Add tests for wiki files showing.

features/project/wiki.feature

@@ -45,3 +45,20 @@ Feature: Project Wiki
     And I browse to that Wiki page
     And I click on the "Pages" button
     Then I should see the existing page in the pages list
+
+  Scenario: Image in wiki repo shown on the page
+    Given I have an existing Wiki page with images linked on page
+    And I browse to wiki page with images
+    Then Image should be shown on the page
+
+  Scenario: File does not exist in wiki repo
+    Given I have an existing Wiki page with images linked on page
+    And I browse to wiki page with images
+    And I click on image link
+    Then I should see the new wiki page form
+
+  Scenario: File exists in wiki repo
+    Given I have an existing Wiki page with images linked on page
+    And I browse to wiki page with images
+    And I click on existing image link
+    Then I should see the image from wiki repo

features/steps/project/wiki.rb

@@ -86,6 +86,44 @@ class Spinach::Features::ProjectWiki < Spinach::FeatureSteps
     page.should have_content @page.title
   end
 
+  Given 'I have an existing Wiki page with images linked on page' do
+    wiki.create_page("pictures", "Look at this [image](image.jpg)\n\n ![image](image.jpg)", :markdown, "first commit")
+    @wiki_page = wiki.find_page("pictures")
+  end
+
+  And 'I browse to wiki page with images' do
+    visit project_wiki_path(project, @wiki_page)
+  end
+
+  And 'I click on existing image link' do
+    Gollum::Wiki.any_instance.should_receive(:file).with("image.jpg", "master", true).and_return(Gollum::File.new(wiki.wiki))
+    Gollum::File.any_instance.should_receive(:mime_type).and_return("image/jpeg")
+    page.should have_link('image', href: "image.jpg")
+    click_on "image"
+  end
+
+  Then 'I should see the image from wiki repo' do
+    url = URI.parse(current_url)
+    url.path.should match("wikis/image.jpg")
+    page.should_not have_xpath('/html') # Page should render the image which means there is no html involved
+  end
+
+  Then 'Image should be shown on the page' do
+    page.should have_xpath("//img[@src=\"image.jpg\"]")
+  end
+
+  And 'I click on image link' do
+    page.should have_link('image', href: "image.jpg")
+    click_on "image"
+  end
+
+  Then 'I should see the new wiki page form' do
+    url = URI.parse(current_url)
+    url.path.should match("wikis/image.jpg")
+    page.should have_content('New Wiki Page')
+    page.should have_content('Editing - image.jpg')
+  end
+
   def wiki
     @project_wiki = ProjectWiki.new(project, current_user)
   end