Rspec'ing a Rails JSON Api

render_view was the missing piece: because rspec by default disables rendering of views to speed up the test. And that’s how I was stuck for days trying to find bugs in the super short json.

    describe Api::V1::TeamsController do
		render_views
		it "returns a json array of teams" do
		...
        json = JSON.parse(response.body)
        expect(json['teams']).not_to be_nil
        end
    end