Merge branch 'issue_18398' into 'master'

Check for conflict with wiki projects when creating a new project.

## What does this MR do?
Check for conflict with wiki projects when creating a new project
## Are there points in the code the reviewer needs to double check?
No
## Why was this MR needed?
To avoid exposing the information from the wiki repository of other project
## What are the relevant issue numbers?
#18398 
## Screenshots (if relevant)
![Screen_Shot_2016-06-24_at_6.03.49_PM](/uploads/7bf55e5159bf0c2b653b8f4f941f72fc/Screen_Shot_2016-06-24_at_6.03.49_PM.png)
## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [ ] 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)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !4918

1 files changed, 21 insertions, 0 deletions

diff --git a/spec/models/project_spec.rb b/spec/models/project_spec.rb
index 53c8408633c..d305cd9ff1e 100644
--- a/spec/models/project_spec.rb
+++ b/spec/models/project_spec.rb
@@ -63,6 +63,27 @@ describe Project, models: true do
       expect(project2).not_to be_valid
       expect(project2.errors[:limit_reached].first).to match(/Personal project creation is not allowed/)
     end
+
+    describe 'wiki path conflict' do
+      context "when the new path has been used by the wiki of other Project" do
+        it 'should have an error on the name attribute' do
+          new_project = build_stubbed(:project, namespace_id: project.namespace_id, path: "#{project.path}.wiki")
+
+          expect(new_project).not_to be_valid
+          expect(new_project.errors[:name].first).to eq('has already been taken')
+        end
+      end
+
+      context "when the new wiki path has been used by the path of other Project" do
+        it 'should have an error on the name attribute' do
+          project_with_wiki_suffix = create(:project, path: 'foo.wiki')
+          new_project = build_stubbed(:project, namespace_id: project_with_wiki_suffix.namespace_id, path: 'foo')
+
+          expect(new_project).not_to be_valid
+          expect(new_project.errors[:name].first).to eq('has already been taken')
+        end
+      end
+    end
   end
 
   describe 'default_scope' do