Feature which only has a Background with steps causes an exception [#306

 state:resolved]

History.txt

@@ -10,6 +10,7 @@ With the addition of Latvian and Hungarian Cucumber now supports 32(!!) language
 * Pick up failure on after hook (#272 Aslak Hellesøy)
 
 === Bugfixes
+* Feature which only has a Background with steps causes an exception (#306 Aslak Hellesøy)
 * Gem no longer depends on Hoe (Aslak Hellesøy)
 * Span html tags appear on HTML results with 0.3.0 (#299 Aslak Hellesøy)
 * Fixed incorrect colours in pretty formatter's table headers for outline tables (Aslak Hellesøy)

Manifest.txt

@@ -206,6 +206,7 @@ examples/tickets/features/272/hooks_steps.rb
 examples/tickets/features/279/py_string_indent.feature
 examples/tickets/features/279/py_string_indent.steps.rb
 examples/tickets/features/279/wrong.feature_
+examples/tickets/features/306/only_background.feature
 examples/tickets/features/lib/eatting_machine.rb
 examples/tickets/features/lib/pantry.rb
 examples/tickets/features/scenario_outline.feature

examples/tickets/features/306/only_background.feature

@@ -0,0 +1,4 @@
+Feature: woo yeah
+
+  Background:
+    Given passing step without a table

lib/cucumber/ast/background.rb

@@ -4,7 +4,6 @@ module Cucumber
   module Ast
     class Background
       include FeatureElement
-      attr_writer :feature
 
       def initialize(comment, line, keyword, name, steps)
         @comment, @line, @keyword, @name, @steps = comment, line, keyword, name, StepCollection.new(steps)

lib/cucumber/ast/feature.rb

@@ -8,6 +8,7 @@ class Feature
       def initialize(background, comment, tags, name, feature_elements)
         @background, @comment, @tags, @name, @feature_elements = background, comment, tags, name, feature_elements
 
+        background.feature = self if background
         @feature_elements.each do |feature_element|
           feature_element.feature = self
         end

lib/cucumber/ast/feature_element.rb

@@ -2,6 +2,8 @@
 
 module Cucumber
   module FeatureElement
+    attr_writer :feature
+
     def attach_steps(steps)
       steps.each {|step| step.feature_element = self}
     end

lib/cucumber/ast/scenario.rb

@@ -17,11 +17,6 @@ def initialize(background, comment, tags, line, keyword, name, steps)
         end
       end
 
-      def feature=(feature)
-        @feature = feature
-        @background.feature = feature if @background
-      end
-
       def accept(visitor)
         visitor.visit_comment(@comment)
         visitor.visit_tags(@tags)

lib/cucumber/ast/scenario_outline.rb

@@ -25,11 +25,6 @@ def initialize(background, comment, tags, line, keyword, name, steps, example_se
         end
       end
 
-      def feature=(feature)
-        @feature = feature
-        @background.feature = feature if @background
-      end
-
       def accept(visitor)
         visitor.visit_comment(@comment)
         visitor.visit_tags(@tags)