Enable pending cops

Note that `Gemspec/RequireMFA` is enabled.

Please refer to the article below for RubyGems MFA status.
https://blog.rubygems.org/2022/08/15/requiring-mfa-on-popular-gems.html

.rubocop.yml

@@ -1,5 +1,11 @@
 AllCops:
   TargetRubyVersion: 2.7
+  NewCops: enable
+
+# Suppress noise for obvious operator precedence.
+Lint/AmbiguousOperatorPrecedence:
+  Description: Checks for expressions containing multiple binary operations with ambiguous precedence.
+  Enabled: false
 
 Layout/LineLength:
   Description: This cop checks the length of lines in the source code. The maximum length is configurable.
@@ -53,6 +59,10 @@ Style/Documentation:
   Description: This cop checks for missing top-level documentation of classes and modules.
   Enabled: false
 
+Style/DocumentDynamicEvalDefinition:
+  Description: When using `class_eval` (or other `eval`) with string interpolation, add a comment block showing its appearance if interpolated.
+  Enabled: false
+
 Style/EvalWithLocation:
   Description: This cop checks eval method usage. eval can receive source location metadata, that are filename and line number.
   Exclude:

faker.gemspec

@@ -3,6 +3,7 @@
 $LOAD_PATH.push File.expand_path('lib', __dir__)
 require 'faker/version'
 
+# rubocop:todo Gemspec/RequireMFA
 Gem::Specification.new do |spec|
   spec.name        = 'faker'
   spec.version     = Faker::VERSION
@@ -42,3 +43,4 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency('timecop', '0.9.5')
   spec.add_development_dependency('yard', '0.9.27')
 end
+# rubocop:enable Gemspec/RequireMFA

lib/faker.rb

@@ -92,7 +92,7 @@ def regexify(reg)
           .gsub(/(\\?.)\{(\d+),(\d+)\}/) { |_match| Regexp.last_match(1) * sample(Array(Range.new(Regexp.last_match(2).to_i, Regexp.last_match(3).to_i))) }                      # A{1,2} becomes A or AA or \d{3} becomes \d\d\d
           .gsub(/\((.*?)\)/) { |match| sample(match.gsub(/[()]/, '').split('|')) } # (this|that) becomes 'this' or 'that'
           .gsub(/\[([^\]]+)\]/) { |match| match.gsub(/(\w-\w)/) { |range| sample(Array(Range.new(*range.split('-')))) } } # All A-Z inside of [] become C (or X, or whatever)
-          .gsub(/\[([^\]]+)\]/) { |_match| sample(Regexp.last_match(1).split('')) } # All [ABC] become B (or A or C)
+          .gsub(/\[([^\]]+)\]/) { |_match| sample(Regexp.last_match(1).chars) } # All [ABC] become B (or A or C)
           .gsub('\d') { |_match| sample(Numbers) }
           .gsub('\w') { |_match| sample(Letters) }
       end

lib/faker/blockchain/aeternity.rb

@@ -61,7 +61,7 @@ def oracle
         def rand_strings(length = 50)
           hex_alphabet = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
           var = +''
-          length.times { var << sample(shuffle(hex_alphabet.split(''))) }
+          length.times { var << sample(shuffle(hex_alphabet.chars)) }
           var
         end
       end

lib/faker/blockchain/ethereum.rb

@@ -17,7 +17,7 @@ class << self
         def address
           hex_alphabet = '0123456789abcdef'
           var = +'0x'
-          40.times { var << sample(shuffle(hex_alphabet.split(''))) }
+          40.times { var << sample(shuffle(hex_alphabet.chars)) }
           var
         end
       end

lib/faker/blockchain/tezos.rb

@@ -125,7 +125,7 @@ def secret_key
         # @return [String]
         def encode_tz(prefix, payload_size)
           prefix = PREFIXES.fetch(prefix)
-          packed = prefix.map(&:chr).join('') + Faker::Config.random.bytes(payload_size)
+          packed = prefix.map(&:chr).join + Faker::Config.random.bytes(payload_size)
           checksum = OpenSSL::Digest::SHA256.digest(OpenSSL::Digest::SHA256.digest(packed))[0..3]
           Faker::Base58.encode(packed + checksum)
         end

lib/faker/default/bank.rb

@@ -145,7 +145,7 @@ def bsb_number
       private
 
       def checksum(num_string)
-        num_array = num_string.split('').map(&:to_i)
+        num_array = num_string.chars.map(&:to_i)
         (
           7 * (num_array[0] + num_array[3] + num_array[6]) +
             3 * (num_array[1] + num_array[4] + num_array[7]) +
@@ -194,8 +194,8 @@ def valid_checksum?(routing_number, checksum)
 
