ash_phoenix/test/form_only_fields.exs

defmodule AshPhoenix.FormOnlyFieldTest do
  use ExUnit.Case

  alias AshPhoenix.Test.Post

  test "it adds the destination after transformation, and hides the original" do
    form =
      Post
      |> AshPhoenix.Form.for_create(:create)
      |> AshPhoenix.Form.add_form_only_field(
        :duration_in_seconds,
        :duration_in_minutes,
        fn value, _params ->
          if value do
            value * 60
          end
        end
      )
      |> AshPhoenix.Form.validate(%{"duration_in_minutes" => 10})

    assert %{"duration_in_seconds" => 600} = AshPhoenix.Form.params(form)
    refute Map.has_key?(AshPhoenix.Form.params(form), "duration_in_minutes")
  end

  test "it updates on validate when hiding" do
    form =
      Post
      |> AshPhoenix.Form.for_create(:create)
      |> AshPhoenix.Form.add_form_only_field(
        :duration_in_seconds,
        :duration_in_minutes,
        fn value, _params ->
          if value do
            value * 60
          end
        end
      )
      |> AshPhoenix.Form.validate(%{"duration_in_minutes" => 10})

    assert %{"duration_in_seconds" => 600} = AshPhoenix.Form.params(form)
    refute Map.has_key?(AshPhoenix.Form.params(form), "duration_in_minutes")

    form =
      form
      |> AshPhoenix.Form.validate(%{"duration_in_minutes" => 11})

    assert %{"duration_in_seconds" => 660} = AshPhoenix.Form.params(form)
    refute Map.has_key?(AshPhoenix.Form.params(form), "duration_in_minutes")
  end

  test "it adds the destination after transformation, and shows the original if hide_source? is false" do
    form =
      Post
      |> AshPhoenix.Form.for_create(:create)
      |> AshPhoenix.Form.add_form_only_field(
        :duration_in_seconds,
        :duration_in_minutes,
        fn value, _params ->
          if value do
            value * 60
          end
        end,
        hide_source?: false
      )
      |> AshPhoenix.Form.validate(%{"duration_in_minutes" => 10})

    assert %{"duration_in_minutes" => 10, "duration_in_seconds" => 600} =
             AshPhoenix.Form.params(form)
  end

  test "it updates on validate when not hiding" do
    form =
      Post
      |> AshPhoenix.Form.for_create(:create)
      |> AshPhoenix.Form.add_form_only_field(
        :duration_in_seconds,
        :duration_in_minutes,
        fn value, _params ->
          if value do
            value * 60
          end
        end,
        hide_source?: false
      )
      |> AshPhoenix.Form.validate(%{"duration_in_minutes" => 10})

    assert %{"duration_in_minutes" => 10, "duration_in_seconds" => 600} =
             AshPhoenix.Form.params(form)

    form = AshPhoenix.Form.validate(form, %{"duration_in_minutes" => 11})

    assert %{"duration_in_minutes" => 11, "duration_in_seconds" => 660} =
             AshPhoenix.Form.params(form)
  end
end