Add WebFinger test for AP-only account

test/fixtures/tesla_mock/kpherox@mstdn.jp.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
+  <Subject>acct:kPherox@mstdn.jp</Subject>
+  <Alias>https://mstdn.jp/@kPherox</Alias>
+  <Alias>https://mstdn.jp/users/kPherox</Alias>
+  <Link rel="http://webfinger.net/rel/profile-page" type="text/html" href="https://mstdn.jp/@kPherox"/>
+  <Link rel="http://schemas.google.com/g/2010#updates-from" type="application/atom+xml" href="https://mstdn.jp/users/kPherox.atom"/>
+  <Link rel="self" type="application/activity+json" href="https://mstdn.jp/users/kPherox"/>
+  <Link rel="http://ostatus.org/schema/1.0/subscribe" template="https://mstdn.jp/authorize_interaction?acct={uri}"/>
+</XRD>

test/support/http_request_mock.ex

@@ -915,6 +915,14 @@ defmodule HttpRequestMock do
     {:ok, %Tesla.Env{status: 404, body: ""}}
   end
 
+  def get("https://mstdn.jp/.well-known/webfinger?resource=acct:kpherox@mstdn.jp", _, _, _) do
+    {:ok,
+     %Tesla.Env{
+       status: 200,
+       body: File.read!("test/fixtures/tesla_mock/kpherox@mstdn.jp.xml")
+     }}
+  end
+
   def get(url, query, body, headers) do
     {:error,
      "Not implemented the mock response for get #{inspect(url)}, #{query}, #{inspect(body)}, #{

test/web/web_finger/web_finger_test.exs

@@ -81,6 +81,20 @@ defmodule Pleroma.Web.WebFingerTest do
       assert data["subscribe_address"] == "https://gnusocial.de/main/ostatussub?profile={uri}"
     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"] == "https://mstdn.jp/users/kPherox.atom"
+      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"