Add support for fieldset disabled attribute to rack-test driver

lib/capybara/rack_test/node.rb

@@ -91,9 +91,9 @@ class Capybara::RackTest::Node < Capybara::Driver::Node
 
   def disabled?
     if %w(option optgroup).include? tag_name
-      string_node.disabled? || find_xpath("parent::*")[0].disabled?
+      string_node.disabled? || (find_xpath("parent::optgroup")[0] || find_xpath("parent::select")[0]).disabled?
     else
-      string_node.disabled?
+      !!(string_node.disabled? || ((fieldset = find_xpath("parent::fieldset")[0]) && fieldset.disabled?))
     end
   end
 

lib/capybara/spec/session/fill_in_spec.rb

@@ -100,7 +100,7 @@ Capybara::SpecHelper.spec "#fill_in" do
     expect(extract_results(@session)['password']).to eq('supasikrit')
   end
 
-  it "should fill in a field based on current value", twtw: true do
+  it "should fill in a field based on current value" do
     @session.fill_in(currently_with: 'John', with: 'Thomas')
     @session.click_button('awesome')
     expect(extract_results(@session)['first_name']).to eq('Thomas')

lib/capybara/spec/session/find_field_spec.rb

@@ -62,6 +62,7 @@ Capybara::SpecHelper.spec '#find_field' do
   context "with :disabled option" do
     it "should find disabled fields when true" do
       expect(@session.find_field("Disabled Checkbox", disabled: true)[:name]).to eq("form[disabled_checkbox]")
+      expect(@session.find_field("form_disabled_fieldset_child", disabled: true)[:name]).to eq("form[disabled_fieldset_child]")
     end
 
     it "should not find disabled fields when false" do

lib/capybara/spec/session/node_spec.rb

@@ -169,6 +169,19 @@ Capybara::SpecHelper.spec "node" do
       expect(@session.find('//select[@id="form_title"]/option[1]')).not_to be_disabled
     end
 
+    it "should see enabled options in disabled optgroup as disabled" do
+      @session.visit('/form')
+      expect(@session.find('//option', text: "A.B.1")).to be_disabled
+      expect(@session.find('//option', text: "A.2")).not_to be_disabled
+    end
+
+    it "should see inputs in a disabled select as disabled" do
+      @session.visit('/form')
+      expect(@session.find('//input[@id="form_disabled_fieldset_child"]')).to be_disabled
+      expect(@session.find('//input[@id="form_enabled_fieldset_child"]')).not_to be_disabled
+    end
+
+
     it "should be boolean" do
       @session.visit('/form')
       expect(@session.find('//select[@id="form_disabled_select"]/option').disabled?).to be true

lib/capybara/spec/views/form.erb

@@ -343,6 +343,30 @@ New line after and before textarea tag
     </label>
   </p>
 
+  <p>
+    <fieldset disabled="disabled">
+        <input name="form[disabled_fieldset_child]" id="form_disabled_fieldset_child"/>
+    </fieldset>
+  </p>
+
+  <p>
+    <fieldset>
+        <input name="form[enabled_fieldset_child]" id="form_enabled_fieldset_child"/>
+    </fieldset>
+  </p>
+
+  <p>
+    <select>
+      <optgroup label="Level One">
+       <option> A.1 </option>
+       <optgroup label="Level Two" disabled="disabled">
+        <option> A.B.1 </option>
+       </optgroup>
+       <option> A.2 </option>
+      </optgroup>
+    </select>
+  </p>
+
   <p>
     <input type="button" name="form[fresh]" id="fresh_btn" value="i am fresh"/>
     <input type="submit" name="form[awesome]" id="awe123" title="What an Awesome Button" value="awesome"/>