Merge branch 'fix/user-search-null-name' into 'develop'

fix user search results for users with unset display name

Closes #499

See merge request pleroma/pleroma!625

lib/pleroma/user.ex

@@ -610,7 +610,7 @@ defmodule Pleroma.User do
         select_merge: %{
           search_distance:
             fragment(
-              "? <-> (? || ?)",
+              "? <-> (? || coalesce(?, ''))",
               ^query,
               u.nickname,
               u.name

test/user_test.exs

@@ -756,5 +756,15 @@ defmodule Pleroma.UserTest do
       assert user_four ==
                User.search("lain@ple") |> List.first() |> Map.put(:search_distance, nil)
     end
+
+    test "finds a user whose name is nil" do
+      _user = insert(:user, %{name: "notamatch", nickname: "testuser@pleroma.amplifie.red"})
+      user_two = insert(:user, %{name: nil, nickname: "lain@pleroma.soykaf.com"})
+
+      assert user_two ==
+               User.search("lain@pleroma.soykaf.com")
+               |> List.first()
+               |> Map.put(:search_distance, nil)
+    end
   end
 end