X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/7d52cafd84843cf9fddc30471face0559b288fa7..8ecb2c79f7146ecbb69d08cd38954836dc6d1b4c:/test/models/user_test.rb

diff --git a/test/models/user_test.rb b/test/models/user_test.rb
index 4e2675a2e..42949504f 100644
--- a/test/models/user_test.rb
+++ b/test/models/user_test.rb
@@ -27,10 +27,13 @@ class UserTest < ActiveSupport::TestCase
   end
 
   def test_unique_display_name
-    existing_user = create(:user)
-    new_user = build(:user, :display_name => existing_user.display_name)
-    assert_not new_user.save
-    assert_includes new_user.errors[:display_name], "has already been taken"
+    create(:user, :display_name => "H\u{e9}nryIV")
+
+    %W[H\u{e9}nryIV he\u{301}nryiv H\u{c9}nry\u2163 he\u{301}nry\u2173].each do |name|
+      new_user = build(:user, :display_name => name)
+      assert_not new_user.save
+      assert_includes new_user.errors[:display_name], "has already been taken"
+    end
   end
 
   def test_email_valid
@@ -91,6 +94,36 @@ class UserTest < ActiveSupport::TestCase
     end
   end
 
+  def test_display_name_user_id_new
+    existing_user = create(:user)
+    user = build(:user)
+
+    user.display_name = "user_#{existing_user.id}"
+    assert_not user.valid?, "user_<id> name is valid for existing user id when it shouldn't be"
+
+    user.display_name = "user_#{existing_user.id + 1}"
+    assert_not user.valid?, "user_<id> name is valid for new user id when it shouldn't be"
+  end
+
+  def test_display_name_user_id_rename
+    existing_user = create(:user)
+    user = create(:user)
+
+    user.display_name = "user_#{existing_user.id}"
+    assert_not user.valid?, "user_<id> name is valid for existing user id when it shouldn't be"
+
+    user.display_name = "user_#{user.id}"
+    assert_predicate user, :valid?, "user_<id> name is invalid for own id, when it should be"
+  end
+
+  def test_display_name_user_id_unchanged_is_valid
+    user = build(:user, :display_name => "user_0")
+    user.save(:validate => false)
+    user.reload
+
+    assert_predicate user, :valid?, "user_0 display_name is invalid but it hasn't been changed"
+  end
+
   def test_friends_with
     alice = create(:user, :active)
     bob = create(:user, :active)