test: Include test coverage for actor in context when resolving mutations backed by generic actions (#418)

Author: joshampton

test/plug_test.exs

@@ -49,6 +49,27 @@ defmodule AshGraphql.PlugTest do
     assert resp["data"]["currentUser"]["name"] == user.name
   end
 
+  test "actor is set for preparations on Generic Actions" do
+    query = ~s|
+      mutation {
+        preparation
+      }
+    |
+
+    user =
+      AshGraphql.Test.User
+      |> Ash.Changeset.for_create(:create, %{name: "My Name"})
+      |> Ash.create!()
+
+    resp =
+      query
+      |> conn()
+      |> Ash.PlugHelpers.set_actor(user)
+      |> run()
+
+    assert resp["data"]["preparation"] == user.name
+  end
+
   test "when the actor is not set, the current user return nil" do
     resp =
       """

test/support/resources/user.ex

@@ -36,6 +36,8 @@ defmodule AshGraphql.Test.User do
       destroy :delete_current_user, :destroy_current_user do
         identity false
       end
+
+      action :preparation, :preparation
     end
   end
 
@@ -99,6 +101,22 @@ defmodule AshGraphql.Test.User do
     destroy :destroy_current_user do
       filter(expr(id == ^actor(:id)))
     end
+
+    action :preparation, :string do
+      prepare fn
+        input, %{actor: %{name: name}} ->
+          Ash.ActionInput.set_context(input, %{name: name})
+
+        input, _context ->
+          input
+      end
+
+      run fn _input, %{source_context: source_context} ->
+        name = Map.get(source_context, :name)
+
+        {:ok, name}
+      end
+    end
   end
 
   attributes do
@@ -133,6 +151,10 @@ defmodule AshGraphql.Test.User do
     policy action_type(:destroy) do
       authorize_if(expr(id == ^actor(:id)))
     end
+
+    policy action(:preparation) do
+      authorize_if always()
+    end
   end
 
   field_policies do