Use match? where we don't need MatchData

actioncable/test/client_test.rb

@@ -91,7 +91,7 @@ class ClientTest < ActionCable::TestCase
 
       rescue RuntimeError => ex
         # Work around https://bugs.ruby-lang.org/issues/13239
-        raise unless ex.message =~ /can't modify frozen IOError/
+        raise unless ex.message.match?(/can't modify frozen IOError/)
 
         # Handle this as if it were the IOError: do the same as above.
         server.binder.close

actionpack/lib/action_controller/metal/http_authentication.rb

@@ -482,7 +482,7 @@ module ActionController
       def raw_params(auth)
         _raw_params = auth.sub(TOKEN_REGEX, "").split(/\s*#{AUTHN_PAIR_DELIMITERS}\s*/)
 
-        if !(_raw_params.first =~ %r{\A#{TOKEN_KEY}})
+        if !(%r{\A#{TOKEN_KEY}}.match?(_raw_params.first))
           _raw_params[0] = "#{TOKEN_KEY}#{_raw_params.first}"
         end
 

actionpack/lib/action_controller/metal/mime_responds.rb

@@ -142,7 +142,7 @@ module ActionController #:nodoc:
     #
     # You can set the variant in a +before_action+:
     #
-    #   request.variant = :tablet if request.user_agent =~ /iPad/
+    #   request.variant = :tablet if /iPad/.match?(request.user_agent)
     #
     # Respond to variants in the action just like you respond to formats:
     #

actionpack/lib/action_controller/metal/request_forgery_protection.rb

@@ -280,7 +280,7 @@ module ActionController #:nodoc:
 
       # Check for cross-origin JavaScript responses.
       def non_xhr_javascript_response? # :doc:
-        content_type =~ %r(\A(?:text|application)/javascript) && !request.xhr?
+        %r(\A(?:text|application)/javascript).match?(content_type) && !request.xhr?
       end
 
       AUTHENTICITY_TOKEN_LENGTH = 32

actionpack/lib/action_controller/metal/strong_parameters.rb

@@ -225,7 +225,7 @@ module ActionController
 
     class << self
       def nested_attribute?(key, value) # :nodoc:
-        key =~ /\A-?\d+\z/ && (value.is_a?(Hash) || value.is_a?(Parameters))
+        /\A-?\d+\z/.match?(key) && (value.is_a?(Hash) || value.is_a?(Parameters))
       end
     end
 

actionpack/lib/action_controller/test_case.rb

@@ -593,8 +593,8 @@ module ActionController
 
       private
         def scrub_env!(env)
-          env.delete_if { |k, v| k =~ /^(action_dispatch|rack)\.request/ }
+          env.delete_if { |k, v| k.match?(/^(action_dispatch|rack)\.request/) }
-          env.delete_if { |k, v| k =~ /^action_dispatch\.rescue/ }
+          env.delete_if { |k, v| k.match?(/^action_dispatch\.rescue/) }
           env.delete "action_dispatch.request.query_parameters"
           env.delete "action_dispatch.request.request_parameters"
           env["rack.input"] = StringIO.new

actionpack/lib/action_dispatch/http/content_security_policy.rb

@@ -33,7 +33,7 @@ module ActionDispatch #:nodoc:
       private
         def html_response?(headers)
           if content_type = headers[CONTENT_TYPE]
-            content_type =~ /html/
+            /html/.match?(content_type)
           end
         end
 

actionpack/lib/action_dispatch/http/feature_policy.rb

@@ -33,7 +33,7 @@ module ActionDispatch #:nodoc:
       private
         def html_response?(headers)
           if content_type = headers[CONTENT_TYPE]
-            content_type =~ /html/
+            /html/.match?(content_type)
           end
         end
 

actionpack/lib/action_dispatch/http/filter_parameters.rb

@@ -23,7 +23,7 @@ module ActionDispatch
     #   change { file: { code: "xxxx"} }
     #
     #   env["action_dispatch.parameter_filter"] = -> (k, v) do
-    #     v.reverse! if k =~ /secret/i
+    #     v.reverse! if k.match?(/secret/i)
     #   end
     #   => reverses the value to all keys matching /secret/i
     module FilterParameters

