How to use add_preference method of Selenium.WebDriver.Firefox Package

Best Selenium code snippet using Selenium.WebDriver.Firefox.add_preference

driver_test.rb

Source: driver_test.rb Github

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...46 test "define extra capabilities using chrome" do47 driver = ActionDispatch::SystemTesting::Driver.new(:selenium, screen_size: [1400, 1400], using: :chrome) do |option|48 option.add_argument("start-maximized")49 option.add_emulation(device_name: "iphone 6")50 option.add_preference(:detach, true)51 end52 driver.use53 browser_options = driver.__send__(:browser_options)54 expected = {55 "goog:chromeOptions" => {56 "args" => ["start-maximized"],57 "mobileEmulation" => { "deviceName" => "iphone 6" },58 "prefs" => { "detach" => true }59 },60 "browserName" => "chrome"61 }62 assert_equal expected, browser_options[:options].as_json63 end64 test "define extra capabilities using headless_chrome" do65 driver = ActionDispatch::SystemTesting::Driver.new(:selenium, screen_size: [1400, 1400], using: :headless_chrome) do |option|66 option.add_argument("start-maximized")67 option.add_emulation(device_name: "iphone 6")68 option.add_preference(:detach, true)69 end70 driver.use71 browser_options = driver.__send__(:browser_options)72 expected = {73 "goog:chromeOptions" => {74 "args" => ["--headless", "start-maximized"],75 "mobileEmulation" => { "deviceName" => "iphone 6" },76 "prefs" => { "detach" => true }77 },78 "browserName" => "chrome"79 }80 assert_equal expected, browser_options[:options].as_json81 end82 test "define extra capabilities using firefox" do83 driver = ActionDispatch::SystemTesting::Driver.new(:selenium, screen_size: [1400, 1400], using: :firefox) do |option|84 option.add_preference("browser.startup.homepage", "http:/​/​www.seleniumhq.com/​")85 option.add_argument("--host=127.0.0.1")86 end87 driver.use88 browser_options = driver.__send__(:browser_options)89 expected = {90 "moz:firefoxOptions" => {91 "args" => ["--host=127.0.0.1"],92 "prefs" => { "browser.startup.homepage" => "http:/​/​www.seleniumhq.com/​" }93 },94 "browserName" => "firefox"95 }96 assert_equal expected, browser_options[:options].as_json97 end98 test "define extra capabilities using headless_firefox" do99 driver = ActionDispatch::SystemTesting::Driver.new(:selenium, screen_size: [1400, 1400], using: :headless_firefox) do |option|100 option.add_preference("browser.startup.homepage", "http:/​/​www.seleniumhq.com/​")101 option.add_argument("--host=127.0.0.1")102 end103 driver.use104 browser_options = driver.__send__(:browser_options)105 expected = {106 "moz:firefoxOptions" => {107 "args" => ["-headless", "--host=127.0.0.1"],108 "prefs" => { "browser.startup.homepage" => "http:/​/​www.seleniumhq.com/​" }109 },110 "browserName" => "firefox"111 }112 assert_equal expected, browser_options[:options].as_json113 end114 test "does not define extra capabilities" do...

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options.rb

Source: options.rb Github

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...73 # Add a preference that is only applied to the user profile in use.74 #75 # @example Set the default homepage76 # options = Selenium::WebDriver::Firefox::Options.new77 # options.add_preference('browser.startup.homepage', 'http:/​/​www.seleniumhq.com/​')78 #79 # @param [String] name Key of the preference80 # @param [Boolean, String, Integer] value Value of the preference81 #82 def add_preference(name, value)83 prefs[name] = value84 end85 #86 # Run Firefox in headless mode.87 #88 # @example Enable headless mode89 # options = Selenium::WebDriver::Firefox::Options.new90 # options.headless!91 #92 def headless!93 add_argument '-headless'94 end95 #96 # Sets Firefox profile....

