Don't convert params if the request isn't HTML - fixes rails#5341

(cherry picked from commit 7a80b69)

Conflicts:

	actionpack/test/controller/test_test.rb

actionpack/lib/action_controller/test_case.rb

@@ -147,17 +147,23 @@ def assign_parameters(routes, controller_path, action, parameters = {})
       extra_keys = routes.extra_keys(parameters)
       non_path_parameters = get? ? query_parameters : request_parameters
       parameters.each do |key, value|
-        if value.is_a? Fixnum
-          value = value.to_s
-        elsif value.is_a? Array
-          value = Result.new(value.map { |v| v.is_a?(String) ? v.dup : v })
-        elsif value.is_a? String
+        if value.is_a?(Array) && (value.frozen? || value.any?(&:frozen?))
+          value = value.map{ |v| v.duplicable? ? v.dup : v }
+        elsif value.is_a?(Hash) && (value.frozen? || value.any?{ |k,v| v.frozen? })
+          value = Hash[value.map{ |k,v| [k, v.duplicable? ? v.dup : v] }]
+        elsif value.frozen? && value.duplicable?
           value = value.dup
         end
 
         if extra_keys.include?(key.to_sym)
           non_path_parameters[key] = value
         else
+          if value.is_a?(Array)
+            value = Result.new(value.map(&:to_param))
+          else
+            value = value.to_param
+          end
+
           path_parameters[key.to_s] = value
         end
       end
@@ -426,7 +432,7 @@ def paramify_values(hash_or_array_or_value)
       def process(action, parameters = nil, session = nil, flash = nil, http_method = 'GET')
         # Ensure that numbers and symbols passed as params are converted to
         # proper params, as is the case when engaging rack.
-        parameters = paramify_values(parameters)
+        parameters = paramify_values(parameters) if html_format?(parameters)
 
         # Sanity check for required instance variables so we can give an
         # understandable error message.
@@ -507,6 +513,12 @@ def build_request_uri(action, parameters)
           @request.env["QUERY_STRING"] = query_string || ""
         end
       end
+
+      def html_format?(parameters)
+        return true unless parameters.is_a?(Hash)
+        format = Mime[parameters[:format]]
+        format.nil? || format.html?
+      end
     end
 
     # When the request.remote_addr remains the default for testing, which is 0.0.0.0, the exception is simply raised inline

actionpack/test/controller/test_test.rb

@@ -46,6 +46,10 @@ def test_uri
       render :text => request.fullpath
     end
 
+    def test_format
+      render :text => request.format
+    end
+
     def test_query_string
       render :text => request.query_string
     end
@@ -527,14 +531,34 @@ def test_params_passing_with_fixnums
     )
   end
 
+  def test_params_passing_with_fixnums_when_not_html_request
+    get :test_params, :format => 'json', :count => 999
+    parsed_params = eval(@response.body)
+    assert_equal(
+      {'controller' => 'test_test/test', 'action' => 'test_params',
+       'format' => 'json', 'count' => 999 },
+      parsed_params
+    )
+  end
+
+  def test_params_passing_path_parameter_is_string_when_not_html_request
+    get :test_params, :format => 'json', :id => 1
+    parsed_params = eval(@response.body)
+    assert_equal(
+      {'controller' => 'test_test/test', 'action' => 'test_params',
+       'format' => 'json', 'id' => '1' },
+      parsed_params
+    )
+  end
+
   def test_params_passing_with_frozen_values
     assert_nothing_raised do
-      get :test_params, :frozen => 'icy'.freeze, :frozens => ['icy'.freeze].freeze
+      get :test_params, :frozen => 'icy'.freeze, :frozens => ['icy'.freeze].freeze, :deepfreeze => { :frozen => 'icy'.freeze }.freeze
     end
     parsed_params = eval(@response.body)
     assert_equal(
       {'controller' => 'test_test/test', 'action' => 'test_params',
-       'frozen' => 'icy', 'frozens' => ['icy']},
+       'frozen' => 'icy', 'frozens' => ['icy'], 'deepfreeze' => { 'frozen' => 'icy' }},
       parsed_params
     )
   end
@@ -635,6 +659,20 @@ def test_request_protocol_is_reset_after_request
     assert_equal "http://", @response.body
   end
 
+  def test_request_format
+    get :test_format, :format => 'html'
+    assert_equal 'text/html', @response.body
+
+    get :test_format, :format => 'json'
+    assert_equal 'application/json', @response.body
+
+    get :test_format, :format => 'xml'
+    assert_equal 'application/xml', @response.body
+
+    get :test_format
+    assert_equal 'text/html', @response.body
+  end
+
   def test_should_have_knowledge_of_client_side_cookie_state_even_if_they_are_not_set
     cookies['foo'] = 'bar'
     get :no_op