Prevent empty public projects from throwing exceptions

GITLAB-1279 (GITLAB-1264)

Change-Id: Ifb5b4313bc91fae720f8ef5c36152c45e9d38934

app/controllers/public/projects_controller.rb

 class Public::ProjectsController < ApplicationController
   skip_before_filter :authenticate_user!,
-    :reject_blocked, :set_current_user_for_observers,
-    :add_abilities
+                     :reject_blocked, :set_current_user_for_observers,
+                     :add_abilities
 
   layout 'public'
 
@@ -16,9 +16,11 @@ class Public::ProjectsController < ApplicationController
     render_404 and return unless @project
 
     @repository = @project.repository
-    @recent_tags = @repository.tags.first(10)
+    unless @project.empty_repo?
+      @recent_tags = @repository.tags.first(10)
 
-    @commit = @repository.commit(params[:ref])
-    @tree = Tree.new(@repository, @commit.id)
+      @commit = @repository.commit(params[:ref])
+      @tree = Tree.new(@repository, @commit.id)
+    end
   end
 end

app/views/public/projects/show.html.haml

@@ -15,32 +15,35 @@
 
 %br
 .row
-  .span9
-    = render 'tree', tree: @tree
-  .span3
-    %h5 Repository:
-    %div
-      %p
-        %span.light Bare size is
-        #{@project.repository.size} MB
+  - unless @project.empty_repo?
+    .span9
+      = render 'tree', tree: @tree
+    .span3
+      %h5 Repository:
+      %div
+        %p
+          %span.light Bare size is
+          #{@project.repository.size} MB
 
-      %p
-        = pluralize(@repository.round_commit_count, 'commit')
-      %p
-        = pluralize(@repository.branch_names.count, 'branch')
-      %p
-        = pluralize(@repository.tag_names.count, 'tag')
+        %p
+          = pluralize(@repository.round_commit_count, 'commit')
+        %p
+          = pluralize(@repository.branch_names.count, 'branch')
+        %p
+          = pluralize(@repository.tag_names.count, 'tag')
 
-    - if @recent_tags.present?
-      %hr
-      %h5 Most Recent Tags:
-      %ul.unstyled
-        - @recent_tags.each do |tag|
-          %li
-            %p
-              %i.icon-tag
-              %strong= tag.name
-              %small.light.pull-right
-                %i.icon-calendar
-                  = time_ago_in_words(tag.commit.committed_date)
-                ago
+      - if @recent_tags.present?
+        %hr
+        %h5 Most Recent Tags:
+        %ul.unstyled
+          - @recent_tags.each do |tag|
+            %li
+              %p
+                %i.icon-tag
+                %strong= tag.name
+                %small.light.pull-right
+                  %i.icon-calendar
+                    = time_ago_in_words(tag.commit.committed_date)
+                  ago
+  - else
+    = 'Empty Repository'

features/public/public_projects.feature

@@ -12,3 +12,8 @@ Feature: Public Projects Feature
     When I visit public page for "Community" project
     Then I should see public project details
     And I should see project readme
+
+  Scenario: I visit an empty public project page
+    Given public empty project "Empty Public Project"
+    When I visit empty public project page
+    Then I should see empty public project details
\ No newline at end of file

features/steps/public/projects_feature.rb

@@ -9,6 +9,11 @@ class Spinach::Features::PublicProjectsFeature < Spinach::FeatureSteps
     page.should_not have_content "Enterprise"
   end
 
+  step 'I should see project "Empty Public Project"' do
+    page.should have_content "Empty Public Project"
+    puts page.save_page('foo.html')
+  end
+
   step 'I should see public project details' do
     page.should have_content '32 branches'
     page.should have_content '16 tags'
@@ -22,6 +27,19 @@ class Spinach::Features::PublicProjectsFeature < Spinach::FeatureSteps
     create :project_with_code, name: 'Community', public: true
   end
 
+  step 'public empty project "Empty Public Project"' do
+    create :project, name: 'Empty Public Project', public: true
+  end
+
+  step 'I visit empty public project page' do
+    project = Project.find_by_name('Empty Public Project')
+    visit public_project_path(project)
+  end
+
+  step 'I should see empty public project details' do
+    page.should have_content 'Empty Repository'
+  end
+
   step 'private project "Enterprise"' do
     create :project, name: 'Enterprise'
   end