actionpack/lib/action_dispatch/http/filter_redirect.rb

@@ -27,7 +27,7 @@ module ActionDispatch
           if String === filter
             location.include?(filter)
           elsif Regexp === filter
-            location =~ filter
+            location.match?(filter)
           end
         end
       end

actionpack/lib/action_dispatch/http/mime_type.rb

@@ -290,7 +290,7 @@ module Mime
     end
 
     def html?
-      symbol == :html || @string =~ /html/
+      (symbol == :html) || /html/.match?(@string)
     end
 
     def all?; false; end

actionpack/lib/action_dispatch/http/request.rb

@@ -265,7 +265,7 @@ module ActionDispatch
     # (case-insensitive), which may need to be manually added depending on the
     # choice of JavaScript libraries and frameworks.
     def xml_http_request?
-      get_header("HTTP_X_REQUESTED_WITH") =~ /XMLHttpRequest/i
+      /XMLHttpRequest/i.match?(get_header("HTTP_X_REQUESTED_WITH"))
     end
     alias :xhr? :xml_http_request?
 
@@ -400,7 +400,7 @@ module ActionDispatch
 
     # True if the request came from localhost, 127.0.0.1, or ::1.
     def local?
-      LOCALHOST =~ remote_addr && LOCALHOST =~ remote_ip
+      LOCALHOST.match?(remote_addr) && LOCALHOST.match?(remote_ip)
     end
 
     def request_parameters=(params)

actionpack/lib/action_dispatch/middleware/ssl.rb

@@ -13,7 +13,7 @@ module ActionDispatch
   #
   #    Requests can opt-out of redirection with +exclude+:
   #
-  #      config.ssl_options = { redirect: { exclude: -> request { request.path =~ /healthcheck/ } } }
+  #      config.ssl_options = { redirect: { exclude: -> request { /healthcheck/.match?(request.path) } } }
   #
   #    Cookies will not be flagged as secure for excluded requests.
   #

actionpack/lib/action_dispatch/middleware/static.rb

@@ -83,11 +83,11 @@ module ActionDispatch
       end
 
       def gzip_encoding_accepted?(request)
-        request.accept_encoding.any? { |enc, quality| enc =~ /\bgzip\b/i }
+        request.accept_encoding.any? { |enc, quality| /\bgzip\b/i.match?(enc) }
       end
 
       def gzip_file_path(path)
-        can_gzip_mime = content_type(path) =~ /\A(?:text\/|application\/javascript)/
+        can_gzip_mime = /\A(?:text\/|application\/javascript)/.match?(content_type(path))
         gzip_path     = "#{path}.gz"
         if can_gzip_mime && File.exist?(File.join(@root, ::Rack::Utils.unescape_path(gzip_path)))
           gzip_path

actionpack/lib/action_dispatch/routing/inspector.rb

@@ -94,7 +94,7 @@ module ActionDispatch
           if filter
             @routes.select do |route|
               route_wrapper = RouteWrapper.new(route)
-              filter.any? { |default, value| route_wrapper.send(default) =~ value }
+              filter.any? { |default, value| value.match?(route_wrapper.send(default)) }
             end
           else
             @routes

actionpack/lib/action_dispatch/routing/mapper.rb

@@ -367,7 +367,7 @@ module ActionDispatch
 
           def translate_controller(controller)
             return controller if Regexp === controller
-            return controller.to_s if controller =~ /\A[a-z_0-9][a-z_0-9\/]*\z/
+            return controller.to_s if /\A[a-z_0-9][a-z_0-9\/]*\z/.match?(controller)
 
             yield
           end
@@ -403,7 +403,7 @@ module ActionDispatch
       # for root cases, where the latter is the correct one.
       def self.normalize_path(path)
         path = Journey::Router::Utils.normalize_path(path)
-        path.gsub!(%r{/(\(+)/?}, '\1/') unless path =~ %r{^/(\(+[^)]+\)){1,}$}
+        path.gsub!(%r{/(\(+)/?}, '\1/') unless %r{^/(\(+[^)]+\)){1,}$}.match?(path)
         path
       end
 
