Expand feature for NUBIC#336 a bit.

(I thought I had merged the fix out, but the feature wasn't failing, so I
tried expanding it to get it to fail. Turns out I didn't merge it out, but
no reason not to keep the more detailed scenario.)

features/step_definitions/surveyor_steps.rb

@@ -244,8 +244,13 @@ def render_context
   page.has_css?("select", :count => i)
 end
 
-Then /^the checkbox for "(.*?)" should be disabled$/ do |text|
+Then /^the checkbox for "(.*?)" should be (dis|en)abled$/ do |text, dis_or_en|
   a = Answer.find_by_text(text)
   a.should_not be_nil
-  find("input[value='#{a.id}']")['disabled'].should == "true"
+  element = find("input[value='#{a.id}']")
+  if dis_or_en == 'dis'
+    element['disabled'].should == 'true'
+  else
+    element['disabled'].should be_nil
+  end
 end

features/surveyor.feature

@@ -649,6 +649,13 @@ Feature: Survey creation
       end
     """
     When I start the "Heat" survey
-    And I click "No other heating source"
+     And I click "No other heating source"
     Then the checkbox for "Refused" should be disabled
-    Then the checkbox for "Don't know" should be disabled
+     And the checkbox for "Don't know" should be disabled
+    When I uncheck "No other heating source"
+    Then the checkbox for "Refused" should be enabled
+    When I check "Electric"
+    Then the checkbox for "Refused" should be enabled
+    When I check "Refused"
+    Then the checkbox for "Electric" should be disabled
+     And the checkbox for "Don't know" should be disabled