Refactor/Consolidate Capybara config

- Moved all Capybara settings into `spec/support/capybara.rb` to centralize test configuration.
- Use `Capybara.default_driver = :rack_test` (prior to this, `spec/rails_helper.rb` was overriding the assignment)
- Use `Capybara.javascript_driver = :selenium_chrome_headless_custom` (previously defined in `spec/rails_helper.rb`)
- Use `Capybara.default_max_wait_time = 10`

Author: aaronskiba

spec/rails_helper.rb

@@ -80,21 +80,3 @@
   config.include Devise::Test::ControllerHelpers, type: :view
   config.include Pundit::Matchers, type: :policy
 end
-
-Capybara.register_driver :headless_chrome do |app|
-  options = Selenium::WebDriver::Chrome::Options.new
-  options.add_argument('--headless')
-  options.add_argument('--no-sandbox')
-  options.add_argument('--disable-dev-shm-usage')
-
-  Capybara::Selenium::Driver.new(
-    app,
-    browser: :chrome,
-    options: options
-  )
-end
-
-Capybara.javascript_driver = :headless_chrome
-Capybara.default_driver = :headless_chrome
-# Configure Capybara to wait longer for elements to appear
-Capybara.default_max_wait_time = 20

spec/support/capybara.rb

@@ -3,26 +3,31 @@
 # Use Puma as the webserver for feature tests
 Capybara.server = :puma, { Silent: true }
 
-# Use the fast rack_test driver for non-feature tests by default
-Capybara.default_driver = :rack_test
-
 # Create a custom driver based on Capybara's :selenium_chrome_headless driver
-# This resolves a ElementClickInterceptedError when executing `click_button 'Sign in'` with DMP Assistant
-Capybara.register_driver :selenium_chrome_headless_add_window_size do |app|
+Capybara.register_driver :selenium_chrome_headless_custom do |app|
   # Get a copy of the default options for Capybara's :selenium_chrome_headless driver
   options = Capybara.drivers[:selenium_chrome_headless].call.options[:options].dup
-  options.add_argument('--window-size=1920,1080') # default window-size is only (800x600)
+  # Increasing window size resolves ElementClickInterceptedError (default window-size is only (800x600))
+  options.add_argument('--window-size=1920,1080')
   # Create a new Selenium driver with the customised options
   Capybara::Selenium::Driver.new(app, browser: :chrome, options: options)
 end
 
+# Use the fast rack_test driver for non-feature tests by default
+Capybara.default_driver = :rack_test
+
+Capybara.javascript_driver = :selenium_chrome_headless_custom
+
+# Configure Capybara to wait longer for elements to appear
+Capybara.default_max_wait_time = 10
+
 RSpec.configure do |config|
   config.before(:each, type: :feature, js: false) do
     Capybara.use_default_driver
   end
 
   # Use the Selenium headless Chrome driver for feature tests
   config.before(:each, type: :feature, js: true) do
-    Capybara.current_driver = :selenium_chrome_headless_add_window_size
+    Capybara.current_driver = :selenium_chrome_headless_custom
   end
 end