@@ -996,7 +996,7 @@ module ActionDispatch
         #
         # Requests to routes can be constrained based on specific criteria:
         #
-        #    constraints(-> (req) { req.env["HTTP_USER_AGENT"] =~ /iPhone/ }) do
+        #    constraints(-> (req) { /iPhone/.match?(req.env["HTTP_USER_AGENT"]) }) do
         #      resources :iphones
         #    end
         #
@@ -1006,7 +1006,7 @@ module ActionDispatch
         #
         #    class Iphone
         #      def self.matches?(request)
-        #        request.env["HTTP_USER_AGENT"] =~ /iPhone/
+        #        /iPhone/.match?(request.env["HTTP_USER_AGENT"])
         #      end
         #    end
         #
@@ -1916,7 +1916,7 @@ module ActionDispatch
           end
 
           def using_match_shorthand?(path)
-            path =~ %r{^/?[-\w]+/[-\w/]+$}
+            %r{^/?[-\w]+/[-\w/]+$}.match?(path)
           end
 
           def decomposed_match(path, controller, options, _path, to, via, formatted, anchor, options_constraints)

actionpack/lib/action_dispatch/routing/route_set.rb

@@ -836,7 +836,7 @@ module ActionDispatch
 
       def recognize_path(path, environment = {})
         method = (environment[:method] || "GET").to_s.upcase
-        path = Journey::Router::Utils.normalize_path(path) unless path =~ %r{://}
+        path = Journey::Router::Utils.normalize_path(path) unless %r{://}.match?(path)
         extras = environment[:extras] || {}
 
         begin

actionpack/test/controller/integration_test.rb

@@ -606,7 +606,7 @@ class MetalIntegrationTest < ActionDispatch::IntegrationTest
 
   class Poller
     def self.call(env)
-      if env["PATH_INFO"] =~ /^\/success/
+      if /^\/success/.match?(env["PATH_INFO"])
         [200, { "Content-Type" => "text/plain", "Content-Length" => "12" }, ["Hello World!"]]
       else
         [404, { "Content-Type" => "text/plain", "Content-Length" => "0" }, []]

actionpack/test/controller/log_subscriber_test.rb

@@ -139,7 +139,7 @@ class ACLogSubscriberTest < ActionController::TestCase
   def test_process_action_without_parameters
     get :show
     wait
-    assert_nil logs.detect { |l| l =~ /Parameters/ }
+    assert_nil logs.detect { |l| /Parameters/.match?(l) }
   end
 
   def test_process_action_with_parameters

actionpack/test/dispatch/request/json_params_parsing_test.rb

@@ -68,7 +68,7 @@ class JsonParamsParsingTest < ActionDispatch::IntegrationTest
       post "/parse", params: json, headers: { "CONTENT_TYPE" => "application/json", "action_dispatch.show_exceptions" => true, "action_dispatch.logger" => ActiveSupport::Logger.new(output) }
       assert_response :bad_request
       output.rewind && err = output.read
-      assert err =~ /Error occurred while parsing request parameters/
+      assert err.match?(/Error occurred while parsing request parameters/)
     end
   end
 

actionpack/test/dispatch/routing_test.rb

@@ -12,7 +12,7 @@ class TestRoutingMapper < ActionDispatch::IntegrationTest
 
   class IpRestrictor
     def self.matches?(request)
-      request.ip =~ /192\.168\.1\.1\d\d/
+      /192\.168\.1\.1\d\d/.match?(request.ip)
     end
   end
 
