4 files changed, 8 insertions, 8 deletions
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 63c9ab04c9..57c076eac6 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -53,7 +53,7 @@ I18n.enforce_available_locales = false
 # Register danish language for testing
 I18n.backend.store_translations 'da', {}
 I18n.backend.store_translations 'pt-BR', {}
-ORIGINAL_LOCALES = I18n.available_locales.map {|locale| locale.to_s }.sort
+ORIGINAL_LOCALES = I18n.available_locales.map(&:to_s).sort
 
 FIXTURE_LOAD_PATH = File.join(File.dirname(__FILE__), 'fixtures')
 FIXTURES = Pathname.new(FIXTURE_LOAD_PATH)
diff --git a/actionpack/test/controller/filters_test.rb b/actionpack/test/controller/filters_test.rb
index b2b01b3fa9..38533dbf23 100644
--- a/actionpack/test/controller/filters_test.rb
+++ b/actionpack/test/controller/filters_test.rb
@@ -10,7 +10,7 @@ class ActionController::Base
 
     def before_actions
       filters = _process_action_callbacks.select { |c| c.kind == :before }
-      filters.map! { |c| c.raw_filter }
+      filters.map!(&:raw_filter)
     end
   end
 
diff --git a/actionpack/test/controller/routing_test.rb b/actionpack/test/controller/routing_test.rb
index f46b32e019..9caa5cbe57 100644
--- a/actionpack/test/controller/routing_test.rb
+++ b/actionpack/test/controller/routing_test.rb
@@ -884,13 +884,13 @@ class RouteSetTest < ActiveSupport::TestCase
     set.draw { get ':controller/(:action(/:id))' }
     path, extras = set.generate_extras(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
     assert_equal "/foo/bar/15", path
-    assert_equal %w(that this), extras.map { |e| e.to_s }.sort
+    assert_equal %w(that this), extras.map(&:to_s).sort
   end
 
   def test_extra_keys
     set.draw { get ':controller/:action/:id' }
     extras = set.extra_keys(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
-    assert_equal %w(that this), extras.map { |e| e.to_s }.sort
+    assert_equal %w(that this), extras.map(&:to_s).sort
   end
 
   def test_generate_extras_not_first
@@ -900,7 +900,7 @@ class RouteSetTest < ActiveSupport::TestCase
     end
     path, extras = set.generate_extras(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
     assert_equal "/foo/bar/15", path
-    assert_equal %w(that this), extras.map { |e| e.to_s }.sort
+    assert_equal %w(that this), extras.map(&:to_s).sort
   end
 
   def test_generate_not_first
@@ -918,7 +918,7 @@ class RouteSetTest < ActiveSupport::TestCase
       get ':controller/:action/:id'
     end
     extras = set.extra_keys(:controller => "foo", :action => "bar", :id => 15, :this => "hello", :that => "world")
-    assert_equal %w(that this), extras.map { |e| e.to_s }.sort
+    assert_equal %w(that this), extras.map(&:to_s).sort
   end
 
   def test_draw
diff --git a/actionpack/test/dispatch/mime_type_test.rb b/actionpack/test/dispatch/mime_type_test.rb
index ad6335f132..3017a9c2d6 100644
--- a/actionpack/test/dispatch/mime_type_test.rb
+++ b/actionpack/test/dispatch/mime_type_test.rb
@@ -83,7 +83,7 @@ class MimeTypeTest < ActiveSupport::TestCase
   test "parse broken acceptlines" do
     accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/*,,*/*;q=0.5"
     expect = [Mime::HTML, Mime::XML, "image/*", Mime::TEXT, Mime::ALL]
-    assert_equal expect, Mime::Type.parse(accept).collect { |c| c.to_s }
+    assert_equal expect, Mime::Type.parse(accept).collect(&:to_s)
   end
 
   # Accept header send with user HTTP_USER_AGENT: Mozilla/4.0
@@ -91,7 +91,7 @@ class MimeTypeTest < ActiveSupport::TestCase
   test "parse other broken acceptlines" do
     accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword,  , pronto/1.00.00, sslvpn/1.00.00.00, */*"
     expect = ['image/gif', 'image/x-xbitmap', 'image/jpeg','image/pjpeg', 'application/x-shockwave-flash', 'application/vnd.ms-excel', 'application/vnd.ms-powerpoint', 'application/msword', 'pronto/1.00.00', 'sslvpn/1.00.00.00', Mime::ALL]
-    assert_equal expect, Mime::Type.parse(accept).collect { |c| c.to_s }
+    assert_equal expect, Mime::Type.parse(accept).collect(&:to_s)
   end
 
   test "custom type" do