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@@ -613,8 +613,8 @@ module ActionController #:nodoc:
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       #
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       # This takes the current URL as is and only exchanges the action. In contrast, <tt>url_for :action => 'print'</tt>
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       # would have slashed-off the path components after the changed action.
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-      def url_for(options = nil) #:doc:
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-        case options || {}
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+      def url_for(options = {}) #:doc:
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+        case options
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           when String
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             options
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           when Hash

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@@ -169,6 +169,22 @@ class DefaultUrlOptionsTest < Test::Unit::TestCase
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   end
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 end
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+class EmptyUrlOptionsTest < Test::Unit::TestCase
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+  def setup
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+    @controller = NonEmptyController.new
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+
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+    @request    = ActionController::TestRequest.new
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+    @response   = ActionController::TestResponse.new
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+
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+    @request.host = 'www.example.com'
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+  end
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+
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+  def test_ensure_url_for_works_as_expected_when_called_with_no_options_if_default_url_options_is_not_set
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+    get :public_action
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+    assert_equal "http://www.example.com/non_empty/public_action", @controller.url_for
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+  end
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+end
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+
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 class EnsureNamedRoutesWorksTicket22BugTest < Test::Unit::TestCase
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   def test_named_routes_still_work
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     ActionController::Routing::Routes.draw do |map|
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@@ -180,4 +196,4 @@ class EnsureNamedRoutesWorksTicket22BugTest < Test::Unit::TestCase
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   ensure
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     ActionController::Routing::Routes.load!
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   end
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-end
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\ No newline at end of file
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+end