Fixed tests.

spec/support/capybara/selenium_driver.rb

@@ -27,7 +27,10 @@ Capybara.register_driver(:zammad_chrome) do |app|
     options[:url]     = ENV['REMOTE_URL']
   end
 
-  Capybara::Selenium::Driver.new(app, **options)
+  Capybara::Selenium::Driver.new(app, **options).tap do |driver|
+    # Selenium 4 installs a default file_detector which finds wrong files/directories such as zammad/test.
+    driver.browser.file_detector = nil
+  end
 end
 
 Capybara.register_driver(:zammad_firefox) do |app|
@@ -48,5 +51,8 @@ Capybara.register_driver(:zammad_firefox) do |app|
     options[:url]     = ENV['REMOTE_URL']
   end
 
-  Capybara::Selenium::Driver.new(app, **options)
+  Capybara::Selenium::Driver.new(app, **options).tap do |driver|
+    # Selenium 4 installs a default file_detector which finds wrong files/directories such as zammad/test.
+    driver.browser.file_detector = nil
+  end
 end

test/browser_test_helper.rb

@@ -131,10 +131,10 @@ class TestCase < ActiveSupport::TestCase
       caps.version  = ENV['BROWSER_VERSION']
     end
 
-    # (ironically) required for timeout checks
-    # https://github.com/zalando/zalenium/issues/469#issuecomment-371417340
-    # https://opensource.zalando.com/zalenium/#usage
-    caps['idleTimeout'] = 300
+    # # (ironically) required for timeout checks
+    # # https://github.com/zalando/zalenium/issues/469#issuecomment-371417340
+    # # https://opensource.zalando.com/zalenium/#usage
+    # caps['idleTimeout'] = 300
 
     http_client = Selenium::WebDriver::Remote::Http::Default.new(
       open_timeout: 120,