@@ -3823,7 +3823,7 @@ private
   end
 
   def method_missing(method, *args, &block)
-    if method.to_s =~ /_(path|url)$/
+    if method.to_s.match?(/_(path|url)$/)
       @app.routes.url_helpers.send(method, *args, &block)
     else
       super
@@ -5137,7 +5137,7 @@ class TestRecognizePath < ActionDispatch::IntegrationTest
     end
 
     def matches?(request)
-      request.path_parameters[key] =~ pattern
+      pattern.match?(request.path_parameters[key])
     end
   end
 
@@ -5147,8 +5147,8 @@ class TestRecognizePath < ActionDispatch::IntegrationTest
       get "/hash/:foo", to: "pages#show", constraints: { foo: /foo/ }
       get "/hash/:bar", to: "pages#show", constraints: { bar: /bar/ }
 
-      get "/proc/:foo", to: "pages#show", constraints: proc { |r| r.path_parameters[:foo] =~ /foo/ }
+      get "/proc/:foo", to: "pages#show", constraints: proc { |r| /foo/.match?(r.path_parameters[:foo]) }
-      get "/proc/:bar", to: "pages#show", constraints: proc { |r| r.path_parameters[:bar] =~ /bar/ }
+      get "/proc/:bar", to: "pages#show", constraints: proc { |r| /bar/.match?(r.path_parameters[:bar]) }
 
       get "/class/:foo", to: "pages#show", constraints: PageConstraint.new(:foo, /foo/)
       get "/class/:bar", to: "pages#show", constraints: PageConstraint.new(:bar, /bar/)

actionpack/test/dispatch/ssl_test.rb

@@ -42,7 +42,7 @@ class RedirectSSLTest < SSLTest
   end
 
   test "exclude can avoid redirect" do
-    excluding = { exclude: -> request { request.path =~ /healthcheck/ } }
+    excluding = { exclude: -> request { request.path.match?(/healthcheck/) } }
 
     assert_not_redirected "http://example.org/healthcheck", redirect: excluding
     assert_redirected from: "http://example.org/", redirect: excluding
@@ -209,7 +209,7 @@ class SecureCookiesTest < SSLTest
   end
 
   def test_cookies_as_not_secure_with_exclude
-    excluding = { exclude: -> request { request.domain =~ /example/ } }
+    excluding = { exclude: -> request { /example/.match?(request.domain) } }
     get headers: { "Set-Cookie" => DEFAULT }, ssl_options: { redirect: excluding }
 
     assert_cookies(*DEFAULT.split("\n"))

actiontext/lib/action_text/attachables/remote_image.rb

@@ -14,7 +14,7 @@ module ActionText
 
         private
           def content_type_is_image?(content_type)
-            content_type.to_s =~ /^image(\/.+|$)/
+            content_type.to_s.match?(/^image(\/.+|$)/)
           end
 
           def attributes_from_node(node)

actiontext/lib/action_text/attachment_gallery.rb

@@ -23,7 +23,7 @@ module ActionText
         Fragment.wrap(content).find_all(SELECTOR).select do |node|
           node.children.all? do |child|
             if child.text?
-              child.text =~ /\A(\n|\ )*\z/
+              /\A(\n|\ )*\z/.match?(child.text)
             else
               child.matches? ATTACHMENT_SELECTOR
             end

actionview/lib/action_view/helpers/text_helper.rb

@@ -228,7 +228,7 @@ module ActionView
       #   pluralize(2, 'Person', locale: :de)
       #   # => 2 Personen
       def pluralize(count, singular, plural_arg = nil, plural: plural_arg, locale: I18n.locale)
-        word = if count == 1 || count.to_s =~ /^1(\.0+)?$/
+        word = if count == 1 || count.to_s.match?(/^1(\.0+)?$/)
           singular
         else
           plural || singular.pluralize(locale)

