Add tests for commits graph

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

features/project/graph.feature

@@ -2,8 +2,13 @@ Feature: Project Graph
   Background:
     Given I sign in as a user
     And I own project "Shop"
-    And I visit project "Shop" graph page
 
   @javascript
   Scenario: I should see project graphs
+    When I visit project "Shop" graph page
     Then page should have graphs
+
+  @javascript
+  Scenario: I should see project commits graphs
+    When I visit project "Shop" commits graph page
+    Then page should have commits graphs

features/steps/project/graph.rb

@@ -10,4 +10,14 @@ class Spinach::Features::ProjectGraph < Spinach::FeatureSteps
     project = Project.find_by(name: "Shop")
     visit project_graph_path(project, "master")
   end
+
+  step 'I visit project "Shop" commits graph page' do
+    project = Project.find_by(name: "Shop")
+    visit commits_project_graph_path(project, "master")
+  end
+
+  step 'page should have commits graphs' do
+    page.should have_content "Commits statistic for master"
+    page.should have_content "Commits per day of month"
+  end
 end