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tests consistency

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Alexander Strizhakov 2020-06-23 18:16:47 +03:00
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test/reverse_proxy/reverse_proxy_test.exs
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.ReverseProxyTest do
use Pleroma.Web.ConnCase, async: true
import ExUnit.CaptureLog
import Mox
alias Pleroma.ReverseProxy
alias Pleroma.ReverseProxy.ClientMock
alias Plug.Conn
setup_all do
{:ok, _} = Registry.start_link(keys: :unique, name: ClientMock)
:ok
end
setup :verify_on_exit!
defp user_agent_mock(user_agent, invokes) do
json = Jason.encode!(%{"user-agent": user_agent})
ClientMock
|> expect(:request, fn :get, url, _, _, _ ->
Registry.register(ClientMock, url, 0)
{:ok, 200,
[
{"content-type", "application/json"},
{"content-length", byte_size(json) |> to_string()}
], %{url: url}}
end)
|> expect(:stream_body, invokes, fn %{url: url} = client ->
case Registry.lookup(ClientMock, url) do
[{_, 0}] ->
Registry.update_value(ClientMock, url, &(&1 + 1))
{:ok, json, client}
[{_, 1}] ->
Registry.unregister(ClientMock, url)
:done
end
end)
end
describe "reverse proxy" do
test "do not track successful request", %{conn: conn} do
user_agent_mock("hackney/1.15.1", 2)
url = "/success"
conn = ReverseProxy.call(conn, url)
assert conn.status == 200
assert Cachex.get(:failed_proxy_url_cache, url) == {:ok, nil}
end
end
describe "user-agent" do
test "don't keep", %{conn: conn} do
user_agent_mock("hackney/1.15.1", 2)
conn = ReverseProxy.call(conn, "/user-agent")
assert json_response(conn, 200) == %{"user-agent" => "hackney/1.15.1"}
end
test "keep", %{conn: conn} do
user_agent_mock(Pleroma.Application.user_agent(), 2)
conn = ReverseProxy.call(conn, "/user-agent-keep", keep_user_agent: true)
assert json_response(conn, 200) == %{"user-agent" => Pleroma.Application.user_agent()}
end
end
test "closed connection", %{conn: conn} do
ClientMock
|> expect(:request, fn :get, "/closed", _, _, _ -> {:ok, 200, [], %{}} end)
|> expect(:stream_body, fn _ -> {:error, :closed} end)
|> expect(:close, fn _ -> :ok end)
conn = ReverseProxy.call(conn, "/closed")
assert conn.halted
end
defp stream_mock(invokes, with_close? \\ false) do
ClientMock
|> expect(:request, fn :get, "/stream-bytes/" <> length, _, _, _ ->
Registry.register(ClientMock, "/stream-bytes/" <> length, 0)
{:ok, 200, [{"content-type", "application/octet-stream"}],
%{url: "/stream-bytes/" <> length}}
end)
|> expect(:stream_body, invokes, fn %{url: "/stream-bytes/" <> length} = client ->
max = String.to_integer(length)
case Registry.lookup(ClientMock, "/stream-bytes/" <> length) do
[{_, current}] when current < max ->
Registry.update_value(
ClientMock,
"/stream-bytes/" <> length,
&(&1 + 10)
)
{:ok, "0123456789", client}
[{_, ^max}] ->
Registry.unregister(ClientMock, "/stream-bytes/" <> length)
:done
end
end)
if with_close? do
expect(ClientMock, :close, fn _ -> :ok end)
end
end
describe "max_body" do
test "length returns error if content-length more than option", %{conn: conn} do
user_agent_mock("hackney/1.15.1", 0)
assert capture_log(fn ->
ReverseProxy.call(conn, "/huge-file", max_body_length: 4)
end) =~
"[error] Elixir.Pleroma.ReverseProxy: request to \"/huge-file\" failed: :body_too_large"
assert {:ok, true} == Cachex.get(:failed_proxy_url_cache, "/huge-file")
assert capture_log(fn ->
ReverseProxy.call(conn, "/huge-file", max_body_length: 4)
end) == ""
end
test "max_body_length returns error if streaming body more than that option", %{conn: conn} do
stream_mock(3, true)
assert capture_log(fn ->
ReverseProxy.call(conn, "/stream-bytes/50", max_body_length: 30)
end) =~
"[warn] Elixir.Pleroma.ReverseProxy request to /stream-bytes/50 failed while reading/chunking: :body_too_large"
end
end
describe "HEAD requests" do
test "common", %{conn: conn} do
ClientMock
|> expect(:request, fn :head, "/head", _, _, _ ->
{:ok, 200, [{"content-type", "text/html; charset=utf-8"}]}
end)
conn = ReverseProxy.call(Map.put(conn, :method, "HEAD"), "/head")
assert html_response(conn, 200) == ""
end
end
defp error_mock(status) when is_integer(status) do
ClientMock
|> expect(:request, fn :get, "/status/" <> _, _, _, _ ->
{:error, status}
end)
end
describe "returns error on" do
test "500", %{conn: conn} do
error_mock(500)
url = "/status/500"
capture_log(fn -> ReverseProxy.call(conn, url) end) =~
