Add multipart request parsing test with bracketed parameter key. References #8449.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6831 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/test/controller/request_test.rb

@@ -652,6 +652,10 @@ def test_single_parameter
     assert_equal({ 'foo' => 'bar' }, params)
   end
 
+  def test_bracketed_param
+    assert_equal({ 'foo' => { 'baz' => 'bar'}}, process('bracketed_param'))
+  end
+
   def test_text_file
     params = process('text_file')
     assert_equal %w(file foo), params.keys.sort

actionpack/test/fixtures/multipart/bracketed_param

+--AaB03x
+Content-Disposition: form-data; name="foo[baz]"
+
+bar
+--AaB03x--