop::CLI.new.run(%w[--format simple])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to eq(<<~OUTPUT)
1 file inspected, no offenses detected
OUTPUT
end
end
end
it 'overwrites an existing todo file' do
create_file('example1.rb', ['# frozen_string_literal: true',
'',
'x= 0 ',
'#' * 125,
'y ',
'puts x'])
create_file('.rubocop_todo.yml', <<~YAML)
Layout/LineLength:
Enabled: false
YAML
create_file('.rubocop.yml', ['inherit_from: .rubocop_todo.yml'])
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect(File.readlines('.rubocop_todo.yml')[8..-1].map(&:chomp))
.to eq(['# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowForAlignment, ' \
'EnforcedStyleForExponentOperator.',
'# SupportedStylesForExponentOperator: space, no_space',
'Layout/SpaceAroundOperators:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 2',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowInHeredoc.',
'Layout/TrailingWhitespace:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: AutoCorrect, AllowHeredoc, ' \
'AllowURI, URISchemes, IgnoreCopDirectives, ' \
'IgnoredPatterns.',
'# URISchemes: http, https',
'Layout/LineLength:',
' Max: 125'])
# Create new CLI instance to avoid using cached configuration.
new_cli = RuboCop::CLI.new
expect(new_cli.run(['example1.rb'])).to eq(0)
end
it 'honors rubocop:disable comments' do
create_file('example1.rb', ['#' * 121,
'# rubocop:disable LineLength',
'#' * 125,
'y ',
'puts 123456',
'# rubocop:enable LineLength'])
create_file('.rubocop.yml', ['inherit_from: .rubocop_todo.yml'])
create_file('.rubocop_todo.yml', [''])
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect(File.readlines('.rubocop_todo.yml')[8..-1].join)
.to eq(['# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowInHeredoc.',
'Layout/TrailingWhitespace:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 2',
'# Cop supports --auto-correct.',
'Migration/DepartmentName:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: EnforcedStyle.',
'# SupportedStyles: always, always_true, never',
'Style/FrozenStringLiteralComment:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: Strict.',
'Style/NumericLiterals:',
' MinDigits: 7',
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: AutoCorrect, AllowHeredoc, ' \
'AllowURI, URISchemes, IgnoreCopDirectives, ' \
'IgnoredPatterns.',
'# URISchemes: http, https',
'Layout/LineLength:',
' Max: 121',
''].join("\n"))
end
context 'when --config is used' do
it 'can generate a todo list' do
create_file('example1.rb', ['$x = 0 ', '#' * 90, 'y ', 'puts x'])
create_file('dir/cop_config.yml', <<~YAML)
Layout/TrailingWhitespace:
Enabled: false
Layout/LineLength:
Max: 95
YAML
expect(cli.run(%w[--auto-gen-config --config dir/cop_config.yml])).to eq(0)
expect(Dir['.*']).to include('.rubocop_todo.yml')
todo_contents = File.read('.rubocop_todo.yml').lines[8..-1].join
expect(todo_contents).to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example1.rb'
# Offense count: 1
# Configuration parameters: AllowedVariables.
Style/GlobalVars:
Exclude:
- 'example1.rb'
YAML
expect(File.read('dir/cop_config.yml')).to eq(<<~YAML)
inherit_from: .rubocop_todo.yml
Layout/TrailingWhitespace:
Enabled: false
Layout/LineLength:
Max: 95
YAML
end
end
context 'when working with a cop who do not support auto-correction' do
it 'can generate a todo list' do
create_file('example1.rb', <<~RUBY)
def fooBar; end
RUBY
create_file('.rubocop.yml', <<~YAML)
