diff --git a/test/job_queue_monitor_test.exs b/test/job_queue_monitor_test.exs
new file mode 100644
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+++ b/test/job_queue_monitor_test.exs
@@ -0,0 +1,70 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.JobQueueMonitorTest do
+  use ExUnit.Case, async: true
+
+  alias Pleroma.JobQueueMonitor
+
+  @success {:process_event, :success, 1337,
+            %{
+              args: %{"op" => "refresh_subscriptions"},
+              attempt: 1,
+              id: 339,
+              max_attempts: 5,
+              queue: "federator_outgoing",
+              worker: "Pleroma.Workers.SubscriberWorker"
+            }}
+
+  @failure {:process_event, :failure, 22_521_134,
+            %{
+              args: %{"op" => "force_password_reset", "user_id" => "9nJG6n6Nbu7tj9GJX6"},
+              attempt: 1,
+              error: %RuntimeError{message: "oops"},
+              id: 345,
+              kind: :exception,
+              max_attempts: 1,
+              queue: "background",
+              stack: [
+                {Pleroma.Workers.BackgroundWorker, :perform, 2,
+                 [file: 'lib/pleroma/workers/background_worker.ex', line: 31]},
+                {Oban.Queue.Executor, :safe_call, 1,
+                 [file: 'lib/oban/queue/executor.ex', line: 42]},
+                {:timer, :tc, 3, [file: 'timer.erl', line: 197]},
+                {Oban.Queue.Executor, :call, 2, [file: 'lib/oban/queue/executor.ex', line: 23]},
+                {Task.Supervised, :invoke_mfa, 2, [file: 'lib/task/supervised.ex', line: 90]},
+                {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 249]}
+              ],
+              worker: "Pleroma.Workers.BackgroundWorker"
+            }}
+
+  test "stats/0" do
+    assert %{processed_jobs: _, queues: _, workers: _} = JobQueueMonitor.stats()
+  end
+
+  test "handle_cast/2" do
+    state = %{workers: %{}, queues: %{}, processed_jobs: 0}
+
+    assert {:noreply, state} = JobQueueMonitor.handle_cast(@success, state)
+    assert {:noreply, state} = JobQueueMonitor.handle_cast(@failure, state)
+    assert {:noreply, state} = JobQueueMonitor.handle_cast(@success, state)
+    assert {:noreply, state} = JobQueueMonitor.handle_cast(@failure, state)
+
+    assert state == %{
+             processed_jobs: 4,
+             queues: %{
+               "background" => %{failure: 2, processed_jobs: 2, success: 0},
+               "federator_outgoing" => %{failure: 0, processed_jobs: 2, success: 2}
+             },
+             workers: %{
+               "Pleroma.Workers.BackgroundWorker" => %{
+                 "force_password_reset" => %{failure: 2, processed_jobs: 2, success: 0}
+               },
+               "Pleroma.Workers.SubscriberWorker" => %{
+                 "refresh_subscriptions" => %{failure: 0, processed_jobs: 2, success: 2}
+               }
+             }
+           }
+  end
+end