activemodel/lib/active_model/validations/validates.rb

@@ -27,7 +27,7 @@ module ActiveModel
       #   class EmailValidator < ActiveModel::EachValidator
       #     def validate_each(record, attribute, value)
       #       record.errors.add attribute, (options[:message] || "is not an email") unless
-      #         value =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
+      #         /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i.match?(value)
       #     end
       #   end
       #
@@ -47,7 +47,7 @@ module ActiveModel
       #
       #     class TitleValidator < ActiveModel::EachValidator
       #       def validate_each(record, attribute, value)
-      #         record.errors.add attribute, "must start with 'the'" unless value =~ /\Athe/i
+      #         record.errors.add attribute, "must start with 'the'" unless /\Athe/i.match?(value)
       #       end
       #     end
       #

activerecord/lib/active_record/associations/collection_proxy.rb

@@ -100,7 +100,7 @@ module ActiveRecord
       # converting them into an array and iterating through them using
       # Array#select.
       #
-      #   person.pets.select { |pet| pet.name =~ /oo/ }
+      #   person.pets.select { |pet| /oo/.match?(pet.name) }
       #   # => [
       #   #      #<Pet id: 2, name: "Spook", person_id: 1>,
       #   #      #<Pet id: 3, name: "Choo-Choo", person_id: 1>

activerecord/test/cases/arel/nodes/node_test.rb

@@ -14,7 +14,7 @@ module Arel
       }.grep(Class).each do |klass|
         next if Nodes::SqlLiteral == klass
         next if Nodes::BindParam == klass
-        next if klass.name =~ /^Arel::Nodes::(?:Test|.*Test$)/
+        next if /^Arel::Nodes::(?:Test|.*Test$)/.match?(klass.name)
         assert klass.ancestors.include?(Nodes::Node), klass.name
       end
     end

activerecord/test/cases/fixtures_test.rb

@@ -67,7 +67,7 @@ class FixturesTest < ActiveRecord::TestCase
     end
 
     def call(_, _, _, _, values)
-      @events << values[:sql] if values[:sql] =~ /INSERT/
+      @events << values[:sql] if /INSERT/.match?(values[:sql])
     end
   end
 

activesupport/lib/active_support/backtrace_cleaner.rb

@@ -16,7 +16,7 @@ module ActiveSupport
   #
   #   bc = ActiveSupport::BacktraceCleaner.new
   #   bc.add_filter   { |line| line.gsub(Rails.root.to_s, '') } # strip the Rails.root prefix
-  #   bc.add_silencer { |line| line =~ /puma|rubygems/ } # skip any lines from puma or rubygems
+  #   bc.add_silencer { |line| /puma|rubygems/.match?(line) } # skip any lines from puma or rubygems
   #   bc.clean(exception.backtrace) # perform the cleanup
   #
   # To reconfigure an existing BacktraceCleaner (like the default one in Rails)
@@ -65,7 +65,7 @@ module ActiveSupport
     # for a given line, it will be excluded from the clean backtrace.
     #
     #   # Will reject all lines that include the word "puma", like "/gems/puma/server.rb" or "/app/my_puma_server/rb"
-    #   backtrace_cleaner.add_silencer { |line| line =~ /puma/ }
+    #   backtrace_cleaner.add_silencer { |line| /puma/.match?(line) }
     def add_silencer(&block)
       @silencers << block
     end

activesupport/lib/active_support/parameter_filter.rb

@@ -22,7 +22,7 @@ module ActiveSupport
   #   change { file: { code: "xxxx"} }
   #
   #   ActiveSupport::ParameterFilter.new([-> (k, v) do
-  #     v.reverse! if k =~ /secret/i
+  #     v.reverse! if /secret/i.match?(k)
   #   end])
   #   => reverses the value to all keys matching /secret/i
   class ParameterFilter

activesupport/test/cache/stores/mem_cache_store_test.rb

@@ -9,7 +9,7 @@ require "dalli"
 # connection pool testing.
 class SlowDalliClient < Dalli::Client
   def get(key, options = {})
-    if key =~ /latency/
+    if /latency/.match?(key)
       sleep 3
     else
       super