# The following cop does not support auto-correction.
Naming/MethodName:
Enabled: true
YAML
expect(cli.run(%w[--auto-gen-config])).to eq(0)
expect($stderr.string).to eq('')
# expect($stdout.string).to include('Created .rubocop_todo.yml.')
expect(Dir['.*']).to include('.rubocop_todo.yml')
todo_contents = File.read('.rubocop_todo.yml').lines[8..-1].join
expect(todo_contents).to eq(<<~YAML)
# Offense count: 1
# Configuration parameters: EnforcedStyle, IgnoredPatterns.
# SupportedStyles: snake_case, camelCase
Naming/MethodName:
Exclude:
- 'example1.rb'
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example1.rb'
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
inherit_from: .rubocop_todo.yml
# The following cop does not support auto-correction.
Naming/MethodName:
Enabled: true
YAML
end
end
context 'when existing config file has a YAML document start header' do
it 'inserts `inherit_from` key after hearder' do
create_file('example1.rb', <<~RUBY)
def foo; end
RUBY
create_file('.rubocop.yml', <<~YAML)
# rubocop config file
--- # YAML document start
# The following cop does not support auto-correction.
Naming/MethodName:
Enabled: true
YAML
expect(cli.run(%w[--auto-gen-config])).to eq(0)
expect($stderr.string).to eq('')
expect(Dir['.*']).to include('.rubocop_todo.yml')
todo_contents = File.read('.rubocop_todo.yml').lines[8..-1].join
expect(todo_contents).to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example1.rb'
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
# rubocop config file
--- # YAML document start
inherit_from: .rubocop_todo.yml
# The following cop does not support auto-correction.
Naming/MethodName:
Enabled: true
YAML
end
end
context 'when working in a subdirectory' do
it 'can generate a todo list' do
create_file('dir/example1.rb', ['$x = 0 ', '#' * 90, 'y ', 'puts x'])
create_file('dir/.rubocop.yml', <<~YAML)
inherit_from: ../.rubocop.yml
YAML
create_file('.rubocop.yml', <<~YAML)
Layout/TrailingWhitespace:
Enabled: false
Layout/LineLength:
Max: 95
YAML
Dir.chdir('dir') { expect(cli.run(%w[--auto-gen-config])).to eq(0) }
expect($stderr.string).to eq('')
# expect($stdout.string).to include('Created .rubocop_todo.yml.')
expect(Dir['dir/.*']).to include('dir/.rubocop_todo.yml')
todo_contents = File.read('dir/.rubocop_todo.yml').lines[8..-1].join
expect(todo_contents).to eq(<<~YAML)
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: always, always_true, never
Style/FrozenStringLiteralComment:
Exclude:
- 'example1.rb'
# Offense count: 1
# Configuration parameters: AllowedVariables.
Style/GlobalVars:
Exclude:
- 'example1.rb'
YAML
expect(File.read('dir/.rubocop.yml')).to eq(<<~YAML)
inherit_from:
- .rubocop_todo.yml
- ../.rubocop.yml
YAML
end
end
context 'when inheriting from a URL' do
let(:remote_config_url) { 'https://example.com/foo/bar' }
before do
stub_request(:get, remote_config_url)
.to_return(status: 200, body: "Style/Encoding:\n Enabled: true")
end
context 'when there is a single entry' do
it 'can generate a todo list' do
create_file('dir/example1.rb', ['$x = 0 ', '#' * 90, 'y ', 'puts x'])
create_file('.rubocop.yml', <<~YAML)
inherit_from: #{remote_config_url}
YAML
expect(cli.run(%w[--auto-gen-config])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to include(<<~YAML)
Added inheritance from `.rubocop_todo.yml` in `.rubocop.yml`.
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
inherit_from:
- .rubocop_todo.yml
- #{remote_config_url}
YAML
end
end
context 'when there are multiple entries' do
it 'can generate a todo list' do
create_file('dir/example1.rb', ['$x = 0 ', '#' * 90, 'y ', 'puts x'])
create_file('.rubocop.yml', <<~YAML)
inherit_from:
- #{remote_config_url}
YAML
expect(cli.run(%w[--auto-gen-config])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to include(<<~YAML)
Added inheritance from `.rubocop_todo.yml` in `.rubocop.yml`.
