diff --git a/spec/lib/open_project/appsignal_spec.rb b/spec/lib/open_project/appsignal_spec.rb
new file mode 100644
index 000000000000..3cf4c8d4f1a5
--- /dev/null
+++ b/spec/lib/open_project/appsignal_spec.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+#-- copyright
+# OpenProject is an open source project management software.
+# Copyright (C) 2012-2024 the OpenProject GmbH
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See COPYRIGHT and LICENSE files for more details.
+#++
+
+require "spec_helper"
+require "appsignal"
+
+RSpec.describe OpenProject::Appsignal do
+  describe ".exception_handler" do
+    let(:exception) { StandardError.new("I am a fake exception") }
+
+    before do
+      allow(Appsignal).to receive(:active?).and_return(true)
+      allow(Appsignal).to receive(:send_error)
+    end
+
+    it "does nothing if there is no exception in the log context" do
+      described_class.exception_handler("message")
+      expect(Appsignal).not_to have_received(:send_error)
+    end
+
+    it "stores the exception in current appsignal transaction if one is available" do
+      transaction = Appsignal::Transaction.create(
+        SecureRandom.uuid,
+        Appsignal::Transaction::BACKGROUND_JOB,
+        Appsignal::Transaction::GenericRequest.new({})
+      )
+      allow(transaction).to receive(:set_error)
+      described_class.exception_handler("message", exception:)
+
+      expect(transaction).to have_received(:set_error).with(exception)
+      expect(Appsignal).not_to have_received(:send_error)
+    ensure
+      Appsignal::Transaction.complete_current!
+    end
+
+    it "sends an error through Appsignal if no current appsignal transaction available" do
+      allow(Appsignal).to receive(:send_error)
+      described_class.exception_handler("message", exception:)
+
+      expect(Appsignal).to have_received(:send_error).with(exception)
+    end
+  end
+end