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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.Plugs.CacheTest do
   6   # Relies on Cachex, has to stay synchronous
   7   use Pleroma.DataCase
   8   use Plug.Test
   9
  10   alias Pleroma.Web.Plugs.Cache
  11
  12   @miss_resp {200,
  13               [
  14                 {"cache-control", "max-age=0, private, must-revalidate"},
  15                 {"content-type", "cofe/hot; charset=utf-8"},
  16                 {"x-cache", "MISS from Pleroma"}
  17               ], "cofe"}
  18
  19   @hit_resp {200,
  20              [
  21                {"cache-control", "max-age=0, private, must-revalidate"},
  22                {"content-type", "cofe/hot; charset=utf-8"},
  23                {"x-cache", "HIT from Pleroma"}
  24              ], "cofe"}
  25
  26   @ttl 5
  27
  28   test "caches a response" do
  29     assert @miss_resp ==
  30              conn(:get, "/")
  31              |> Cache.call(%{query_params: false, ttl: nil})
  32              |> put_resp_content_type("cofe/hot")
  33              |> send_resp(:ok, "cofe")
  34              |> sent_resp()
  35
  36     assert_raise(Plug.Conn.AlreadySentError, fn ->
  37       conn(:get, "/")
  38       |> Cache.call(%{query_params: false, ttl: nil})
  39       |> put_resp_content_type("cofe/hot")
  40       |> send_resp(:ok, "cofe")
  41       |> sent_resp()
  42     end)
  43
  44     assert @hit_resp ==
  45              conn(:get, "/")
  46              |> Cache.call(%{query_params: false, ttl: nil})
  47              |> sent_resp()
  48   end
  49
  50   test "ttl is set" do
  51     assert @miss_resp ==
  52              conn(:get, "/")
  53              |> Cache.call(%{query_params: false, ttl: @ttl})
  54              |> put_resp_content_type("cofe/hot")
  55              |> send_resp(:ok, "cofe")
  56              |> sent_resp()
  57
  58     assert @hit_resp ==
  59              conn(:get, "/")
  60              |> Cache.call(%{query_params: false, ttl: @ttl})
  61              |> sent_resp()
  62
  63     :timer.sleep(@ttl + 1)
  64
  65     assert @miss_resp ==
  66              conn(:get, "/")
  67              |> Cache.call(%{query_params: false, ttl: @ttl})
  68              |> put_resp_content_type("cofe/hot")
  69              |> send_resp(:ok, "cofe")
  70              |> sent_resp()
  71   end
  72
  73   test "set ttl via conn.assigns" do
  74     assert @miss_resp ==
  75              conn(:get, "/")
  76              |> Cache.call(%{query_params: false, ttl: nil})
  77              |> put_resp_content_type("cofe/hot")
  78              |> assign(:cache_ttl, @ttl)
  79              |> send_resp(:ok, "cofe")
  80              |> sent_resp()
  81
  82     assert @hit_resp ==
  83              conn(:get, "/")
  84              |> Cache.call(%{query_params: false, ttl: nil})
  85              |> sent_resp()
  86
  87     :timer.sleep(@ttl + 1)
  88
  89     assert @miss_resp ==
  90              conn(:get, "/")
  91              |> Cache.call(%{query_params: false, ttl: nil})
  92              |> put_resp_content_type("cofe/hot")
  93              |> send_resp(:ok, "cofe")
  94              |> sent_resp()
  95   end
  96
  97   test "ignore query string when `query_params` is false" do
  98     assert @miss_resp ==
  99              conn(:get, "/?cofe")
 100              |> Cache.call(%{query_params: false, ttl: nil})
 101              |> put_resp_content_type("cofe/hot")
 102              |> send_resp(:ok, "cofe")
 103              |> sent_resp()
 104
 105     assert @hit_resp ==
 106              conn(:get, "/?cofefe")
 107              |> Cache.call(%{query_params: false, ttl: nil})
 108              |> sent_resp()
 109   end
 110
 111   test "take query string into account when `query_params` is true" do
 112     assert @miss_resp ==
 113              conn(:get, "/?cofe")
 114              |> Cache.call(%{query_params: true, ttl: nil})
 115              |> put_resp_content_type("cofe/hot")
 116              |> send_resp(:ok, "cofe")
 117              |> sent_resp()
 118
 119     assert @miss_resp ==
 120              conn(:get, "/?cofefe")
 121              |> Cache.call(%{query_params: true, ttl: nil})
 122              |> put_resp_content_type("cofe/hot")
 123              |> send_resp(:ok, "cofe")
 124              |> sent_resp()
 125   end
 126
 127   test "take specific query params into account when `query_params` is list" do
 128     assert @miss_resp ==
 129              conn(:get, "/?a=1&b=2&c=3&foo=bar")
 130              |> fetch_query_params()
 131              |> Cache.call(%{query_params: ["a", "b", "c"], ttl: nil})
 132              |> put_resp_content_type("cofe/hot")
 133              |> send_resp(:ok, "cofe")
 134              |> sent_resp()
 135
 136     assert @hit_resp ==
 137              conn(:get, "/?bar=foo&c=3&b=2&a=1")
 138              |> fetch_query_params()
 139              |> Cache.call(%{query_params: ["a", "b", "c"], ttl: nil})
 140              |> sent_resp()
 141
 142     assert @miss_resp ==
 143              conn(:get, "/?bar=foo&c=3&b=2&a=2")
 144              |> fetch_query_params()
 145              |> Cache.call(%{query_params: ["a", "b", "c"], ttl: nil})
 146              |> put_resp_content_type("cofe/hot")
 147              |> send_resp(:ok, "cofe")
 148              |> sent_resp()
 149   end
 150
 151   test "ignore not GET requests" do
 152     expected =
 153       {200,
 154        [
 155          {"cache-control", "max-age=0, private, must-revalidate"},
 156          {"content-type", "cofe/hot; charset=utf-8"}
 157        ], "cofe"}
 158
 159     assert expected ==
 160              conn(:post, "/")
 161              |> Cache.call(%{query_params: true, ttl: nil})
 162              |> put_resp_content_type("cofe/hot")
 163              |> send_resp(:ok, "cofe")
 164              |> sent_resp()
 165   end
 166
 167   test "ignore non-successful responses" do
 168     expected =
 169       {418,
 170        [
 171          {"cache-control", "max-age=0, private, must-revalidate"},
 172          {"content-type", "tea/iced; charset=utf-8"}
 173        ], "🥤"}
 174
 175     assert expected ==
 176              conn(:get, "/cofe")
 177              |> Cache.call(%{query_params: true, ttl: nil})
 178              |> put_resp_content_type("tea/iced")
 179              |> send_resp(:im_a_teapot, "🥤")
 180              |> sent_resp()
 181   end
 182 end