Error when adding user to group where he is already assigned (#18665).

git-svn-id: http://svn.redmine.org/redmine/trunk@13785 e93f8b46-1217-0410-a6f0-8f06a7374b81

1 files changed, 13 insertions, 0 deletions

diff --git a/test/integration/api_test/groups_test.rb b/test/integration/api_test/groups_test.rb
index 2fe8271b1..087041219 100644
--- a/test/integration/api_test/groups_test.rb
+++ b/test/integration/api_test/groups_test.rb
@@ -185,6 +185,19 @@ class Redmine::ApiTest::GroupsTest < Redmine::ApiTest::Base
     assert_include User.find(5), Group.find(10).users
   end
 
+  test "POST /groups/:id/users.xml should not add the user if already added" do
+    Group.find(10).users << User.find(5)
+
+    assert_no_difference 'Group.find(10).users.count' do
+      post '/groups/10/users.xml', {:user_id => 5}, credentials('admin')
+      assert_response :unprocessable_entity
+    end
+
+    assert_select 'errors' do
+      assert_select 'error', :text => /User is invalid/
+    end
+  end
+
   test "DELETE /groups/:id/users/:user_id.xml should remove user from the group" do
     assert_difference 'Group.find(10).users.count', -1 do
       delete '/groups/10/users/8.xml', {}, credentials('admin')