Rails JSON API testing POST request with PARAMS in JSON

Question

This is a problem that has been bothering me for some time. I am building an API function that should receive data in json and response in json. My controller tests run fine

Answer 1

describe '#create' do 
  let(:email) {'andre'}
  let(:attrs) {{email: email}}
  let(:params) {{format: :json, subscription: attrs}}

  it "should return an error if there is no correct email" do
    post "/magazine_subscriptions", params
  end
end

Answer 2

I found my answer on a post here(RSpec request test merges hashes in array in POST JSON params), I think what I was doing wrong concerned the arguments to the request.

so this worked:

it "should return an error if there is no correct email" do
    params = {:subscription => {:email => "andre"}}

    post "/magazine_subscriptions", params.to_json, {'ACCEPT' => "application/json", 'CONTENT_TYPE' => 'application/json'}
end