add tbd fees (#10)

* add tbd fees

* add hans as codeowner

* nil values in empty amount rather than tbd

.github/CODEOWNERS

@@ -1 +1 @@
-* @aryanbhasin @coburncoburn @hayesgm
+* @aryanbhasin @coburncoburn @hayesgm @cwang25

lib/circlex/struct/amount.ex

@@ -4,6 +4,13 @@ defmodule Circlex.Struct.Amount do
 
   defstruct [:amount, :currency]
 
+  def deserialize(nil) do
+    %__MODULE__{
+      amount: nil,
+      currency: nil
+    }
+  end
+
   def deserialize(amount) do
     %__MODULE__{
       amount: fetch(amount, :amount),

mix.exs

@@ -4,7 +4,7 @@ defmodule Circlex.MixProject do
   def project do
     [
       app: :circlex_api,
-      version: "0.1.10",
+      version: "0.1.11",
       elixir: "~> 1.13",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,

test/circlex/struct/payout_test.exs

@@ -41,6 +41,7 @@ defmodule Circlex.Struct.PayoutTest do
   }
 
   @payout_ser_with_external_ref Map.put(@payout_ser, :externalRef, "ext_ref")
+  @payout_ser_without_fees Map.delete(@payout_ser, :fees)
 
   describe "deserialize" do
     test "with external ref" do
@@ -50,6 +51,12 @@ defmodule Circlex.Struct.PayoutTest do
     test "without external ref" do
       assert Payout.deserialize(@payout_ser) == @payout
     end
+
+    test "without fees" do
+      assert Payout.deserialize(@payout_ser_without_fees) ==
+               @payout
+               |> Map.put(:fees, %Circlex.Struct.Amount{amount: nil, currency: nil})
+    end
   end
 
   describe "serialize" do