Validate wiki page creation

**What does this do?**
It adds validation to the creation of a wiki page, that way the user gets real
feedback instead of just a 404 page if the name of the wiki page was invalid

**Why is this needed?**
There are a lot of characters that are not allowed in the creation of a wiki
page, there is even a small text that is saying: Please don't use spaces.
Although we have that text there, we don't actually validate on this. This
commit adds validation on the title and gives the user actual feedback.

**What issues does this fix?**
Fixes http://github.com/gitlabhq/gitlabhq/issues/5357
Fixes https://github.com/gitlabhq/gitlabhq/issues/8565
Fixes https://github.com/gitlabhq/gitlabhq/issues/3913
Fixes https://github.com/gitlabhq/gitlabhq/issues/8166

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/features/steps/project/wiki.rb b/features/steps/project/wiki.rb
index 717132da45d..58cb0ceb3f1 100644
--- a/features/steps/project/wiki.rb
+++ b/features/steps/project/wiki.rb
@@ -133,6 +133,16 @@ class Spinach::Features::ProjectWiki < Spinach::FeatureSteps
     current_path.should include 'one/two/three'
   end
 
+  step 'I create a New page with an invalid name' do
+    click_on 'New Page'
+    fill_in 'Page slug', with: 'invalid name'
+    click_on 'Build'
+  end
+
+  step 'I should see an error message' do
+    expect(page).to have_content "The page slug is invalid"
+  end
+
   step 'I should see non-escaped link in the pages list' do
     page.should have_xpath("//a[@href='/#{project.path_with_namespace}/wikis/one/two/three']")
   end