       def compile_fraction(routing_num)
         prefix = (1..50).to_a.map(&:to_s).sample
-        numerator = routing_num.split('')[5..8].join.to_i.to_s
-        denominator = routing_num.split('')[0..4].join.to_i.to_s
+        numerator = routing_num.chars[5..8].join.to_i.to_s
+        denominator = routing_num.chars[0..4].join.to_i.to_s
         "#{prefix}-#{numerator}/#{denominator}"
       end
 

lib/faker/default/chile_rut.rb

@@ -37,7 +37,7 @@ def rut(legacy_min_rut = NOT_GIVEN, legacy_fixed = NOT_GIVEN, min_rut: 1, fixed:
       #
       # @faker.version 1.9.2
       def dv
-        split_reversed_rut = @last_rut.to_s.reverse.split('')
+        split_reversed_rut = @last_rut.to_s.reverse.chars
         seq = [2, 3, 4, 5, 6, 7]
         i = 0
         digit_sum = split_reversed_rut.reduce(0) do |sum, n|

lib/faker/default/code.rb

@@ -206,7 +206,7 @@ def generate_imei
         str[len - 1] = (10 - (sum % 10)) % 10
 
         # Output the IMEI value.
-        str.join('')
+        str.join
       end
 
       def generate_base10_isbn
@@ -222,34 +222,34 @@ def generate_base13_isbn
       end
 
       def sum(values)
-        values.split(//).each_with_index.inject(0) do |sum, (value, index)|
+        values.chars.each_with_index.inject(0) do |sum, (value, index)|
           sum + yield(value, index)
         end
       end
 
       def generate_base8_ean
         values = regexify(/\d{7}/)
-        check_digit = 10 - values.split(//).each_with_index.inject(0) { |s, (v, i)| s + v.to_i * EAN_CHECK_DIGIT8[i] } % 10
+        check_digit = 10 - values.chars.each_with_index.inject(0) { |s, (v, i)| s + v.to_i * EAN_CHECK_DIGIT8[i] } % 10
         values << (check_digit == 10 ? 0 : check_digit).to_s
       end
 
       def generate_base13_ean
         values = regexify(/\d{12}/)
-        check_digit = 10 - values.split(//).each_with_index.inject(0) { |s, (v, i)| s + v.to_i * EAN_CHECK_DIGIT13[i] } % 10
+        check_digit = 10 - values.chars.each_with_index.inject(0) { |s, (v, i)| s + v.to_i * EAN_CHECK_DIGIT13[i] } % 10
         values << (check_digit == 10 ? 0 : check_digit).to_s
       end
 
       EAN_CHECK_DIGIT8 = [3, 1, 3, 1, 3, 1, 3].freeze
       EAN_CHECK_DIGIT13 = [1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3].freeze
 
       def rut_verificator_digit(rut)
-        total = rut.to_s.rjust(8, '0').split(//).zip(%w[3 2 7 6 5 4 3 2]).collect { |a, b| a.to_i * b.to_i }.inject(:+)
+        total = rut.to_s.rjust(8, '0').chars.zip(%w[3 2 7 6 5 4 3 2]).collect { |a, b| a.to_i * b.to_i }.inject(:+)
         (11 - total % 11).to_s.gsub(/10/, 'k').gsub(/11/, '0')
       end
 
       def generate_nric_check_alphabet(values, prefix)
         weight = %w[2 7 6 5 4 3 2]
-        total = values.split(//).zip(weight).collect { |a, b| a.to_i * b.to_i }.inject(:+)
+        total = values.chars.zip(weight).collect { |a, b| a.to_i * b.to_i }.inject(:+)
         total += 4 if prefix == 'T'
         %w[A B C D E F G H I Z J][10 - total % 11]
       end

lib/faker/default/company.rb

@@ -296,7 +296,7 @@ def polish_taxpayer_identification_number
           result = Array.new(3) { rand(1..9) } + Array.new(7) { rand(10) }
           break if (weight_sum(result, weights) % 11) == result[9]
         end
-        result.join('')
+        result.join
       end
 
       ##
@@ -321,7 +321,7 @@ def polish_register_of_national_economy(legacy_length = NOT_GIVEN, length: 9)
           random_digits = Array.new(length) { rand(10) }
           break if collect_regon_sum(random_digits) == random_digits.last
         end
-        random_digits.join('')
+        random_digits.join
       end
 