YAML
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
inherit_from:
- .rubocop_todo.yml
- #{remote_config_url}
YAML
end
end
end
it 'can generate a todo list' do
create_file('example1.rb', ['# frozen_string_literal: true',
'',
'$x= 0 ',
'#' * 130,
'#' * 125,
'y ',
'puts x'])
create_file('example2.rb', <<~RUBY)
# frozen_string_literal: true
\tx = 0
puts x
class A
def a; end
end
RUBY
# Make ConfigLoader reload the default configuration so that its
# absolute Exclude paths will point into this example's work directory.
RuboCop::ConfigLoader.default_configuration = nil
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to include('Created .rubocop_todo.yml.')
expected =
['# This configuration was generated by',
'# `rubocop --auto-gen-config`',
/# on .* using RuboCop version .*/,
'# The point is for the user to remove these configuration records',
'# one by one as the offenses are removed from the code base.',
'# Note that changes in the inspected code, or installation of new',
'# versions of RuboCop, may require this file to be generated ' \
'again.',
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'Layout/CommentIndentation:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 2',
'# Cop supports --auto-correct.',
'# Configuration parameters: EnforcedStyle.',
'# SupportedStyles: normal, indented_internal_methods',
'Layout/IndentationConsistency:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: IndentationWidth, EnforcedStyle.',
'# SupportedStyles: spaces, tabs',
'Layout/IndentationStyle:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'Layout/InitialIndentation:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowForAlignment, ' \
'EnforcedStyleForExponentOperator.',
'# SupportedStylesForExponentOperator: space, no_space',
'Layout/SpaceAroundOperators:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 2',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowInHeredoc.',
'Layout/TrailingWhitespace:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 1',
'# Configuration parameters: AllowedConstants.',
'Style/Documentation:',
' Exclude:',
" - 'spec/**/*'", # Copied from default configuration
" - 'test/**/*'", # Copied from default configuration
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Configuration parameters: AllowedVariables.',
'Style/GlobalVars:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 2',
'# Cop supports --auto-correct.',
'# Configuration parameters: AutoCorrect, AllowHeredoc, ' \
'AllowURI, URISchemes, IgnoreCopDirectives, ' \
'IgnoredPatterns.',
'# URISchemes: http, https',
'Layout/LineLength:',
' Max: 130']
actual = File.read('.rubocop_todo.yml').split($RS)
expected.each_with_index do |line, ix|
if line.is_a?(String)
expect(actual[ix]).to eq(line)
else
expect(actual[ix]).to match(line)
end
end
expect(actual.size).to eq(expected.size)
end
it 'can generate Exclude properties with a given limit' do
create_file('example1.rb', ['# frozen_string_literal: true',
'',
'$x= 0 ',
'#' * 130,
'#' * 125,
'y ',
'puts x'])
create_file('example2.rb', ['# frozen_string_literal: true',
'',
'#' * 125,
"\tx = 0",
'puts x '])
expect(cli.run(['--auto-gen-config', '--exclude-limit', '1'])).to eq(0)
expected =
['# This configuration was generated by',
'# `rubocop --auto-gen-config --exclude-limit 1`',
/# on .* using RuboCop version .*/,
'# The point is for the user to remove these configuration records',
'# one by one as the offenses are removed from the code base.',
'# Note that changes in the inspected code, or installation of new',
'# versions of RuboCop, may require this file to be generated ' \
'again.',
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'Layout/CommentIndentation:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: EnforcedStyle.',
