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diff --git a/test/plugs/rate_limiter_test.exs b/test/plugs/rate_limiter_test.exs
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+++ b/test/plugs/rate_limiter_test.exs
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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.Plugs.RateLimiterTest do
+  use ExUnit.Case, async: true
+  use Plug.Test
+
+  alias Pleroma.Plugs.RateLimiter
+
+  import Pleroma.Factory
+
+  @limiter_name :testing
+
+  test "init/1" do
+    Pleroma.Config.put([:rate_limit, @limiter_name], {1, 1})
+
+    assert {@limiter_name, {1, 1}} == RateLimiter.init(@limiter_name)
+    assert nil == RateLimiter.init(:foo)
+  end
+
+  test "ip/1" do
+    assert "127.0.0.1" == RateLimiter.ip(%{remote_ip: {127, 0, 0, 1}})
+  end
+
+  test "it restricts by opts" do
+    scale = 1000
+    limit = 5
+
+    Pleroma.Config.put([:rate_limit, @limiter_name], {scale, limit})
+
+    opts = RateLimiter.init(@limiter_name)
+    conn = conn(:get, "/")
+    bucket_name = "#{@limiter_name}:#{RateLimiter.ip(conn)}"
+
+    conn = RateLimiter.call(conn, opts)
+    assert {1, 4, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {2, 3, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {3, 2, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {4, 1, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {5, 0, to_reset, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+
+    assert %{"error" => "Throttled"} = Phoenix.ConnTest.json_response(conn, :too_many_requests)
+    assert conn.halted
+
+    Process.sleep(to_reset)
+
+    conn = conn(:get, "/")
+
+    conn = RateLimiter.call(conn, opts)
+    assert {1, 4, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    refute conn.status == Plug.Conn.Status.code(:too_many_requests)
+    refute conn.resp_body
+    refute conn.halted
+  end
+
+  test "optional limits for authenticated users" do
+    Ecto.Adapters.SQL.Sandbox.checkout(Pleroma.Repo)
+
+    scale = 1000
+    limit = 5
+    Pleroma.Config.put([:rate_limit, @limiter_name], [{1, 10}, {scale, limit}])
+
+    opts = RateLimiter.init(@limiter_name)
+
+    user = insert(:user)
+    conn = conn(:get, "/") |> assign(:user, user)
+    bucket_name = "#{@limiter_name}:#{user.id}"
+
+    conn = RateLimiter.call(conn, opts)
+    assert {1, 4, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {2, 3, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {3, 2, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {4, 1, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {5, 0, to_reset, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    conn = RateLimiter.call(conn, opts)
+
+    assert %{"error" => "Throttled"} = Phoenix.ConnTest.json_response(conn, :too_many_requests)
+    assert conn.halted
+
+    Process.sleep(to_reset)
+
+    conn = conn(:get, "/") |> assign(:user, user)
+
+    conn = RateLimiter.call(conn, opts)
+    assert {1, 4, _, _, _} = ExRated.inspect_bucket(bucket_name, scale, limit)
+
+    refute conn.status == Plug.Conn.Status.code(:too_many_requests)
+    refute conn.resp_body
+    refute conn.halted
+  end
+end