Fixed that the proposed users list may be empty when adding a project member (#10374).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9128 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/principal_test.rb

@@ -18,6 +18,7 @@
 require File.expand_path('../../test_helper', __FILE__)
 
 class PrincipalTest < ActiveSupport::TestCase
+  fixtures :users, :projects, :members, :member_roles
 
   def test_active_scope_should_return_groups_and_active_users
     result = Principal.active.all
@@ -32,6 +33,12 @@ class PrincipalTest < ActiveSupport::TestCase
     assert_equal projects.map(&:principals).flatten.sort, Principal.member_of(projects).sort
   end
 
+  def test_not_member_of_scope_should_return_users_that_have_no_memberships
+    projects = Project.find_all_by_id(1, 2)
+    expected = (Principal.all - projects.map(&:memberships).flatten.map(&:principal)).sort
+    assert_equal expected, Principal.not_member_of(projects).sort
+  end
+
   context "#like" do
     setup do
       Principal.generate!(:login => 'login')