Display project push rule in form instead of sample push rule

Closes #1924
Remove Spinach test that did not test much with RSpec feature spec
that reproduces the problem.

app/controllers/projects/push_rules_controller.rb

@@ -8,12 +8,6 @@ class Projects::PushRulesController < Projects::ApplicationController
 
   layout "project_settings"
 
-  def index
-    project.create_push_rule unless project.push_rule
-
-    @push_rule = project.push_rule
-  end
-
   def update
     @push_rule = project.push_rule
     @push_rule.update_attributes(push_rule_params)

app/controllers/projects/settings/repository_controller.rb

@@ -2,7 +2,6 @@ module Projects
   module Settings
     class RepositoryController < Projects::ApplicationController
       before_action :authorize_admin_project!
-      before_action :push_rule, only: [:show]
       before_action :remote_mirror, only: [:show]
 
       def show
@@ -10,6 +9,9 @@ module Projects
           .new(@project, current_user: current_user)
 
         define_protected_branches
+
+        project.create_push_rule unless project.push_rule
+        @push_rule = project.push_rule
       end
 
       private
@@ -20,10 +22,6 @@ module Projects
         load_gon_index
       end
 
-      def push_rule
-        @push_rule ||= PushRule.find_or_create_by(is_sample: true)
-      end
-
       def remote_mirror
         @remote_mirror = @project.remote_mirrors.first_or_initialize
       end

features/project/push_rules.feature

-Feature: Push Rules
-  Background:
-    Given I sign in as a user
-    And I own project "Shop"
-
-  Scenario: I should see push rule form
-    When I visit project push rules page
-    Then I should see push rule form

features/steps/project/push_rules.rb

-require 'webmock'
-
-class Spinach::Features::PushRules < Spinach::FeatureSteps
-  include SharedAuthentication
-  include SharedProject
-  include SharedPaths
-  include RSpec::Matchers
-  include RSpec::Mocks::ExampleMethods
-  include WebMock::API
-
-  step 'I should see push rule form' do
-    expect(page).to have_selector('input#push_rule_commit_message_regex')
-    expect(page).to have_content "Commit message"
-    expect(page).to have_content "Commit author's email"
-  end
-end

features/steps/shared/paths.rb

@@ -283,10 +283,6 @@ module SharedPaths
     visit group_hooks_path(@group)
   end
 
-  step 'I visit project push rules page' do
-    visit namespace_project_settings_repository_path(@project.namespace, @project)
-  end
-
   step 'I visit project deploy keys page' do
     visit namespace_project_deploy_keys_path(@project.namespace, @project)
   end

spec/features/projects/settings/ee/push_rules_settings_spec.rb

+require 'spec_helper'
+
+describe 'Project settings > [EE] Push Rules', feature: true do
+  let(:user) { create(:user) }
+  let(:project) { create(:project_empty_repo) }
+
+  before do
+    project.team << [user, :master]
+    login_as(user)
+  end
+
+  describe 'editing a push rule' do
+    let(:commit_message) { 'Required part of every message' }
+    let(:input_id) { 'push_rule_commit_message_regex' }
+
+    before do
+      visit namespace_project_settings_repository_path(project.namespace, project)
+
+      fill_in input_id, with: commit_message
+      click_button 'Save Push Rules'
+    end
+
+    it 'displays the new value in the form' do
+      expect(find("##{input_id}").value).to eq commit_message
+    end
+
+    it 'saves the new value' do
+      expect(project.push_rule.commit_message_regex).to eq commit_message
+    end
+  end
+end