adding gun adapter

test/reverse_proxy/client/tesla_test.exs

@@ -0,0 +1,93 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.ReverseProxy.Client.TeslaTest do
+  use ExUnit.Case
+  use Pleroma.Tests.Helpers
+  alias Pleroma.ReverseProxy.Client
+  @moduletag :integration
+
+  clear_config_all([Pleroma.Gun.API]) do
+    Pleroma.Config.put([Pleroma.Gun.API], Pleroma.Gun)
+  end
+
+  setup do
+    Application.put_env(:tesla, :adapter, Tesla.Adapter.Gun)
+
+    on_exit(fn ->
+      Application.put_env(:tesla, :adapter, Tesla.Mock)
+    end)
+  end
+
+  test "get response body stream" do
+    {:ok, status, headers, ref} =
+      Client.Tesla.request(
+        :get,
+        "http://httpbin.org/stream-bytes/10",
+        [{"accept", "application/octet-stream"}],
+        "",
+        []
+      )
+
+    assert status == 200
+    assert headers != []
+
+    {:ok, response, ref} = Client.Tesla.stream_body(ref)
+    check_ref(ref)
+    assert is_binary(response)
+    assert byte_size(response) == 10
+
+    assert :done == Client.Tesla.stream_body(ref)
+    assert :ok = Client.Tesla.close(ref)
+  end
+
+  test "head response" do
+    {:ok, status, headers} = Client.Tesla.request(:head, "https://httpbin.org/get", [], "")
+
+    assert status == 200
+    assert headers != []
+  end
+
+  test "get error response" do
+    {:ok, status, headers, _body} =
+      Client.Tesla.request(
+        :get,
+        "https://httpbin.org/status/500",
+        [],
+        ""
+      )
+
+    assert status == 500
+    assert headers != []
+  end
+
+  describe "client error" do
+    setup do
+      adapter = Application.get_env(:tesla, :adapter)
+      Application.put_env(:tesla, :adapter, Tesla.Adapter.Hackney)
+
+      on_exit(fn -> Application.put_env(:tesla, :adapter, adapter) end)
+      :ok
+    end
+
+    test "adapter doesn't support reading body in chunks" do
+      assert_raise RuntimeError,
+                   "Elixir.Tesla.Adapter.Hackney doesn't support reading body in chunks",
+                   fn ->
+                     Client.Tesla.request(
+                       :get,
+                       "http://httpbin.org/stream-bytes/10",
+                       [{"accept", "application/octet-stream"}],
+                       ""
+                     )
+                   end
+    end
+  end
+
+  defp check_ref(%{pid: pid, stream: stream} = ref) do
+    assert is_pid(pid)
+    assert is_reference(stream)
+    assert ref[:fin]
+  end
+end