Add link_to :back which uses your referrer with a fallback to a javascript link. #7366 [eventualbuddha, tarmo]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7791 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 11 insertions, 1 deletions

diff --git a/actionpack/test/template/url_helper_test.rb b/actionpack/test/template/url_helper_test.rb
index dc0186f9df..5c7abdfe56 100644
--- a/actionpack/test/template/url_helper_test.rb
+++ b/actionpack/test/template/url_helper_test.rb
@@ -1,6 +1,6 @@
 require "#{File.dirname(__FILE__)}/../abstract_unit"
 
-RequestMock = Struct.new("Request", :request_uri, :protocol, :host_with_port)
+RequestMock = Struct.new("Request", :request_uri, :protocol, :host_with_port, :env)
 
 class UrlHelperTest < Test::Unit::TestCase
   include ActionView::Helpers::AssetTagHelper
@@ -109,6 +109,16 @@ class UrlHelperTest < Test::Unit::TestCase
     assert_dom_equal "<a href=\"http://www.example.com?q1=v1&amp;q2=v2\">http://www.example.com?q1=v1&amp;q2=v2</a>", link_to(nil, "http://www.example.com?q1=v1&amp;q2=v2")
   end
 
+  def test_link_tag_with_back
+    @controller.request = RequestMock.new("http://www.example.com/weblog/show", nil, nil, {'HTTP_REFERER' => 'http://www.example.com/referer'})
+    assert_dom_equal "<a href=\"http://www.example.com/referer\">go back</a>", link_to('go back', :back)
+  end
+  
+  def test_link_tag_with_back_and_no_referer
+    @controller.request = RequestMock.new("http://www.example.com/weblog/show", nil, nil, {})
+    assert_dom_equal "<a href=\"javascript:history.back()\">go back</a>", link_to('go back', :back)
+  end
+
   def test_link_tag_with_img
     assert_dom_equal "<a href=\"http://www.example.com\"><img src='/favicon.jpg' /></a>", link_to("<img src='/favicon.jpg' />", "http://www.example.com")
   end