Merge branch 'fix/import-pending-user' into 'master'

Support pending invitation project members importing projects

Adds support for pending invitation project members on Import/Export - previously the import would fail.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/19973

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5683

3 files changed, 29 insertions, 5 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 184704d8594..f5416434ab1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -76,6 +76,7 @@ v 8.11.0 (unreleased)
   - Add description to new_issue email and new_merge_request_email in text/plain content type. !5663 (dixpac)
   - Speed up and reduce memory usage of Commit#repo_changes, Repository#expire_avatar_cache and IrkerWorker
   - Add unfold links for Side-by-Side view. !5415 (Tim Masliuchenko)
+  - Adds support for pending invitation project members importing projects
 
 v 8.10.5 (unreleased)
 
diff --git a/lib/gitlab/import_export/members_mapper.rb b/lib/gitlab/import_export/members_mapper.rb
index b459054c198..36c4cf6efa0 100644
--- a/lib/gitlab/import_export/members_mapper.rb
+++ b/lib/gitlab/import_export/members_mapper.rb
@@ -18,11 +18,14 @@ module Gitlab
         @map ||=
           begin
             @exported_members.inject(missing_keys_tracking_hash) do |hash, member|
-              existing_user = User.where(find_project_user_query(member)).first
-              old_user_id = member['user']['id']
-              if existing_user && add_user_as_team_member(existing_user, member)
-                hash[old_user_id] = existing_user.id
+              if member['user']
+                old_user_id = member['user']['id']
+                existing_user = User.where(find_project_user_query(member)).first
+                hash[old_user_id] = existing_user.id if existing_user && add_team_member(member, existing_user)
+              else
+                add_team_member(member)
               end
+
               hash
             end
           end
@@ -45,7 +48,7 @@ module Gitlab
         ProjectMember.create!(user: @user, access_level: ProjectMember::MASTER, source_id: @project.id, importing: true)
       end
 
-      def add_user_as_team_member(existing_user, member)
+      def add_team_member(member, existing_user = nil)
         member['user'] = existing_user
 
         ProjectMember.create(member_hash(member)).persisted?
diff --git a/spec/lib/gitlab/import_export/members_mapper_spec.rb b/spec/lib/gitlab/import_export/members_mapper_spec.rb
index 6d5aa0d04a2..770e8b0c2f4 100644
--- a/spec/lib/gitlab/import_export/members_mapper_spec.rb
+++ b/spec/lib/gitlab/import_export/members_mapper_spec.rb
@@ -26,6 +26,20 @@ describe Gitlab::ImportExport::MembersMapper, services: true do
              "email" => user2.email,
              "username" => user2.username
            }
+       },
+       {
+         "id" => 3,
+         "access_level" => 40,
+         "source_id" => 14,
+         "source_type" => "Project",
+         "user_id" => nil,
+         "notification_level" => 3,
+         "created_at" => "2016-03-11T10:21:44.822Z",
+         "updated_at" => "2016-03-11T10:21:44.822Z",
+         "created_by_id" => 1,
+         "invite_email" => 'invite@test.com',
+         "invite_token" => 'token',
+         "invite_accepted_at" => nil
        }]
     end
 
@@ -47,5 +61,11 @@ describe Gitlab::ImportExport::MembersMapper, services: true do
 
       expect(members_mapper.missing_author_ids.first).to eq(-1)
     end
+
+    it 'has invited members with no user' do
+      members_mapper.map
+
+      expect(ProjectMember.find_by_invite_email('invite@test.com')).not_to be_nil
+    end
   end
 end