activesupport/test/cache/stores/redis_cache_store_test.rb

@@ -15,7 +15,7 @@ Redis::Connection.drivers.append(driver)
 # connection pool testing.
 class SlowRedis < Redis
   def get(key, options = {})
-    if key =~ /latency/
+    if /latency/.match?(key)
       sleep 3
     else
       super

activesupport/test/callbacks_test.rb

@@ -256,7 +256,7 @@ module CallbacksTest
     end
 
     def respond_to_missing?(sym)
-      sym =~ /^(log|wrap)_/ || super
+      sym.match?(/^(log|wrap)_/) || super
     end
   end
 

activesupport/test/parameter_filter_test.rb

@@ -22,7 +22,7 @@ class ParameterFilterTest < ActiveSupport::TestCase
 
       filter_words << "blah"
       filter_words << lambda { |key, value|
-        value.reverse! if key =~ /bargain/
+        value.reverse! if /bargain/.match?(key)
       }
       filter_words << lambda { |key, value, original_params|
         value.replace("world!") if original_params["barg"]["blah"] == "bar" && key == "hello"
@@ -61,7 +61,7 @@ class ParameterFilterTest < ActiveSupport::TestCase
 
       filter_words << "blah"
       filter_words << lambda { |key, value|
-        value.reverse! if key =~ /bargain/
+        value.reverse! if /bargain/.match?(key)
       }
       filter_words << lambda { |key, value, original_params|
         value.replace("world!") if original_params["barg"]["blah"] == "bar" && key == "hello"

guides/rails_guides/kindle.rb

@@ -36,7 +36,7 @@ module Kindle
     frontmatter = []
     html_pages.delete_if { |x|
       if /(toc|welcome|copyright).html/.match?(x)
-        frontmatter << x unless x =~ /toc/
+        frontmatter << x unless /toc/.match?(x)
         true
       end
     }

railties/lib/rails/code_statistics_calculator.rb

@@ -58,19 +58,19 @@ class CodeStatisticsCalculator #:nodoc:
       @lines += 1
 
       if comment_started
-        if patterns[:end_block_comment] && line =~ patterns[:end_block_comment]
+        if patterns[:end_block_comment] && patterns[:end_block_comment].match?(line)
           comment_started = false
         end
         next
       else
-        if patterns[:begin_block_comment] && line =~ patterns[:begin_block_comment]
+        if patterns[:begin_block_comment] && patterns[:begin_block_comment].match?(line)
           comment_started = true
           next
         end
       end
 
-      @classes   += 1 if patterns[:class] && line =~ patterns[:class]
+      @classes   += 1 if patterns[:class] && patterns[:class].match?(line)
-      @methods   += 1 if patterns[:method] && line =~ patterns[:method]
+      @methods   += 1 if patterns[:method] && patterns[:method].match?(line)
       if !line.match?(/^\s*$/) && (patterns[:line_comment].nil? || !line.match?(patterns[:line_comment]))
         @code_lines += 1
       end

railties/lib/rails/command/behavior.rb

@@ -44,7 +44,7 @@ module Rails
                   require path
                   return
                 rescue LoadError => e
-                  raise unless e.message =~ /#{Regexp.escape(path)}$/
+                  raise unless /#{Regexp.escape(path)}$/.match?(e.message)
                 rescue Exception => e
                   warn "[WARNING] Could not load #{command_type} #{path.inspect}. Error: #{e.message}.\n#{e.backtrace.join("\n")}"
                 end

railties/lib/rails/command/environment_argument.rb

@@ -28,7 +28,7 @@ module Rails
           if available_environments.include? env
             env
           else
-            %w( production development test ).detect { |e| e =~ /^#{env}/ } || env
+            %w( production development test ).detect { |e| /^#{env}/.match?(e) } || env
           end
         end
 

railties/lib/rails/generators/app_base.rb

@@ -400,7 +400,7 @@ module Rails
       end
 
       def os_supports_listen_out_of_the_box?
-        RbConfig::CONFIG["host_os"] =~ /darwin|linux/
+        /darwin|linux/.match?(RbConfig::CONFIG["host_os"])
       end
 
       def run_bundle

railties/lib/rails/generators/generated_attribute.rb

@@ -131,7 +131,7 @@ module Rails
       end
 
       def foreign_key?
-        !!(name =~ /_id$/)
+        /_id$/.match?(name)
       end
 
       def reference?

