avoid raising

Author: ghiculescu

lib/rails/dom/testing/assertions/selector_assertions.rb

@@ -4,8 +4,6 @@
 module Rails
   module Dom
     module Testing
-      MissingNodeError = Class.new(StandardError)
-
       module Assertions
         # Adds the +assert_dom+ method for use in Rails functional
         # test cases, which can be used to make assertions on the response HTML of a controller
@@ -298,10 +296,9 @@ def nest_selection(selection)
           def nodeset(node)
             if node.is_a?(Nokogiri::XML::NodeSet)
               node
-            elsif node.present?
-              Nokogiri::XML::NodeSet.new(node.document, [node])
             else
-              raise MissingNodeError, 'No node/document found. Did you return a blank body in your response?'
+              node ||= Nokogiri::HTML::Document.parse("")
+              Nokogiri::XML::NodeSet.new(node.document, [node])
             end
           end
         end

test/selector_assertions_test.rb

@@ -324,10 +324,8 @@ def test_assert_select_with_extra_argument
 
   def test_assert_select_on_blank_response
     render_html ""
-    assert_raises Rails::Dom::Testing::MissingNodeError do
-      assert_select "div", 0
-    end
-    assert_raises Rails::Dom::Testing::MissingNodeError do
+    assert_select "div", 0
+    assert_failure(/Expected exactly 1 element matching \"div\", found 0./) do
       assert_select "div", 1
     end
   end