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webdriver_run.rb

Source: webdriver_run.rb Github

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...42 end43 elsif %i[firefox firefox_headless].include? TestBench.browser44 Webdrivers::Geckodriver.update45 options = Selenium::WebDriver::Firefox::Options.new46 options.add_preference("download.prompt_for_download", false)47 options.add_preference("profile.content_settings.exceptions.automatic_downloads.*.setting", 1)48 options.add_preference("profile.content_settings.popups", 0)49 options.add_preference("browser.download.dir", DownloadHelper.path)50 options.add_preference("browser.download.folderList", 2)51 options.add_preference("browser.helperApps.neverAsk.saveToDisk", "text/​csv,text/​tsv,application/​pdf,application/​doc,application/​docx,image/​jpeg,application/​octet-stream doc xls pdf txt")52 # profile.native_events = true53 if TestBench.browser == :firefox54 puts "Using Firefox"55 else56 puts "Using Firefox Headless"57 options.headless!58 end59 Capybara::Selenium::Driver.new(60 app,61 browser: :firefox,62 http_client: client,63 options: options,64 )65 end...

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retrieveList.rb

Source: retrieveList.rb Github

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...27 def configure_capybara(app_host)28 Capybara.register_driver :golden do |app|29 # The new way will be something like this30 ###options = Selenium::WebDriver::Firefox::Options.new31 ###options.add_preference('browser.download.folderList', 2) # magic number32 ###options.add_preference('browser.download.dir', download_dir)33 ###options.add_preference('browser.helperApps.neverAsk.saveToDisk',34 ### 'text/​plain, application/​octet-stream')35 ###Capybara::Selenium::Driver.new(app, browser: :firefox, options: options)36 #### That last line does not work as hoped37 # This way is deprecated in lib/​selenium/​webdriver/​firefox/​marionette/​driver.rb38 # but still works39 # You can view the list of Firefox preferences by typing "about:config"40 # into the Firefox address bar41 # Much web searching and experimentation yields these settings42 profile = Selenium::WebDriver::Firefox::Profile.new43 profile['browser.download.folderList'] = 2 # magic number44 profile['browser.download.dir'] = download_dir45 profile['browser.download.useDownloadDir'] = true46 profile['browser.helperApps.neverAsk.saveToDisk'] =47 'text/​plain, application/​octet-stream'...

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web.rb

Source: web.rb Github

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...8Capybara.register_driver :firefox do |app|9 profile = Selenium::WebDriver::Firefox::Profile.new10 profile['general.useragent.override'] = user_agent11 options = Selenium::WebDriver::Firefox::Options.new12 options.add_preference 'dom.webdriver.enabled', false13 options.add_preference 'dom.webnotifications.enabled', false14 options.add_preference 'dom.push.enabled', false15 options.profile = profile16 client = Selenium::WebDriver::Remote::Http::Default.new17 client.open_timeout = wait_time18 client.read_timeout = wait_time19 Capybara::Selenium::Driver.new(20 app,21 browser: :firefox,22 options: options,23 http_client: client24 )25end26Capybara.register_driver :chrome do |app|27 options = Selenium::WebDriver::Chrome::Options.new28 options.add_argument("--user-agent=#{user_agent}")...

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portal_env.rb

Source: portal_env.rb Github

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...43 # options = Selenium::WebDriver::Ie::Options.new44 # options = Selenium::WebDriver::Edge::Options.new45 # options = Selenium::WebDriver::Safari::Options.new46 # options.add_argument('--headless') # configure the driver to run in headless mode47 options.add_preference('profile.managed_default_content_settings.notifications', 1)48 options.add_preference('profile.managed_default_content_settings.cookies', 1)49 options.add_preference('profile.managed_default_content_settings.plugins', 1)50 options.add_preference('profile.managed_default_content_settings.geolocation', 1)51 options.add_preference('profile.managed_default_content_settings.images', 1)52 options.add_preference('profile.managed_default_content_settings.media_stream', 1)53 options.add_preference('profile.managed_default_content_settings.popups', 1)54 $web_driver = Selenium::WebDriver.for :chrome, options: options55 #$web_driver = Selenium::WebDriver.for :firefox, options: options, prefs: preferences56 # $web_driver = Selenium::WebDriver.for :ie, options: options, prefs: preferences57 # $web_driver = Selenium::WebDriver.for :edge, options: options, prefs: preferences58 # $web_driver = Selenium::WebDriver.for :safari, options: options, prefs: preferences59 $web_driver.manage.timeouts.page_load = 36060 $web_driver.manage.window.maximize61 Selenium::WebDriver::Wait.new(timeout: 10)62 $web_driver.manage.timeouts.implicit_wait = 1063 $web_driver.navigate.to "https:/​/​#{ENV['HOST']}.hi.guru/​"64 $web_driver.navigate.to "https:/​/​google.com/​"65end...

