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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Conversation.ParticipationTest do
+  use Pleroma.DataCase
+  import Pleroma.Factory
+  alias Pleroma.Conversation.Participation
+  alias Pleroma.Web.CommonAPI
+
+  test "it creates a participation for a conversation and a user" do
+    user = insert(:user)
+    conversation = insert(:conversation)
+
+    {:ok, %Participation{} = participation} =
+      Participation.create_for_user_and_conversation(user, conversation)
+
+    assert participation.user_id == user.id
+    assert participation.conversation_id == conversation.id
+
+    :timer.sleep(1000)
+    # Creating again returns the same participation
+    {:ok, %Participation{} = participation_two} =
+      Participation.create_for_user_and_conversation(user, conversation)
+
+    assert participation.id == participation_two.id
+    refute participation.updated_at == participation_two.updated_at
+  end
+
+  test "recreating an existing participations sets it to unread" do
+    participation = insert(:participation, %{read: true})
+
+    {:ok, participation} =
+      Participation.create_for_user_and_conversation(
+        participation.user,
+        participation.conversation
+      )
+
+    refute participation.read
+  end
+
+  test "it marks a participation as read" do
+    participation = insert(:participation, %{read: false})
+    {:ok, participation} = Participation.mark_as_read(participation)
+
+    assert participation.read
+  end
+
+  test "it marks a participation as unread" do
+    participation = insert(:participation, %{read: true})
+    {:ok, participation} = Participation.mark_as_unread(participation)
+
+    refute participation.read
+  end
+
+  test "gets all the participations for a user, ordered by updated at descending" do
+    user = insert(:user)
+    {:ok, activity_one} = CommonAPI.post(user, %{"status" => "x", "visibility" => "direct"})
+    :timer.sleep(1000)
+    {:ok, activity_two} = CommonAPI.post(user, %{"status" => "x", "visibility" => "direct"})
+    :timer.sleep(1000)
+
+    {:ok, activity_three} =
+      CommonAPI.post(user, %{
+        "status" => "x",
+        "visibility" => "direct",
+        "in_reply_to_status_id" => activity_one.id
+      })
+
+    assert [participation_one, participation_two] = Participation.for_user(user)
+
+    object2 = Pleroma.Object.normalize(activity_two)
+    object3 = Pleroma.Object.normalize(activity_three)
+
+    assert participation_one.conversation.ap_id == object3.data["context"]
+    assert participation_two.conversation.ap_id == object2.data["context"]
+
+    # Pagination
+    assert [participation_one] = Participation.for_user(user, %{"limit" => 1})
+
+    assert participation_one.conversation.ap_id == object3.data["context"]
+
+    # With last_activity_id
+    assert [participation_one] =
+             Participation.for_user_with_last_activity_id(user, %{"limit" => 1})
+
+    assert participation_one.last_activity_id == activity_three.id
+  end
+end