4 files changed, 7 insertions, 11 deletions
diff --git a/activesupport/test/core_ext/enumerable_test.rb b/activesupport/test/core_ext/enumerable_test.rb
index 6fcf6e8743..346dc3d208 100644
--- a/activesupport/test/core_ext/enumerable_test.rb
+++ b/activesupport/test/core_ext/enumerable_test.rb
@@ -71,14 +71,14 @@ class EnumerableTests < ActiveSupport::TestCase
   def test_index_by
     payments = GenericEnumerable.new([ Payment.new(5), Payment.new(15), Payment.new(10) ])
     assert_equal({ 5 => Payment.new(5), 15 => Payment.new(15), 10 => Payment.new(10) },
-                 payments.index_by { |p| p.price })
+                 payments.index_by(&:price))
     assert_equal Enumerator, payments.index_by.class
     if Enumerator.method_defined? :size
       assert_equal nil, payments.index_by.size
       assert_equal 42, (1..42).index_by.size
     end
     assert_equal({ 5 => Payment.new(5), 15 => Payment.new(15), 10 => Payment.new(10) },
-                 payments.index_by.each { |p| p.price })
+                 payments.index_by.each(&:price))
   end
 
   def test_many
diff --git a/activesupport/test/core_ext/hash_ext_test.rb b/activesupport/test/core_ext/hash_ext_test.rb
index 5e9fdfd872..3d2f50ce49 100644
--- a/activesupport/test/core_ext/hash_ext_test.rb
+++ b/activesupport/test/core_ext/hash_ext_test.rb
@@ -365,7 +365,7 @@ class HashExtTest < ActiveSupport::TestCase
       :member? => true }
 
     hashes.each do |name, hash|
-      method_map.sort_by { |m| m.to_s }.each do |meth, expected|
+      method_map.sort_by(&:to_s).each do |meth, expected|
         assert_equal(expected, hash.__send__(meth, 'a'),
                      "Calling #{name}.#{meth} 'a'")
         assert_equal(expected, hash.__send__(meth, :a),
diff --git a/activesupport/test/core_ext/object/try_test.rb b/activesupport/test/core_ext/object/try_test.rb
index efc6beaf02..89438675c1 100644
--- a/activesupport/test/core_ext/object/try_test.rb
+++ b/activesupport/test/core_ext/object/try_test.rb
@@ -52,11 +52,11 @@ class ObjectTryTest < ActiveSupport::TestCase
   end
 
   def test_try_only_block
-    assert_equal @string.reverse, @string.try { |s| s.reverse }
+    assert_equal @string.reverse, @string.try(&:reverse)
   end
 
   def test_try_only_block_bang
-    assert_equal @string.reverse, @string.try! { |s| s.reverse }
+    assert_equal @string.reverse, @string.try!(&:reverse)
   end
 
   def test_try_only_block_nil
diff --git a/activesupport/test/core_ext/string_ext_test.rb b/activesupport/test/core_ext/string_ext_test.rb
index e32c178951..0af207fae9 100644
--- a/activesupport/test/core_ext/string_ext_test.rb
+++ b/activesupport/test/core_ext/string_ext_test.rb
@@ -281,15 +281,11 @@ class StringInflectionsTest < ActiveSupport::TestCase
   end
 
   def test_constantize
-    run_constantize_tests_on do |string|
-      string.constantize
-    end
+    run_constantize_tests_on(&:constantize)
   end
 
   def test_safe_constantize
-    run_safe_constantize_tests_on do |string|
-      string.safe_constantize
-    end
+    run_safe_constantize_tests_on(&:safe_constantize)
   end
 end