* test_handle.rb: refine test_fallback_to_ansi

* test/fiddle/test_handle.rb (test_fallback_to_ansi): ensure that
  the fallback result equals to ANSI version.
  [ruby-core:75494] [Bug #12377]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55016 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/fiddle/test_handle.rb

@@ -186,7 +186,8 @@ module Fiddle
     if /cygwin|mingw|mswin/ =~ RUBY_PLATFORM
       def test_fallback_to_ansi
         k = Fiddle::Handle.new("kernel32.dll")
-        refute_nil(k["GetFileAttributes"])
+        ansi = k["GetFileAttributesA"]
+        assert_equal(ansi, k["GetFileAttributes"], "should fallback to ANSI version")
       end
     end
   end