Emoji Reactions: Actually use the validation.

test/web/activity_pub/transmogrifier_test.exs

@@ -395,6 +395,25 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
       assert data["content"] == "👌"
     end
 
+    test "it reject invalid emoji reactions" do
+      user = insert(:user)
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "hello"})
+
+      data =
+        File.read!("test/fixtures/emoji-reaction-too-long.json")
+        |> Poison.decode!()
+        |> Map.put("object", activity.data["object"])
+
+      assert :error = Transmogrifier.handle_incoming(data)
+
+      data =
+        File.read!("test/fixtures/emoji-reaction-no-emoji.json")
+        |> Poison.decode!()
+        |> Map.put("object", activity.data["object"])
+
+      assert :error = Transmogrifier.handle_incoming(data)
+    end
+
     test "it works for incoming emoji reaction undos" do
       user = insert(:user)
 

test/web/common_api/common_api_test.exs

@@ -238,7 +238,9 @@ defmodule Pleroma.Web.CommonAPITest do
       assert reaction.data["actor"] == user.ap_id
       assert reaction.data["content"] == "👍"
 
-      # TODO: test error case.
+      {:ok, activity} = CommonAPI.post(other_user, %{"status" => "cofe"})
+
+      {:error, _} = CommonAPI.react_with_emoji(activity.id, user, ".")
     end
 
     test "unreacting to a status with an emoji" do