How to check for a JSON response using RSpec?
You can examine the response object and verify that it contains the expected value:
@expected = { :flashcard => @flashcard, :lesson => @lesson, :success => true}.to_jsonget :action # replace with action name / params as necessaryresponse.body.should == @expectedEDIT
Changing this to a post makes it a bit trickier. Here's a way to handle it:
it "responds with JSON" do my_model = stub_model(MyModel,:save=>true) MyModel.stub(:new).with({'these' => 'params'}) { my_model } post :create, :my_model => {'these' => 'params'}, :format => :json response.body.should == my_model.to_json endNote that mock_model will not respond to to_json, so either stub_model or a real model instance is needed.
You could parse the response body like this:
parsed_body = JSON.parse(response.body)Then you can make your assertions against that parsed content.
parsed_body["foo"].should == "bar"
Building off of Kevin Trowbridge's answer
response.header['Content-Type'].should include 'application/json'