3 files changed, 6 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index 837974bc85..8253a76383 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -26,7 +26,7 @@ module ActiveSupport
     end
 
     class << self
-      # Creates a new CacheStore object according to the given options.
+      # Creates a new Store object according to the given options.
       #
       # If no arguments are passed to this method, then a new
       # ActiveSupport::Cache::MemoryStore object will be returned.
diff --git a/activesupport/lib/active_support/core_ext/object/try.rb b/activesupport/lib/active_support/core_ext/object/try.rb
index 69be6c4abc..c67eb25b68 100644
--- a/activesupport/lib/active_support/core_ext/object/try.rb
+++ b/activesupport/lib/active_support/core_ext/object/try.rb
@@ -8,7 +8,7 @@ module ActiveSupport
 
     def try!(*a, &b)
       if a.empty? && block_given?
-        if b.arity.zero?
+        if b.arity == 0
           instance_eval(&b)
         else
           yield self
diff --git a/activesupport/lib/active_support/testing/method_call_assertions.rb b/activesupport/lib/active_support/testing/method_call_assertions.rb
index 155d3344d3..fccaa54f40 100644
--- a/activesupport/lib/active_support/testing/method_call_assertions.rb
+++ b/activesupport/lib/active_support/testing/method_call_assertions.rb
@@ -1,11 +1,13 @@
+require 'minitest/mock'
+
 module ActiveSupport
   module Testing
     module MethodCallAssertions # :nodoc:
       private
-        def assert_called(object, method_name, message = nil, times: 1)
+        def assert_called(object, method_name, message = nil, times: 1, returns: nil)
           times_called = 0
 
-          object.stub(method_name, proc { times_called += 1 }) { yield }
+          object.stub(method_name, proc { times_called += 1; returns }) { yield }
 
           error = "Expected #{method_name} to be called #{times} times, " \
             "but was called #{times_called} times"