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This is my action:
def my_action str = ... # get json str somehow render :json => str end This is my test:
test "my test" do post(:my_action, {'param' => "value"} assert_response :success end I want to add another assertion that the emitted JSON contains some value. How can I do it in a controller unit-test, not via parsing the view result?
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Unit testing controllers. Set up unit tests of controller actions to focus on the controller's behavior. A controller unit test avoids scenarios such as filters, routing, and model binding. Tests that cover the interactions among components that collectively respond to a request are handled by integration tests.
Controller logic can be tested using automated integration tests, separate and distinct from unit tests for individual components. -1: A unit test for a controller could be pointless.
The assertion should be that jsonData is an array and that jsonData[0] contains keys, or that all elements in jsonData contain your keys, depending on your specification. So, FWIW, this in Object, not JSON; JSON is a string. You can use jsonData.
Just like people commented above, this would be a functional test.
The best way would probably be making a request, parsing the JSON response body, and matching it to the expected result.
If I have companies_controller in Rspec using FactoryGirl:
describe "GET 'show'" do before(:each) do @company = Factory(:company) get 'show', :format => :json, :id => @company.id end it "should be successful" do response.should be_success end it "should return the correct company when correct id is passed" do body = JSON.parse(response.body) body["id"].should == @company.id end end You can test other attributes the same way. Also, I normally have invalid context where I would try to pass invalid parameters.
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