ruby - Sinatra unit test - post with JSON body -

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i trying build unit test rest api built using sinatra. right want test echo function works right. echo uses post , return exact same payload post. still new ruby, forgive me if don't use proper lingo.

here code want test:

post '/echo'   request.body.read end

this unit test trying make:

env['rack_env'] = 'test' require './rest_server' require 'test/unit' require 'rack/test' require 'json'  class restserver < test::unit::testcase    def app     sinatra::application   end    def test_check_methods     data = '{"datain": "hello"}'     response = post '/echo', json.parse(data)     assert.last_response.ok?     assert(response.body == data)   end end

with above code, here error:

nomethoderror: undefined method `datain' sinatra::application:class     /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1285:in `block in compile!'     /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1285:in `each_pair'     /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1285:in `compile!'     /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1267:in `route'     /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1256:in `post'     /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1688:in `block (2 levels) in delegate'     /users/barrywilliams/rubymineprojects/project/rest_server_test.rb:20:in `test_check_methods'

if try doing without json.parse, 

nomethoderror: undefined method `key?' "{\"datain\": \"hello\"}":string /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1265:in `route' /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1256:in `post' /users/barrywilliams/.rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.3.4/lib/sinatra/base.rb:1688:in `block (2 levels) in delegate' /users/barrywilliams/rubymineprojects/project/rest_server_test.rb:20:in `test_check_methods'

if try doing data = 'hello', same undefined method 'key?' error

i've tried suggestion, no success: http://softwareblog.morlok.net/2010/12/18/testing-post-with-racktest/ error saying post takes 2 arguments, not 3.

so, in summary, need able make call, have code i'm testing receive call , return response, need able read response , verify original data. right looks it's getting stuck @ making call.

thanks, barry

rack test give response body in last_response.body, no need save variable. you're not echoing you've sent - data in code you've given json, converted hash , posted that, it's not going match comes back. either send json, or convert json in sinatra route if want (see https://stackoverflow.com/a/12138793/335847 more).

in sinatra app:

require 'json'  post '/echo'   # don't use request.body.read you're not posting json   params.to_json end

and in test file:

def test_check_methods   data = '{"datain": "hello"}'   post '/echo', json.parse(data)   assert.last_response.ok?   assert(last_response.body == data) end

if do end wanting post json (which think not idea if it's easy convert or have data hash) use :provides => "json" condition route, , consider using rack::test::accepts make life easier writing test (note: that's shameless plug gem wrote;)


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