1 files changed, 9 insertions, 3 deletions
diff --git a/actionpack/test/dispatch/uploaded_file_test.rb b/actionpack/test/dispatch/uploaded_file_test.rb
index d04d5a8650..4173ce0a44 100644
--- a/actionpack/test/dispatch/uploaded_file_test.rb
+++ b/actionpack/test/dispatch/uploaded_file_test.rb
@@ -2,18 +2,24 @@ require 'abstract_unit'
 
 module ActionDispatch
   class UploadedFileTest < ActiveSupport::TestCase
+    def test_constructor_with_argument_error
+      assert_raises(ArgumentError) do
+        Http::UploadedFile.new({})
+      end
+    end
+
     def test_original_filename
-      uf = Http::UploadedFile.new(:filename => 'foo')
+      uf = Http::UploadedFile.new(:filename => 'foo', :tempfile => Object.new)
       assert_equal 'foo', uf.original_filename
     end
 
     def test_content_type
-      uf = Http::UploadedFile.new(:type => 'foo')
+      uf = Http::UploadedFile.new(:type => 'foo', :tempfile => Object.new)
       assert_equal 'foo', uf.content_type
     end
 
     def test_headers
-      uf = Http::UploadedFile.new(:head => 'foo')
+      uf = Http::UploadedFile.new(:head => 'foo', :tempfile => Object.new)
       assert_equal 'foo', uf.headers
     end