From 5b8f9ff8c14b5992e3db7a0c890ca5539e6a0086 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Tue, 15 Jan 2019 13:05:25 +0300
Subject: [PATCH] [#477] User search tests. Normalized search rank in
 User.search.

---
 lib/pleroma/user.ex |  3 ++-
 test/user_test.exs  | 62 ++++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 58 insertions(+), 7 deletions(-)

diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index 52638b446..2488697bb 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -704,7 +704,8 @@ def search(query, resolve \\ false, for_user \\ nil) do
               ts_rank_cd(
                 setweight(to_tsvector('simple', regexp_replace(nickname, '\\W', ' ', 'g')), 'A') ||
                 setweight(to_tsvector('simple', regexp_replace(coalesce(name, ''), '\\W', ' ', 'g')), 'B'),
-                to_tsquery('simple', ?)
+                to_tsquery('simple', ?),
+                32
               )
               """,
               ^processed_query
diff --git a/test/user_test.exs b/test/user_test.exs
index efa7937bc..48b7b72ec 100644
--- a/test/user_test.exs
+++ b/test/user_test.exs
@@ -775,13 +775,55 @@ test "User.delete() plugs any possible zombie objects" do
   end
 
   describe "User.search" do
-    test "finds a user, ranking by similarity" do
-      _user = insert(:user, %{name: "lain"})
-      _user_two = insert(:user, %{name: "ean"})
-      _user_three = insert(:user, %{name: "ebn", nickname: "lain@mastodon.social"})
-      user_four = insert(:user, %{nickname: "lain@pleroma.soykaf.com"})
+    test "finds a user by full or partial nickname" do
+      user = insert(:user, %{nickname: "john"})
 
-      assert user_four == User.search("lain@ple") |> List.first() |> Map.put(:search_rank, nil)
+      Enum.each(["john", "jo", "j"], fn query ->
+        assert user == User.search(query) |> List.first() |> Map.put(:search_rank, nil)
+      end)
+    end
+
+    test "finds a user by full or partial name" do
+      user = insert(:user, %{name: "John Doe"})
+
+      Enum.each(["John Doe", "JOHN", "doe", "j d", "j", "d"], fn query ->
+        assert user == User.search(query) |> List.first() |> Map.put(:search_rank, nil)
+      end)
+    end
+
+    test "finds users, preferring nickname matches over name matches" do
+      u1 = insert(:user, %{name: "lain", nickname: "nick1"})
+      u2 = insert(:user, %{nickname: "lain", name: "nick1"})
+
+      assert [u2.id, u1.id] == Enum.map(User.search("lain"), & &1.id)
+    end
+
+    test "finds users, considering density of matched tokens" do
+      u1 = insert(:user, %{name: "Bar Bar plus Word Word"})
+      u2 = insert(:user, %{name: "Word Word Bar Bar Bar"})
+
+      assert [u2.id, u1.id] == Enum.map(User.search("bar word"), & &1.id)
+    end
+
+    test "finds users, ranking by similarity" do
+      u1 = insert(:user, %{name: "lain"})
+      _u2 = insert(:user, %{name: "ean"})
+      u3 = insert(:user, %{name: "ebn", nickname: "lain@mastodon.social"})
+      u4 = insert(:user, %{nickname: "lain@pleroma.soykaf.com"})
+
+      assert [u4.id, u3.id, u1.id] == Enum.map(User.search("lain@ple"), & &1.id)
+    end
+
+    test "finds users, boosting ranks of friends and followers" do
+      u1 = insert(:user)
+      u2 = insert(:user, %{name: "Doe"})
+      follower = insert(:user, %{name: "Doe"})
+      friend = insert(:user, %{name: "Doe"})
+
+      {:ok, follower} = User.follow(follower, u1)
+      {:ok, u1} = User.follow(u1, friend)
+
+      assert [friend.id, follower.id, u2.id] == Enum.map(User.search("doe", false, u1), & &1.id)
     end
 
     test "finds a user whose name is nil" do
@@ -793,6 +835,14 @@ test "finds a user whose name is nil" do
                |> List.first()
                |> Map.put(:search_rank, nil)
     end
+
+    test "does not yield false-positive matches" do
+      insert(:user, %{name: "John Doe"})
+
+      Enum.each(["mary", "a", ""], fn query ->
+        assert [] == User.search(query)
+      end)
+    end
   end
 
   test "auth_active?/1 works correctly" do