       ##
@@ -459,7 +459,7 @@ def mod11(number)
       def luhn_algorithm(number)
         multiplications = []
 
-        number.to_s.reverse.split(//).each_with_index do |digit, i|
+        number.to_s.reverse.chars.each_with_index do |digit, i|
           multiplications << if i.even?
                                digit.to_i * 2
                              else
@@ -553,7 +553,7 @@ def inn_checksum(factor, number)
       def spanish_cif_control_digit(organization_type, code)
         letters = %w[J A B C D E F G H I]
 
-        control = code.split('').each_with_index.inject(0) do |sum, (value, index)|
+        control = code.chars.each_with_index.inject(0) do |sum, (value, index)|
           if (index + 1).even?
             sum + value.to_i
           else

lib/faker/default/finance.rb

@@ -28,9 +28,9 @@ def credit_card(*types)
 
         # calculate the luhn checksum digit
         multiplier = 1
-        luhn_sum = template.gsub(/[^0-9]/, '').split('').reverse.map(&:to_i).inject(0) do |sum, digit|
+        luhn_sum = template.gsub(/[^0-9]/, '').chars.reverse.map(&:to_i).inject(0) do |sum, digit|
           multiplier = (multiplier == 2 ? 1 : 2)
-          sum + (digit * multiplier).to_s.split('').map(&:to_i).inject(0) { |digit_sum, cur| digit_sum + cur }
+          sum + (digit * multiplier).to_s.chars.map(&:to_i).inject(0) { |digit_sum, cur| digit_sum + cur }
         end
 
         # the sum plus whatever the last digit is must be a multiple of 10. So, the

lib/faker/default/id_number.rb

@@ -332,7 +332,7 @@ def south_african_id_checksum_digit(id_number)
                                             .with_index { |_, i| (i + 1).odd? }
 
         sum_of_odd_digits = odd_digits_without_last_character.map(&:to_i).reduce(:+)
-        even_digits_times_two = (even_digits.join('').to_i * 2).to_s
+        even_digits_times_two = (even_digits.join.to_i * 2).to_s
         sum_of_even_digits = even_digits_times_two.chars.map(&:to_i).reduce(:+)
 
         total_sum = sum_of_odd_digits + sum_of_even_digits

lib/faker/default/internet.rb

@@ -270,7 +270,7 @@ def fix_umlauts(legacy_string = NOT_GIVEN, string: '')
       # @example
       #   Faker::Internet.domain_word   #=> "senger"
       def domain_word
-        with_locale(:en) { Char.prepare(Company.name.split(' ').first) }
+        with_locale(:en) { Char.prepare(Company.name.split.first) }
       end
 
       ## Returns the domain suffix e.g. com, org, co, biz, info etc.
@@ -613,10 +613,10 @@ def sanitize_email_local_part(local_part)
           Array('0'..'9'),
           Array('A'..'Z'),
           Array('a'..'z'),
-          "!#$%&'*+-/=?^_`{|}~.".split(//)
+          "!#$%&'*+-/=?^_`{|}~.".chars
         ].flatten
 
-        local_part.split(//).map do |char|
+        local_part.chars.map do |char|
           char_range.include?(char) ? char : '#'
         end.join
       end

lib/faker/default/markdown.rb

@@ -27,7 +27,7 @@ def headers
       # @faker.version 1.8.0
       def emphasis
         paragraph = Faker::Lorem.paragraph(sentence_count: 3)
-        words = paragraph.split(' ')
+        words = paragraph.split
         position = rand(0..words.length - 1)
         formatting = fetch('markdown.emphasis')
         words[position] = "#{formatting}#{words[position]}#{formatting}"
@@ -50,7 +50,7 @@ def ordered_list
         number.times do |i|
           result << "#{i}. #{Faker::Lorem.sentence(word_count: 1)} \n"
         end
-        result.join('')
+        result.join
       end
 
       ##
@@ -69,7 +69,7 @@ def unordered_list
         number.times do |_i|
           result << "* #{Faker::Lorem.sentence(word_count: 1)} \n"
         end
-        result.join('')
+        result.join
       end
 
       ##

lib/faker/default/nhs.rb

@@ -21,7 +21,7 @@ def british_number
                                                            .chars
                                                            .insert(3, ' ')
                                                            .insert(7, ' ')
-                                                           .join('')
+                                                           .join
       end
 
