How to post JSON data in rails 3 functional test -

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i plan use json data in both request , response in project , having problems in testing.

after searching while, find following code uses curl post json data:

curl -h "content-type:application/json" -h "accept:application/json" \     -d '{ "foo" : "bar" }' localhost:3000/api/new

in controller can access json data using params[:foo] easy. functional testing, find post , xhr (alias xml_http_request).

how can write functional test in rails achieve same effect using curl? or should test in other ways?

here's i've tried. find implementation xhr in action_controller/test_case.rb, , tried add jhr method changing 'conetent-type' , 'http_accept'. (added in test/test_helpers.rb.)

def json_http_request(request_method, action, parameters = nil, session = nil, flash = nil)   @request.env['content-type'] = 'application/json'   @request.env['http_accept'] ||= [mime::json, mime::js, mime::html, mime::xml, 'text/xml', mime::all].join(', ')   __send__(request_method, action, parameters, session, flash).tap     @request.env.delete 'content-type'     @request.env.delete 'http_accept'   end end alias jhr :json_http_request

i used in same way xhr, not work. inspected @response object , sees body " ".

i find one similar question on stack overflow it's rails 2 , answer posting raw data not work in rails 3.

i found want – post json controller's action.

post :create, {:format => 'json', :user => { :email => "test@test.com", :password => "foobar"}}

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