Use core cuprite definitions

Author: oliverguenther

test/test_helpers/cuprite_setup.rb

@@ -6,13 +6,40 @@
 # Then, we need to register our driver to be able to use it later
 # with #driven_by method.
 Capybara.register_driver(:primer_cuprite) do |app|
-  Capybara::Cuprite::Driver.new(
-    app,
+  options = {
+    process_timeout: 20,
+    timeout: 10,
+    # In case the timeout is not enough, this option can be activated:
+    # pending_connection_errors: false,
     inspector: true,
     # Allow running Chrome in a headful mode by setting HEADLESS env
     # var to a falsey value
-    headless: !ENV["HEADLESS"].in?(%w[n 0 no false])
-  )
+    headless: !ENV["HEADLESS"].in?(%w[n 0 no false]),
+    # workaround for compatibility issues with browserless docker image and ferrum
+    # see https://github.com/rubycdp/ferrum/issues/540
+    flatten: false
+  }
+
+  browser_options = {
+    "disable-dev-shm-usage": nil,
+    "disable-gpu": nil,
+    "disable-popup-blocking": nil,
+    "no-sandbox": nil,
+    "disable-smooth-scrolling": true,
+    # Disable timers being throttled in background pages/tabs. Useful for
+    # parallel test runs.
+    "disable-background-timer-throttling": nil,
+    # Normally, Chrome will treat a 'foreground' tab instead as backgrounded
+    # if the surrounding window is occluded (aka visually covered) by another
+    # window. This flag disables that. Useful for parallel test runs.
+    "disable-backgrounding-occluded-windows": nil,
+    # This disables non-foreground tabs from getting a lower process priority.
+    # Useful for parallel test runs.
+    "disable-renderer-backgrounding": nil
+  }
+
+  driver_options = options.merge(browser_options:)
+  Capybara::Cuprite::Driver.new(app, **driver_options)
 end
 
 # Configure Capybara to use :cuprite driver by default