session_test.exs

  test "Creating a session with a GitHub code" do
    use_cassette "successful_sign_in" do
      response = conn(:post, "/api/v1/session", %{ "authorizationCode" => "dan", "format" => "json", "provider" => "github-oauth2" })
      |> DoorApi.Endpoint.call([])

      assert response.status == 201
      assert Voorhees.matches_schema?(response.resp_body, [user: [:username, :id]])
      assert Voorhees.matches_payload?(response.resp_body, %{user: %{ username: "danmcclain" } })

      current_session_request = conn(:get,  "/api/v1/session")

      current_session_response = response.cookies
      |> Enum.reduce(current_session_request, fn ({key, value}, conn) -> put_req_cookie(conn, key, value) end)
      |> DoorApi.Endpoint.call([])

      assert current_session_response.status == 200
      assert Voorhees.matches_schema?(current_session_response.resp_body, [user: [:username, :id]])
      assert Voorhees.matches_payload?(current_session_response.resp_body, %{user: %{ username: "danmcclain" } })
    end
  end