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fuckcisco.rb

Source: fuckcisco.rb Github

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...18 profile['browser.download.folderList'] = 219 profile['browser.helperApps.neverAsk.saveToDisk'] = 'application/​vnd.debian.binary-package, application/​zip, binary/​octet-stream'20 options = Selenium::WebDriver::Firefox::Options.new(profile: profile)21 options.add_argument('--headless')22 options.add_preference('download.directory_upgrade', true)23 options.add_preference('download.folderList', 2)24 options.add_preference('download.prompt_for_download', false)25 options.add_preference('download.dir', DIR)26 options.add_preference('download.default_directory', DIR)27 options.add_preference('browser.helperApps.neverAsk.saveToDisk', 'application/​vnd.debian.binary-package, application/​zip, binary/​octet-stream')28 29 @dr = Selenium::WebDriver.for :firefox, capabilities: options30 @cred = JSON.parse(File.read('./​credentials.json'))31 @dr.navigate.to URL 32 end33 def wait34 Selenium::WebDriver::Wait.new(:timeout => 60)35 end36 37 def run38 puts "logging in."39 email = wait.until { @dr.find_element(:id => EMAIL_FIELD_ID) }40 submit = wait.until { @dr.find_element(:id => EMAIL_SUBMIT_ID) }41 email.send_keys @cred["email"]...

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env.rb

Source: env.rb Github

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...26puts "Browser : #{browser}"27Capybara.register_driver :firefox do |app|28 profile = Selenium::WebDriver::Firefox::Profile.new29 options = Selenium::WebDriver::Firefox::Options.new30 options.add_preference 'dom.webdriver.enabled', false31 options.add_preference 'dom.webnotifications.enabled', false32 options.add_preference 'dom.push.enabled', false33 options.profile = profile34 client = Selenium::WebDriver::Remote::Http::Default.new35 client.open_timeout = wait_time36 client.read_timeout = wait_time37 Capybara::Selenium::Driver.new(38 app,39 browser: :firefox,40 options: options,41 http_client: client42 )43end44Capybara.register_driver :chrome do |app|45 options = Selenium::WebDriver::Chrome::Options.new46 options.add_argument('--no-sandbox')...

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add_preference

Using AI Code Generation

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1profile.add_preference('browser.startup.homepage', 'http:/​/​www.google.com')2profile.add_preference('startup.homepage_welcome_url', 'http:/​/​www.google.com')3profile.add_preference('startup.homepage_welcome_url.additional', 'http:/​/​www.google.com')4profile.add_extension("FireBug-1.6.1.xpi")5profile.set_preference('browser.startup.homepage', 'http:/​/​www.google.com')6profile.set_preference('startup.homepage_welcome_url', 'http:/​/​www.google.com')7profile.set_preference('startup.homepage_welcome_url.additional', 'http:/​/​www.google.com')8profile.set_proxy(:http => 'proxy.example.com:8080', :ftp => 'proxy.example.com:8080')9profile.set_proxy(:http => 'proxy.example.com:8080', :ftp => 'proxy.example.com:8080')

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add_preference

Using AI Code Generation

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1profile.add_extension File.join(Dir.pwd, "1.xpi")2profile.add_certificate File.join(Dir.pwd, "1.pem"), "1"3profile.add_encoded_extension File.read(File.join(Dir.pwd, "1.xpi"))

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add_preference

Using AI Code Generation

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1driver.add_preference("browser.startup.homepage", "http:/​/​www.google.com")2driver.add_preference("browser.startup.page", 1)3binary = Selenium::WebDriver::Firefox::Binary.new("/​usr/​bin/​firefox")4binary = Selenium::WebDriver::Firefox::Binary.new("/​usr/​bin/​firefox")

