Fix: dismiss mention notifications in cards and comments when reading a card

test/models/card/readable_test.rb

@@ -0,0 +1,23 @@
+require "test_helper"
+
+class Card::ReadableTest < ActiveSupport::TestCase
+  test "read clears events notifications" do
+    assert_changes -> { notifications(:logo_published_kevin).reload.read? }, from: false, to: true do
+      assert_changes -> { notifications(:logo_assignment_kevin).reload.read? }, from: false, to: true do
+        cards(:logo).read_by(users(:kevin))
+      end
+    end
+  end
+
+  test "read clear mentions in the description" do
+    assert_changes -> { notifications(:logo_card_david_mention_by_jz).reload.read? }, from: false, to: true do
+      cards(:logo).read_by(users(:david))
+    end
+  end
+
+  test "read clear mentions in comments" do
+    assert_changes -> { notifications(:logo_comment_david_mention_by_jz).reload.read? }, from: false, to: true do
+      cards(:logo).read_by(users(:david))
+    end
+  end
+end

test/models/user/mentionable_test.rb

@@ -6,6 +6,8 @@ class User::MentionableTest < ActiveSupport::TestCase
   end
 
   test "mentioned by" do
+    users(:david).mentions.destroy_all
+
     assert_difference -> { users(:david).mentions.count }, +1 do
       users(:david).mentioned_by users(:jz), at: cards(:logo)
     end