'# SupportedStyles: normal, indented_internal_methods',
'Layout/IndentationConsistency:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: IndentationWidth, EnforcedStyle.',
'# SupportedStyles: spaces, tabs',
'Layout/IndentationStyle:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'Layout/InitialIndentation:',
' Exclude:',
" - 'example2.rb'",
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowForAlignment, ' \
'EnforcedStyleForExponentOperator.',
'# SupportedStylesForExponentOperator: space, no_space',
'Layout/SpaceAroundOperators:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 3',
'# Cop supports --auto-correct.',
'# Configuration parameters: AllowInHeredoc.',
'Layout/TrailingWhitespace:',
' Enabled: false', # Offenses in 2 files, limit is 1, so no Exclude
'',
'# Offense count: 1',
'# Configuration parameters: AllowedVariables.',
'Style/GlobalVars:',
' Exclude:',
" - 'example1.rb'",
'',
'# Offense count: 3',
'# Cop supports --auto-correct.',
'# Configuration parameters: AutoCorrect, AllowHeredoc, ' \
'AllowURI, URISchemes, IgnoreCopDirectives, ' \
'IgnoredPatterns.',
'# URISchemes: http, https',
'Layout/LineLength:',
' Max: 130']
actual = File.read('.rubocop_todo.yml').split($RS)
expected.each_with_index do |line, ix|
if line.is_a?(String)
expect(actual[ix]).to eq(line)
else
expect(actual[ix]).to match(line)
end
end
expect(actual.size).to eq(expected.size)
end
context 'for existing configuration with Exclude' do
before do
create_file('example1.rb', ['# frozen_string_literal: true', '', 'y '])
create_file('example2.rb', ['# frozen_string_literal: true', '', 'x = 0 ', 'puts x'])
end
it 'generates Excludes that appear in .rubocop.yml' do
create_file('.rubocop.yml', <<~YAML)
Layout/TrailingWhitespace:
Exclude:
- 'example1.rb'
YAML
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stderr.string.chomp)
.to eq('`Layout/TrailingWhitespace: Exclude` in `.rubocop.yml` overrides a generated ' \
'`Exclude` in `.rubocop_todo.yml`. Either remove ' \
'`Layout/TrailingWhitespace: Exclude` or add `inherit_mode: merge: - Exclude`.')
expected = <<~YAML
Layout/TrailingWhitespace:
Exclude:
- 'example1.rb'
- 'example2.rb'
YAML
actual = File.read('.rubocop_todo.yml').lines.reject { |line| line =~ /^(#.*)?$/ }
expect(actual.join).to eq(expected)
$stdout = StringIO.new
expect(cli.run(['--format', 'offenses'])).to eq(1)
expect($stdout.string.lines.grep(%r{/})).to eq(["1 Layout/TrailingWhitespace\n"])
end
shared_examples 'leaves out Excludes' do |merge_style, config|
it "leaves out Excludes that appear in .rubocop.yml but are merged #{merge_style}" do
create_file('.rubocop.yml', config)
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stderr.string).to eq('')
expected = <<~YAML
Layout/TrailingWhitespace:
Exclude:
- 'example2.rb'
YAML
actual = File.read('.rubocop_todo.yml').lines.reject { |line| line =~ /^(#.*)?$/ }
expect(actual.join).to eq(expected)
expect(cli.run([])).to eq(0)
end
end
include_examples 'leaves out Excludes', 'globally', <<~YAML
inherit_mode:
merge:
- Exclude
Layout/TrailingWhitespace:
Exclude:
- 'example1.rb'
YAML
include_examples 'leaves out Excludes', 'for the cop', <<~YAML
Layout/TrailingWhitespace:
inherit_mode:
merge:
- Exclude
Exclude:
- 'example1.rb'
YAML
end
it 'does not generate configuration for the Syntax cop' do
create_file('example1.rb', <<~RUBY)
# frozen_string_literal: true
x = < # Syntax error
puts x
RUBY
create_file('example2.rb', <<~RUBY)
# frozen_string_literal: true
\tx = 0
puts x
RUBY
expect(cli.run(['--auto-gen-config'])).to eq(0)
expect($stderr.string).to eq('')
actual = File.read('.rubocop_todo.yml').split($RS)
date_stamp = actual.slice!(2)
expect(date_stamp).to match(/# on .* using RuboCop version .*/)
expect(actual.join("\n")).to eq(<<~TEXT.chomp)