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add_preference

Using AI Code Generation

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1driver.manage.add_cookie(:name => "cookie1", :value => "value1")2driver.manage.add_cookie(:name => "cookie2", :value => "value2")3{:name=>"cookie1", :value=>"value1", :path=>"/​", :domain=>"www.google.com", :expires=>nil, :secure=>false}4{:name=>"cookie2", :value=>"value2", :path=>"/​", :domain=>"www.google.com", :expires=>nil, :secure=>false}5driver.manage.delete_cookie(name)6driver.manage.add_cookie(:name => "cookie1", :value => "value1")7driver.manage.add_cookie(:name => "cookie2", :value => "value2")8driver.manage.delete_cookie("cookie1")9{:name=>"cookie1", :value=>"value1", :path=>"/​", :domain=>"www.google.com", :expires=>nil, :secure=>false}10{:name=>"cookie2", :value=>"value2", :path=>"/​", :domain=>"www.google.com", :expires=>nil, :secure=>false}11{:name=>"cookie2", :value=>"value2", :path=>"/​", :domain=>"www.google.com", :expires=>nil, :secure=>false}

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add_preference

Using AI Code Generation

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1element = driver.find_element(:name, 'q')2element = driver.find_element(:name, 'q')3element = driver.find_element(:name, 'q')

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add_preference

Using AI Code Generation

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1profile.add_preference('browser.startup.homepage', 'http:/​/​www.google.com')2profile.add_preference('browser.startup.homepage_override.mstone', 'ignore')3driver = Selenium::WebDriver.for(:firefox, :profile => profile)4profile.add_extension('C:\path\to\extension.xpi')5driver = Selenium::WebDriver.for(:firefox, :profile => profile)6profile.add_certificate('C:\path\to\certificate.pem')7driver = Selenium::WebDriver.for(:firefox, :profile => profile)8profile.set_proxy(:http => 'server:port',9driver = Selenium::WebDriver.for(:firefox, :profile => profile)

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add_preference

Using AI Code Generation

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1fp.add_preference('network.proxy.type', 1)2fp.add_preference('network.proxy.http', 'proxy.example.com')3fp.add_preference('network.proxy.http_port', 8080)4fp.add_extension('/​path/​to/​extension.xpi')5element = driver.find_element(:name, 'q')6element = driver.find_element(:name, 'q')

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add_preference

Using AI Code Generation

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1profile.add_preference('browser.startup.homepage', 'http:/​/​www.google.com')2profile.add_preference('browser.startup.homepage_override.mstone', 'ignore')3driver = Selenium::WebDriver.for(:firefox, :profile => profile)4profile.add_extension('C:\path\to\extension.xpi')5driver = Selenium::WebDriver.for(:firefox, :profile => profile)6profile.add_certificate('C:\path\to\certificate.pem')7driver = Selenium::WebDriver.for(:firefox, :profile => profile)8profile.set_proxy(:http => 'server:port',9driver = Selenium::WebDriver.for(:firefox, :profile => profile)

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add_preference

Using AI Code Generation

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1fp.add_preference('network.proxy.type', 1)2fp.add_preference('network.proxy.http', 'proxy.example.com')3fp.add_preference('network.proxy.http_port', 8080)4fp.add_extension('/​path/​to/​extension.xpi')

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add_preference

Using AI Code Generation

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1fp.add_preference('network.proxy.type', 1)2fp.add_preference('network.proxy.http', 'proxy.example.com')3fp.add_preference('network.proxy.http_port', 8080)4fp.add_extension('/​path/​to/​extension.xpi')

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StackOverFlow community discussions

Questions
Discussion

Unsupported command-line flag: --ignore-certificate-errors (in Ruby)

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Capybara headless download

The Ruby selenium-webdriver API doesn't expose a separate Chrome options object like Java/Python but you can set the options via "Capabilities".

The Capabilities web page provides a Ruby example and the table of recognized capabilities that you can inject. Plugging those together with excludeSwitches:

caps = Selenium::WebDriver::Remote::Capabilities.chrome("chromeOptions" => {"excludeSwitches" => [ "--ignore-certificate-errors" ]})
driver = Selenium::WebDriver.for :chrome, desired_capabilities: caps

Take a look at Watir too, it's a front end for WebDriver.
Their examples show how you can send a :switches array which is passed straight through to the web driver so you can do the same. That makes adding other switches a bit easier rather than going through capabilities.

There is a chromedriver issue on the topic as well. There are posts detailing that you can add a --test-type argument to work around the certificate issue and ruby code examples like above.

https://stackoverflow.com/questions/24874707/unsupported-command-line-flag-ignore-certificate-errors-in-ruby

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