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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.Web.WebFingerTest do
+  use Pleroma.DataCase
+  alias Pleroma.Web.WebFinger
+  import Pleroma.Factory
+  import Tesla.Mock
+
+  setup do
+    mock(fn env -> apply(HttpRequestMock, :request, [env]) end)
+    :ok
+  end
+
+  describe "host meta" do
+    test "returns a link to the xml lrdd" do
+      host_info = WebFinger.host_meta()
+
+      assert String.contains?(host_info, Pleroma.Web.base_url())
+    end
+  end
+
+  describe "incoming webfinger request" do
+    test "works for fqns" do
+      user = insert(:user)
+
+      {:ok, result} =
+        WebFinger.webfinger("#{user.nickname}@#{Pleroma.Web.Endpoint.host()}", "XML")
+
+      assert is_binary(result)
+    end
+
+    test "works for ap_ids" do
+      user = insert(:user)
+
+      {:ok, result} = WebFinger.webfinger(user.ap_id, "XML")
+      assert is_binary(result)
+    end
+  end
+
+  describe "fingering" do
+    test "returns error for nonsensical input" do
+      assert {:error, _} = WebFinger.finger("bliblablu")
+      assert {:error, _} = WebFinger.finger("pleroma.social")
+    end
+
+    test "returns error when fails parse xml or json" do
+      user = "invalid_content@social.heldscal.la"
+      assert {:error, %Jason.DecodeError{}} = WebFinger.finger(user)
+    end
+
+    test "returns the ActivityPub actor URI for an ActivityPub user" do
+      user = "framasoft@framatube.org"
+
+      {:ok, _data} = WebFinger.finger(user)
+    end
+
+    test "returns the ActivityPub actor URI for an ActivityPub user with the ld+json mimetype" do
+      user = "kaniini@gerzilla.de"
+
+      {:ok, data} = WebFinger.finger(user)
+
+      assert data["ap_id"] == "https://gerzilla.de/channel/kaniini"
+    end
+
+    test "it work for AP-only user" do
+      user = "kpherox@mstdn.jp"
+
+      {:ok, data} = WebFinger.finger(user)
+
+      assert data["magic_key"] == nil
+      assert data["salmon"] == nil
+
+      assert data["topic"] == nil
+      assert data["subject"] == "acct:kPherox@mstdn.jp"
+      assert data["ap_id"] == "https://mstdn.jp/users/kPherox"
+      assert data["subscribe_address"] == "https://mstdn.jp/authorize_interaction?acct={uri}"
+    end
+
+    test "it works for friendica" do
+      user = "lain@squeet.me"
+
+      {:ok, _data} = WebFinger.finger(user)
+    end
+
+    test "it gets the xrd endpoint" do
+      {:ok, template} = WebFinger.find_lrdd_template("social.heldscal.la")
+
+      assert template == "https://social.heldscal.la/.well-known/webfinger?resource={uri}"
+    end
+
+    test "it gets the xrd endpoint for hubzilla" do
+      {:ok, template} = WebFinger.find_lrdd_template("macgirvin.com")
+
+      assert template == "https://macgirvin.com/xrd/?uri={uri}"
+    end
+
+    test "it gets the xrd endpoint for statusnet" do
+      {:ok, template} = WebFinger.find_lrdd_template("status.alpicola.com")
+
+      assert template == "http://status.alpicola.com/main/xrd?uri={uri}"
+    end
+
+    test "it works with idna domains as nickname" do
+      nickname = "lain@" <> to_string(:idna.encode("zetsubou.みんな"))
+
+      {:ok, _data} = WebFinger.finger(nickname)
+    end
+
+    test "it works with idna domains as link" do
+      ap_id = "https://" <> to_string(:idna.encode("zetsubou.みんな")) <> "/users/lain"
+      {:ok, _data} = WebFinger.finger(ap_id)
+    end
+  end
+end