# This configuration was generated by
# `rubocop --auto-gen-config`
# The point is for the user to remove these configuration records
# one by one as the offenses are removed from the code base.
# Note that changes in the inspected code, or installation of new
# versions of RuboCop, may require this file to be generated again.
# Offense count: 1
# Cop supports --auto-correct.
Layout/CommentIndentation:
Exclude:
- 'example2.rb'
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: EnforcedStyle.
# SupportedStyles: normal, indented_internal_methods
Layout/IndentationConsistency:
Exclude:
- 'example2.rb'
# Offense count: 1
# Cop supports --auto-correct.
# Configuration parameters: IndentationWidth, EnforcedStyle.
# SupportedStyles: spaces, tabs
Layout/IndentationStyle:
Exclude:
- 'example2.rb'
# Offense count: 1
# Cop supports --auto-correct.
Layout/InitialIndentation:
Exclude:
- 'example2.rb'
TEXT
end
it 'generates a todo list that removes the reports' do
create_file('example.rb', ['# frozen_string_literal: true', '', 'y.gsub!(/abc\/xyz/, x)'])
expect(cli.run(%w[--format emacs])).to eq(1)
expect($stdout.string).to eq(
"#{abs('example.rb')}:3:9: C: [Correctable] Style/RegexpLiteral: Use `%r` " \
"around regular expression.\n"
)
expect(cli.run(['--auto-gen-config'])).to eq(0)
expected =
['# This configuration was generated by',
'# `rubocop --auto-gen-config`',
/# on .* using RuboCop version .*/,
'# The point is for the user to remove these configuration records',
'# one by one as the offenses are removed from the code base.',
'# Note that changes in the inspected code, or installation of new',
'# versions of RuboCop, may require this file to be generated ' \
'again.',
'',
'# Offense count: 1',
'# Cop supports --auto-correct.',
'# Configuration parameters: EnforcedStyle, AllowInnerSlashes.',
'# SupportedStyles: slashes, percent_r, mixed',
'Style/RegexpLiteral:',
' Exclude:',
" - 'example.rb'"]
actual = File.read('.rubocop_todo.yml').split($RS)
expected.each_with_index do |line, ix|
if line.is_a?(String)
expect(actual[ix]).to eq(line)
else
expect(actual[ix]).to match(line)
end
end
expect(actual.size).to eq(expected.size)
$stdout = StringIO.new
result = cli.run(%w[--config .rubocop_todo.yml --format emacs])
expect($stdout.string).to eq('')
expect(result).to eq(0)
end
it 'does not include offense counts when --no-offense-counts is used' do
create_file('example1.rb', ['# frozen_string_literal: true',
'',
'$x= 0 ',
'#' * 130,
'#' * 125,
'y ',
'puts x'])
create_file('example2.rb', <<~RUBY)
# frozen_string_literal: true
\tx = 0
puts x
class A
def a; end
end
RUBY
# Make ConfigLoader reload the default configuration so that its
# absolute Exclude paths will point into this example's work directory.
RuboCop::ConfigLoader.default_configuration = nil
expect(cli.run(['--auto-gen-config', '--no-offense-counts'])).to eq(0)
expect($stderr.string).to eq('')
expect($stdout.string).to include('Created .rubocop_todo.yml.')
expected =
['# This configuration was generated by',
'# `rubocop --auto-gen-config --no-offense-counts`',
/# on .* using RuboCop version .*/,
'# The point is for the user to remove these configuration records',
'# one by one as the offenses are removed from the code base.',
'# Note that changes in the inspected code, or installation of new',
'# versions of RuboCop, may require this file to be generated ' \
'again.',
'',