Add tests for CgiRequest#content_type

actionpack/test/controller/cgi_test.rb

@@ -168,6 +168,18 @@ def test_doesnt_interpret_request_uri_as_query_string_when_missing
   end
 end
 
+class CgiRequestContentTypeTest < BaseCgiTest
+  def test_html_content_type_verification
+    @request.env['CONTENT_TYPE'] = Mime::HTML.to_s
+    assert @request.content_type.verify_request?
+  end
+
+  def test_xml_content_type_verification
+    @request.env['CONTENT_TYPE'] = Mime::XML.to_s
+    assert !@request.content_type.verify_request?
+  end
+end
+
 class CgiRequestNeedsRewoundTest < BaseCgiTest
   def test_body_should_be_rewound
     data = 'foo'