railties/lib/rails/test_unit/runner.rb

@@ -61,7 +61,7 @@ module Rails
         private
           def extract_filters(argv)
             # Extract absolute and relative paths but skip -n /.*/ regexp filters.
-            argv.select { |arg| arg =~ %r%^/?\w+/% && !arg.end_with?("/") }.map do |path|
+            argv.select { |arg| %r%^/?\w+/%.match?(arg) && !arg.end_with?("/") }.map do |path|
               case
               when /(:\d+)+$/.match?(path)
                 file, *lines = path.split(":")

railties/test/application/assets_test.rb

@@ -311,7 +311,7 @@ module ApplicationTests
 
       manifest = Dir["#{app_path}/public/assets/.sprockets-manifest-*.json"].first
       assets = ActiveSupport::JSON.decode(File.read(manifest))
-      assert asset_path = assets["assets"].find { |(k, _)| k && k =~ /.png/ }[1]
+      assert asset_path = assets["assets"].find { |(k, _)| /.png/.match?(k) }[1]
 
       # Load app env
       app "development"

railties/test/application/configuration_test.rb

@@ -456,7 +456,7 @@ module ApplicationTests
     test "filter_parameters should be able to set via config.filter_parameters" do
       add_to_config <<-RUBY
         config.filter_parameters += [ :foo, 'bar', lambda { |key, value|
-          value = value.reverse if key =~ /baz/
+          value = value.reverse if /baz/.match?(key)
         }]
       RUBY
 
@@ -790,7 +790,7 @@ module ApplicationTests
       end
 
       get "/"
-      assert last_response.body =~ /csrf\-param/
+      assert /csrf\-param/.match?(last_response.body)
     end
 
     test "default form builder specified as a string" do

railties/test/generators/app_generator_test.rb

@@ -678,7 +678,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
 
   def test_inclusion_of_listen_related_configuration_by_default
     run_generator
-    if RbConfig::CONFIG["host_os"] =~ /darwin|linux/
+    if /darwin|linux/.match?(RbConfig::CONFIG["host_os"])
       assert_listen_related_configuration
     else
       assert_no_listen_related_configuration
@@ -690,7 +690,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
     Object.const_set(:RUBY_ENGINE, "MyRuby")
 
     run_generator
-    if RbConfig::CONFIG["host_os"] =~ /darwin|linux/
+    if /darwin|linux/.match?(RbConfig::CONFIG["host_os"])
       assert_listen_related_configuration
     else
       assert_no_listen_related_configuration
@@ -708,7 +708,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
   def test_evented_file_update_checker_config
     run_generator
     assert_file "config/environments/development.rb" do |content|
-      if RbConfig::CONFIG["host_os"] =~ /darwin|linux/
+      if /darwin|linux/.match?(RbConfig::CONFIG["host_os"])
         assert_match(/^\s*config\.file_watcher = ActiveSupport::EventedFileUpdateChecker/, content)
       else
         assert_match(/^\s*# config\.file_watcher = ActiveSupport::EventedFileUpdateChecker/, content)

railties/test/railties/engine_test.rb

@@ -110,7 +110,7 @@ module RailtiesTest
 
         assert_no_match(/\d+_create_users/, output.join("\n"))
 
-        bukkits_migration_order = output.index(output.detect { |o| /NOTE: Migration \d+_create_sessions\.rb from bukkits has been skipped/ =~ o })
+        bukkits_migration_order = output.index(output.detect { |o| /NOTE: Migration \d+_create_sessions\.rb from bukkits has been skipped/.match?(o) })
         assert_not_nil bukkits_migration_order, "Expected migration to be skipped"
       end
     end