1 files changed, 24 insertions, 5 deletions
diff --git a/activesupport/test/message_verifier_test.rb b/activesupport/test/message_verifier_test.rb
index 5adff41653..a5748d28ba 100644
--- a/activesupport/test/message_verifier_test.rb
+++ b/activesupport/test/message_verifier_test.rb
@@ -11,7 +11,7 @@ require 'active_support/time'
 require 'active_support/json'
 
 class MessageVerifierTest < ActiveSupport::TestCase
-  
+
   class JSONSerializer
     def dump(value)
       ActiveSupport::JSON.encode(value)
@@ -21,7 +21,7 @@ class MessageVerifierTest < ActiveSupport::TestCase
       ActiveSupport::JSON.decode(value)
     end
   end
-  
+
   def setup
     @verifier = ActiveSupport::MessageVerifier.new("Hey, I'm a secret!")
     @data = { :some => "data", :now => Time.local(2010) }
@@ -43,13 +43,32 @@ class MessageVerifierTest < ActiveSupport::TestCase
     assert_not_verified("#{data}--#{hash.reverse}")
     assert_not_verified("purejunk")
   end
-  
+
   def test_alternative_serialization_method
+    prev = ActiveSupport.use_standard_json_time_format
+    ActiveSupport.use_standard_json_time_format = true
     verifier = ActiveSupport::MessageVerifier.new("Hey, I'm a secret!", :serializer => JSONSerializer.new)
     message = verifier.generate({ :foo => 123, 'bar' => Time.utc(2010) })
-    assert_equal verifier.verify(message), { "foo" => 123, "bar" => "2010-01-01T00:00:00Z" }
+    exp = { "foo" => 123, "bar" => "2010-01-01T00:00:00.000Z" }
+    assert_equal exp, verifier.verify(message)
+  ensure
+    ActiveSupport.use_standard_json_time_format = prev
   end
-  
+
+  def test_raise_error_when_argument_class_is_not_loaded
+    # To generate the valid message below:
+    #
+    #   AutoloadClass = Struct.new(:foo)
+    #   valid_message = @verifier.generate(foo: AutoloadClass.new('foo'))
+    #
+    valid_message = "BAh7BjoIZm9vbzonTWVzc2FnZVZlcmlmaWVyVGVzdDo6QXV0b2xvYWRDbGFzcwY6CUBmb29JIghmb28GOgZFVA==--f3ef39a5241c365083770566dc7a9eb5d6ace914"
+    exception = assert_raise(ArgumentError, NameError) do
+      @verifier.verify(valid_message)
+    end
+    assert_includes ["uninitialized constant MessageVerifierTest::AutoloadClass",
+                    "undefined class/module MessageVerifierTest::AutoloadClass"], exception.message
+  end
+
   def assert_not_verified(message)
     assert_raise(ActiveSupport::MessageVerifier::InvalidSignature) do
       @verifier.verify(message)