Support Undo like activities (Fix #139)

3 files changed, 72 insertions, 1 deletions

diff --git a/test/fixtures/mastodon-undo-like.json b/test/fixtures/mastodon-undo-like.json
new file mode 100644
index 000000000..0cbed30ff
--- /dev/null
+++ b/test/fixtures/mastodon-undo-like.json
@@ -0,0 +1,34 @@
+{
+  "type": "Undo",
+  "signature": {
+    "type": "RsaSignature2017",
+    "signatureValue": "fdxMfQSMwbC6wP6sh6neS/vM5879K67yQkHTbiT5Npr5wAac0y6+o3Ij+41tN3rL6wfuGTosSBTHOtta6R4GCOOhCaCSLMZKypnp1VltCzLDoyrZELnYQIC8gpUXVmIycZbREk22qWUe/w7DAFaKK4UscBlHDzeDVcA0K3Se5Sluqi9/Zh+ldAnEzj/rSEPDjrtvf5wGNf3fHxbKSRKFt90JvKK6hS+vxKUhlRFDf6/SMETw+EhwJSNW4d10yMUakqUWsFv4Acq5LW7l+HpYMvlYY1FZhNde1+uonnCyuQDyvzkff8zwtEJmAXC4RivO/VVLa17SmqheJZfI8oluVg==",
+    "creator": "http://mastodon.example.org/users/admin#main-key",
+    "created": "2018-05-19T16:36:58Z"
+  },
+  "object": {
+    "type": "Like",
+    "object": "http://localtesting.pleroma.lol/objects/eb92579d-3417-42a8-8652-2492c2d4f454",
+    "id": "http://mastodon.example.org/users/admin#likes/2",
+    "actor": "http://mastodon.example.org/users/admin"
+  },
+  "nickname": "lain",
+  "id": "http://mastodon.example.org/users/admin#likes/2/undo",
+  "actor": "http://mastodon.example.org/users/admin",
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "toot": "http://joinmastodon.org/ns#",
+      "sensitive": "as:sensitive",
+      "ostatus": "http://ostatus.org#",
+      "movedTo": "as:movedTo",
+      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+      "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+      "conversation": "ostatus:conversation",
+      "atomUri": "ostatus:atomUri",
+      "Hashtag": "as:Hashtag",
+      "Emoji": "toot:Emoji"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/test/web/activity_pub/activity_pub_test.exs b/test/web/activity_pub/activity_pub_test.exs
index c1ba626b7..9adce84b5 100644
--- a/test/web/activity_pub/activity_pub_test.exs
+++ b/test/web/activity_pub/activity_pub_test.exs
@@ -277,7 +277,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do
       {:ok, like_activity, object} = ActivityPub.like(user, object)
       assert object.data["like_count"] == 1
 
-      {:ok, object} = ActivityPub.unlike(user, object)
+      {:ok, _, _, object} = ActivityPub.unlike(user, object)
       assert object.data["like_count"] == 0
 
       assert Repo.get(Activity, like_activity.id) == nil
diff --git a/test/web/activity_pub/transmogrifier_test.exs b/test/web/activity_pub/transmogrifier_test.exs
index d8579ecfe..a0af75a69 100644
--- a/test/web/activity_pub/transmogrifier_test.exs
+++ b/test/web/activity_pub/transmogrifier_test.exs
@@ -153,6 +153,43 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
       assert data["object"] == activity.data["object"]["id"]
     end
 
+    test "it returns an error for incoming unlikes wihout a like activity" do
+      user = insert(:user)
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "leave a like pls"})
+
+      data =
+        File.read!("test/fixtures/mastodon-undo-like.json")
+        |> Poison.decode!()
+        |> Map.put("object", activity.data["object"]["id"])
+
+      assert Transmogrifier.handle_incoming(data) == :error
+    end
+
+    test "it works for incoming unlikes with an existing like activity" do
+      user = insert(:user)
+      {:ok, activity} = CommonAPI.post(user, %{"status" => "leave a like pls"})
+
+      like_data =
+        File.read!("test/fixtures/mastodon-like.json")
+        |> Poison.decode!()
+        |> Map.put("object", activity.data["object"]["id"])
+
+      {:ok, %Activity{data: like_data, local: false}} = Transmogrifier.handle_incoming(like_data)
+
+      data =
+        File.read!("test/fixtures/mastodon-undo-like.json")
+        |> Poison.decode!()
+        |> Map.put("object", like_data)
+        |> Map.put("actor", like_data["actor"])
+
+      {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+      assert data["actor"] == "http://mastodon.example.org/users/admin"
+      assert data["type"] == "Undo"
+      assert data["id"] == "http://mastodon.example.org/users/admin#likes/2/undo"
+      assert data["object"]["id"] == "http://mastodon.example.org/users/admin#likes/2"
+    end
+
     test "it works for incoming announces" do
       data = File.read!("test/fixtures/mastodon-announce.json") |> Poison.decode!()