"[error] Elixir.Pleroma.ReverseProxy: request to /status/500 failed with HTTP status 500"
assert Cachex.get(:failed_proxy_url_cache, url) == {:ok, true}
{:ok, ttl} = Cachex.ttl(:failed_proxy_url_cache, url)
assert ttl <= 60_000
end
test "400", %{conn: conn} do
error_mock(400)
url = "/status/400"
capture_log(fn -> ReverseProxy.call(conn, url) end) =~
"[error] Elixir.Pleroma.ReverseProxy: request to /status/400 failed with HTTP status 400"
assert Cachex.get(:failed_proxy_url_cache, url) == {:ok, true}
assert Cachex.ttl(:failed_proxy_url_cache, url) == {:ok, nil}
end
test "403", %{conn: conn} do
error_mock(403)
url = "/status/403"
capture_log(fn ->
ReverseProxy.call(conn, url, failed_request_ttl: :timer.seconds(120))
end) =~
"[error] Elixir.Pleroma.ReverseProxy: request to /status/403 failed with HTTP status 403"
{:ok, ttl} = Cachex.ttl(:failed_proxy_url_cache, url)
assert ttl > 100_000
end
test "204", %{conn: conn} do
url = "/status/204"
expect(ClientMock, :request, fn :get, _url, _, _, _ -> {:ok, 204, [], %{}} end)
capture_log(fn ->
conn = ReverseProxy.call(conn, url)
assert conn.resp_body == "Request failed: No Content"
assert conn.halted
end) =~
"[error] Elixir.Pleroma.ReverseProxy: request to \"/status/204\" failed with HTTP status 204"
assert Cachex.get(:failed_proxy_url_cache, url) == {:ok, true}
assert Cachex.ttl(:failed_proxy_url_cache, url) == {:ok, nil}
end
end
test "streaming", %{conn: conn} do
stream_mock(21)
conn = ReverseProxy.call(conn, "/stream-bytes/200")
assert conn.state == :chunked
assert byte_size(conn.resp_body) == 200
assert Conn.get_resp_header(conn, "content-type") == ["application/octet-stream"]
end
defp headers_mock(_) do
ClientMock
|> expect(:request, fn :get, "/headers", headers, _, _ ->
Registry.register(ClientMock, "/headers", 0)
{:ok, 200, [{"content-type", "application/json"}], %{url: "/headers", headers: headers}}
end)
|> expect(:stream_body, 2, fn %{url: url, headers: headers} = client ->
case Registry.lookup(ClientMock, url) do
[{_, 0}] ->
Registry.update_value(ClientMock, url, &(&1 + 1))
headers = for {k, v} <- headers, into: %{}, do: {String.capitalize(k), v}
{:ok, Jason.encode!(%{headers: headers}), client}
[{_, 1}] ->
Registry.unregister(ClientMock, url)
:done
end
end)
:ok
end
describe "keep request headers" do
setup [:headers_mock]
test "header passes", %{conn: conn} do
conn =
Conn.put_req_header(
conn,
"accept",
"text/html"
)
|> ReverseProxy.call("/headers")
%{"headers" => headers} = json_response(conn, 200)
assert headers["Accept"] == "text/html"
end
test "header is filtered", %{conn: conn} do
conn =
Conn.put_req_header(
conn,
"accept-language",
"en-US"
)
|> ReverseProxy.call("/headers")
%{"headers" => headers} = json_response(conn, 200)
refute headers["Accept-Language"]
end
end
test "returns 400 on non GET, HEAD requests", %{conn: conn} do
conn = ReverseProxy.call(Map.put(conn, :method, "POST"), "/ip")
assert conn.status == 400
end
describe "cache resp headers" do
test "add cache-control", %{conn: conn} do
ClientMock
|> expect(:request, fn :get, "/cache", _, _, _ ->
{:ok, 200, [{"ETag", "some ETag"}], %{}}
end)
|> expect(:stream_body, fn _ -> :done end)
conn = ReverseProxy.call(conn, "/cache")
assert {"cache-control", "public, max-age=1209600"} in conn.resp_headers
end
end
defp disposition_headers_mock(headers) do
ClientMock
|> expect(:request, fn :get, "/disposition", _, _, _ ->
Registry.register(ClientMock, "/disposition", 0)
{:ok, 200, headers, %{url: "/disposition"}}
end)
|> expect(:stream_body, 2, fn %{url: "/disposition"} = client ->
case Registry.lookup(ClientMock, "/disposition") do
[{_, 0}] ->
Registry.update_value(ClientMock, "/disposition", &(&1 + 1))
{:ok, "", client}
[{_, 1}] ->
Registry.unregister(ClientMock, "/disposition")
:done
end
end)
end
describe "response content disposition header" do
test "not atachment", %{conn: conn} do
disposition_headers_mock([
{"content-type", "image/gif"},
{"content-length", "0"}
])
conn = ReverseProxy.call(conn, "/disposition")
assert {"content-type", "image/gif"} in conn.resp_headers
end
test "with content-disposition header", %{conn: conn} do
disposition_headers_mock([
{"content-disposition", "attachment; filename=\"filename.jpg\""},
{"content-length", "0"}
])
conn = ReverseProxy.call(conn, "/disposition")
assert {"content-disposition", "attachment; filename=\"filename.jpg\""} in conn.resp_headers
end
end
end