Trigger change events when clearing fields, closes #1072

lib/capybara/selenium/node.rb

@@ -37,9 +37,13 @@ class Capybara::Selenium::Node < Capybara::Driver::Node
       path_names = value.to_s.empty? ? [] : value
       native.send_keys(*path_names)
     elsif tag_name == 'textarea' or tag_name == 'input'
+      if value.to_s.empty?
+        native.clear
+      else
         #script can change a readonly element which user input cannot, so dont execute if readonly
         driver.browser.execute_script "arguments[0].value = ''", native unless self[:readonly]
         native.send_keys(value.to_s)
+      end
     elsif native.attribute('isContentEditable')
       #ensure we are focused on the element
       script = <<-JS

lib/capybara/spec/session/fill_in_spec.rb

@@ -129,6 +129,14 @@ Capybara::SpecHelper.spec "#fill_in" do
       @session.find(:css, 'body').click
       @session.find(:css, '.change_event_triggered', :match => :one).should have_text 'some value'
     end
+
+    it 'should trigger change when clearing field' do
+      @session.visit('/with_js')
+      @session.fill_in('with_change_event', :with => '')
+      # click outside the field to trigger the change event
+      @session.find(:css, 'body').click
+      @session.should have_selector(:css, '.change_event_triggered', :match => :one)
+    end
   end
 
   context "with ignore_hidden_fields" do