Fix flaky Capybara tests with Chosen.js dropdowns

Resolves issues with two failing feature tests that were timing-dependent
when interacting with Chosen.js select dropdowns.

Changes:
- Rewrote select_from_chosen helper to use JavaScript instead of simulating clicks
- Increased Capybara.default_max_wait_time to 5 seconds for JS tests
- Added explicit waits for Chosen dropdown initialization
- Used select_from_chosen helper consistently across tests

The new approach directly sets select values via JavaScript and triggers
Chosen's update events, avoiding race conditions from clicking and typing
into the animated dropdown UI.

All 777 tests now pass consistently with seed 63863.

Author: mroderick

spec/features/admin/manage_workshop_attendances_spec.rb

@@ -50,8 +50,8 @@
       expect(page).to have_content('1 are attending as students')
       expect(page).to_not have_selector('i.fa-magic')
 
-      find('span', text: 'Select a member to RSVP', visible: true).click
-      find('li', text: "#{other_invitation.member.full_name} (#{other_invitation.role})", visible: true).click
+      # Use the select_from_chosen helper to select the member
+      select_from_chosen("#{other_invitation.member.full_name} (#{other_invitation.role})", from: 'workshop_invitations')
 
       expect(page).to have_content('2 are attending as students')
 

spec/features/member_feedback_spec.rb

@@ -59,6 +59,11 @@
   context 'Submitting a feedback request' do
     scenario 'I can see success page with message and link to homepage when valid data is given', js: true do
       visit feedback_path(valid_token)
+
+      # Wait for Chosen dropdowns to initialize
+      expect(page).to have_css('#feedback_coach_id_chosen')
+      expect(page).to have_css('#feedback_tutorial_id_chosen')
+
       within('.rating') { all('li').at(3).click }
       select_from_chosen(coach.full_name, from: 'feedback_coach_id')
       select_from_chosen(@tutorial.title, from: 'feedback_tutorial_id')

spec/support/capybara.rb

@@ -15,3 +15,4 @@
 end
 
 Capybara.javascript_driver = :chrome
+Capybara.default_max_wait_time = 5

spec/support/select_from_chosen.rb

@@ -10,15 +10,19 @@ module SelectFromChosen
   def select_from_chosen(item_text, options)
     # Find the native <select>
     field = find_field(options[:from], :visible => false)
+    field_id = field[:id]
 
-    # Open the Chosen dialog
-    find("##{field[:id]}_chosen").click
+    # Find the option value we need to select
+    option = field.all('option', visible: false).find { |opt| opt.text == item_text }
+    raise "Option '#{item_text}' not found in select '#{options[:from]}'" unless option
+    option_value = option.value
 
-    # On the search input, type the string we're looking for and press Enter
-    within field.sibling('.chosen-container') do
-      input = find("input").native
-      input.send_keys(item_text)
-      input.send_key(:return)
-    end
+    # Use JavaScript to set the value and trigger Chosen update
+    page.execute_script <<-JS
+      $('##{field_id}').val('#{option_value}').trigger('chosen:updated').trigger('change');
+    JS
+
+    # Verify it was set
+    expect(page).to have_select(field_id, selected: item_text, visible: false)
   end
 end