       ##

lib/faker/default/vehicle.rb

@@ -9,7 +9,7 @@ class Vehicle < Base
     VIN_LETTERS = 'ABCDEFGHJKLMNPRSTUVWXYZ'
     VIN_MAP = '0123456789X'
     VIN_WEIGHTS = '8765432X098765432'
-    VIN_REGEX = /^([A-HJ-NPR-Z0-9]){3}[A-HJ-NPR-Z0-9]{5}[A-HJ-NPR-Z0-9]{1}[A-HJ-NPR-Z0-9]{1}[A-HJ-NPR-Z0-0]{1}[A-HJ-NPR-Z0-9]{1}\d{5}$/.freeze
+    VIN_REGEX = /^([A-HJ-NPR-Z0-9]){3}[A-HJ-NPR-Z0-9]{5}[A-HJ-NPR-Z0-9]{1}[A-HJ-NPR-Z0-9]{1}[A-HJ-NPR-Z0-]{1}[A-HJ-NPR-Z0-9]{1}\d{5}$/.freeze
     SG_CHECKSUM_WEIGHTS = [3, 14, 2, 12, 2, 11, 1].freeze
     SG_CHECKSUM_CHARS = 'AYUSPLJGDBZXTRMKHEC'
 
@@ -333,22 +333,22 @@ def calculate_vin_check_digit(vin)
       end
 
       def vin_char_to_number(char)
-        index = VIN_LETTERS.split('').index(char)
+        index = VIN_LETTERS.chars.index(char)
 
         return char.to_i if index.nil?
 
         VIN_MAP[index]
       end
 
       def singapore_checksum(plate_number)
-        padded_alphabets = format('%3s', plate_number[/^[A-Z]+/]).tr(' ', '-').split('')
-        padded_digits = format('%04d', plate_number[/\d+/]).split('').map(&:to_i)
+        padded_alphabets = format('%3s', plate_number[/^[A-Z]+/]).tr(' ', '-').chars
+        padded_digits = format('%04d', plate_number[/\d+/]).chars.map(&:to_i)
         sum = [*padded_alphabets, *padded_digits].each_with_index.reduce(0) do |memo, (char, i)|
           value = char.is_a?(Integer) ? char : char.ord - 64
           memo + (SG_CHECKSUM_WEIGHTS[i] * value)
         end
 
-        SG_CHECKSUM_CHARS.split('')[sum % 19]
+        SG_CHECKSUM_CHARS.chars[sum % 19]
       end
     end
   end

lib/faker/japanese_media/kamen_rider.rb

@@ -83,14 +83,14 @@ def eras
         end
 
         def from_eras(*input_eras, field:)
-          selected_eras = (ERAS & input_eras).yield_self do |selected|
+          selected_eras = (ERAS & input_eras).then do |selected|
             selected.empty? ? eras : selected
           end.dup
           yield(selected_eras) if block_given?
 
           raise UnavailableInEra, "#{field} is unavailable in the selected eras." if selected_eras.empty?
 
-          selected_eras.sample.yield_self do |era|
+          selected_eras.sample.then do |era|
             fetch("kamen_rider.#{era}.#{field}")
           end
         end

lib/helpers/base58.rb

@@ -7,7 +7,7 @@ def self.encode(str)
       base = alphabet.size
 
       lv = 0
-      str.split('').reverse.each_with_index { |v, i| lv += v.unpack1('C') * 256**i }
+      str.chars.reverse.each_with_index { |v, i| lv += v.unpack1('C') * 256**i }
 
       ret = +''
       while lv.positive?

script/txt2html

@@ -54,7 +54,7 @@ else
   exit!
 end
 
-template = ERB.new(File.open(template).read)
+template = ERB.new(File.read(template))
 
 title = nil
 body = nil

tasks/website.rake

@@ -11,7 +11,7 @@ desc 'Upload website files to rubyforge'
 task :website_upload do
   remote_dir = '/var/www/gforge-projects/faker/'
   local_dir = 'website'
-  sh %(rsync -acCv #{local_dir}/ #{ENV['USER']}@rubyforge.org:#{remote_dir})
+  sh %(rsync -acCv #{local_dir}/ #{ENV.fetch('USER', nil)}@rubyforge.org:#{remote_dir})
 end
 
 desc 'Generate and upload website files'

test/faker/default/test_alphanum.rb

@@ -34,14 +34,14 @@ def test_alphanumeric_with_invalid_mins
   end
 
   def test_alphanumeric_with_min_alpha
-    letters = @tester.alphanumeric(number: 5, min_alpha: 2).split('').map do |char|
+    letters = @tester.alphanumeric(number: 5, min_alpha: 2).chars.map do |char|
       char =~ /[[:alpha:]]/
     end
     assert letters.compact.size >= 2
   end
 
   def test_alphanumeric_with_min_numeric
-    numbers = @tester.alphanumeric(number: 5, min_numeric: 4).split('').map do |char|
+    numbers = @tester.alphanumeric(number: 5, min_numeric: 4).chars.map do |char|
       char =~ /[[:digit:]]/
     end
     assert numbers.compact.size >= 4