ash/test/resource/attributes_test.exs

defmodule Ash.Test.Resource.AttributesTest do
  @moduledoc false
  use ExUnit.Case, async: true

  defmacrop defposts(do: body) do
    quote do
      defmodule Post do
        @moduledoc false
        use Ash.Resource

        attributes do
          attribute :id, :uuid, primary_key?: true, default: &Ecto.UUID.generate/0
        end

        unquote(body)
      end
    end
  end

  describe "representation" do
    test "attributes are persisted on the resource properly" do
      defposts do
        attributes do
          attribute :foo, :string
        end
      end

      assert [_, %Ash.Resource.Attribute{name: :foo, type: Ash.Type.String, primary_key?: false}] =
               Ash.attributes(Post)
    end
  end

  describe "validation" do
    test "raises if the attribute name is not an atom" do
      assert_raise(
        Ash.Error.ResourceDslError,
        "attributes -> attribute -> 10:\n  expected :name to be an atom, got: 10",
        fn ->
          defposts do
            attributes do
              attribute 10, :string
            end
          end
        end
      )
    end

    test "raises if the type is not a known type" do
      assert_raise(
        Ash.Error.ResourceDslError,
        "attributes -> attribute -> foo:\n  Attribute type must be a built in type or a type module, got: 10",
        fn ->
          defposts do
            attributes do
              attribute :foo, 10
            end
          end
        end
      )
    end

    test "raises if you pass an invalid value for `primary_key?`" do
      assert_raise(
        Ash.Error.ResourceDslError,
        "attributes -> attribute -> foo:\n  expected :primary_key? to be an boolean, got: 10",
        fn ->
          defposts do
            attributes do
              attribute :foo, :string, primary_key?: 10
            end
          end
        end
      )
    end
  end
end