Add test and doc for changing Firefox browser language and locale

Fixes #2361

Signed-off-by: Viet Nguyen Duc <[email protected]>

Author: VietND96

.gitignore

@@ -44,6 +44,7 @@ pip-selfcheck.json
 
 # End of https://www.gitignore.io/api/virtualenv
 tests/tests/*
+tests/target/*
 
 # Created by https://www.gitignore.io/api/python
 

Makefile

@@ -584,8 +584,13 @@ test_edge_standalone:
       ;; \
   esac
 
-test_firefox:
-	PLATFORMS=$(PLATFORMS) VERSION=$(TAG_VERSION) NAMESPACE=$(NAMESPACE) BASE_RELEASE=$(BASE_RELEASE) BASE_VERSION=$(BASE_VERSION) BINDING_VERSION=$(BINDING_VERSION) SKIP_BUILD=true ./tests/bootstrap.sh NodeFirefox
+test_firefox_download_lang_packs:
+	FIREFOX_VERSION=$$(docker run --rm $(NAME)/node-firefox:$(TAG_VERSION) firefox --version | awk '{print $$3}') ; \
+	./NodeFirefox/get_lang_package.sh $$FIREFOX_VERSION ./tests/target/firefox_lang_packs
+
+test_firefox: test_firefox_download_lang_packs
+	PLATFORMS=$(PLATFORMS) VERSION=$(TAG_VERSION) NAMESPACE=$(NAMESPACE) BASE_RELEASE=$(BASE_RELEASE) BASE_VERSION=$(BASE_VERSION) BINDING_VERSION=$(BINDING_VERSION) SKIP_BUILD=true \
+	TEST_FIREFOX_INSTALL_LANG_PACKAGE=true ./tests/bootstrap.sh NodeFirefox
 
 test_firefox_standalone:
 	PLATFORMS=$(PLATFORMS) VERSION=$(TAG_VERSION) NAMESPACE=$(NAMESPACE) BASE_RELEASE=$(BASE_RELEASE) BASE_VERSION=$(BASE_VERSION) BINDING_VERSION=$(BINDING_VERSION) SKIP_BUILD=true ./tests/bootstrap.sh StandaloneFirefox
@@ -645,6 +650,10 @@ test_video: video hub chrome firefox edge chromium
 	docker_compose_file=$(or $(DOCKER_COMPOSE_FILE), docker-compose-v3-test-video.yml) ; \
 	list_of_tests_amd64=$(or $(LIST_OF_TESTS_AMD64), "NodeChrome NodeChromium NodeFirefox NodeEdge") ; \
 	list_of_tests_arm64=$(or $(LIST_OF_TESTS_ARM64), "NodeChromium NodeFirefox") ; \
+	TEST_FIREFOX_INSTALL_LANG_PACKAGE=$(or $(TEST_FIREFOX_INSTALL_LANG_PACKAGE), "true") ; \
+	if [ "$${TEST_FIREFOX_INSTALL_LANG_PACKAGE}" = "true" ]; then \
+		make test_firefox_download_lang_packs ; \
+	fi ; \
 	if [ "$(PLATFORMS)" = "linux/amd64" ]; then \
 			list_nodes="$${list_of_tests_amd64}" ; \
 	else \
@@ -659,6 +668,7 @@ test_video: video hub chrome firefox edge chromium
 			echo BINDING_VERSION=$(BINDING_VERSION) >> .env ; \
 			echo TEST_DELAY_AFTER_TEST=$(or $(TEST_DELAY_AFTER_TEST), 2) >> .env ; \
 			echo SELENIUM_ENABLE_MANAGED_DOWNLOADS=$(or $(SELENIUM_ENABLE_MANAGED_DOWNLOADS), "true") >> .env ; \
+			echo TEST_FIREFOX_INSTALL_LANG_PACKAGE=$${TEST_FIREFOX_INSTALL_LANG_PACKAGE} >> .env ; \
 			echo BASIC_AUTH_USERNAME=$(or $(BASIC_AUTH_USERNAME), "admin") >> .env ; \
 			echo BASIC_AUTH_PASSWORD=$(or $(BASIC_AUTH_PASSWORD), "admin") >> .env ; \
 			echo SUB_PATH=$(or $(SUB_PATH), "/selenium") >> .env ; \

NodeBase/Dockerfile

@@ -16,7 +16,6 @@ ARG LANG_WHICH=en
 ARG LANG_WHERE=US
 ARG ENCODING=UTF-8
 ARG LANGUAGE=${LANG_WHICH}_${LANG_WHERE}.${ENCODING}
-ARG TARGETARCH
 
 USER root
 

NodeChrome/Dockerfile

@@ -15,7 +15,6 @@ USER root
 #       google-chrome-unstable
 #============================================
 ARG CHROME_VERSION="google-chrome-stable"
-ARG TARGETARCH
 RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | gpg --dearmor | tee /etc/apt/trusted.gpg.d/google.gpg >/dev/null \
   && echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list \
   && apt-get update -qqy \

NodeEdge/Dockerfile

@@ -13,7 +13,6 @@ USER root
 #  e.g. microsoft-edge-beta=88.0.692.0-1
 #============================================
 ARG EDGE_VERSION="microsoft-edge-stable"
-ARG TARGETARCH
 RUN wget -q -O - https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | tee /etc/apt/trusted.gpg.d/microsoft.gpg >/dev/null \
   && echo "deb https://packages.microsoft.com/repos/edge stable main" >> /etc/apt/sources.list.d/microsoft-edge.list \
   && apt-get update -qqy \

NodeFirefox/Dockerfile

@@ -17,15 +17,15 @@ RUN if [ "$(dpkg --print-architecture)" = "amd64" ]; then \
         FIREFOX_DOWNLOAD_URL="https://download.mozilla.org/?product=firefox-nightly-latest-ssl&os=linux64-aarch64&lang=en-US" ; \
     fi \
   && apt-get update -qqy \
-  && apt-get -qqy --no-install-recommends install libavcodec-extra \
-     libgtk-3-dev libdbus-glib-1-dev \
-  && rm -rf /var/lib/apt/lists/* /var/cache/apt/* \
+  && apt-get -qqy --no-install-recommends install libavcodec-extra libgtk-3-dev libdbus-glib-1-dev \
+  && rm -rf /var/lib/apt/lists/* /var/cache/apt/* ${HOME}/firefox \
   && wget --no-verbose -O /tmp/firefox.tar.bz2 $FIREFOX_DOWNLOAD_URL \
-  && rm -rf /opt/firefox \
-  && tar -C /opt -xjf /tmp/firefox.tar.bz2 \
+  && tar -C ${HOME} -xjf /tmp/firefox.tar.bz2 \
   && rm /tmp/firefox.tar.bz2 \
-  && mv /opt/firefox /opt/firefox-$FIREFOX_VERSION \
-  && ln -fs /opt/firefox-$FIREFOX_VERSION/firefox /usr/bin/firefox
+  && mkdir -p ${HOME}/firefox/distribution/extensions \
+  && setfacl -Rm u:${SEL_USER}:rwx ${HOME}/firefox \
+  && setfacl -Rm g:${SEL_GROUP}:rwx ${HOME}/firefox \
+  && ln -fs ${HOME}/firefox/firefox /usr/bin/firefox
 
 #============
 # GeckoDriver
@@ -46,16 +46,19 @@ RUN LATEST_VERSION=$(curl -sk https://api.github.com/repos/mozilla/geckodriver/r
 #============================================
 # Firefox cleanup script and supervisord file
 #============================================
-COPY firefox-cleanup.sh /opt/bin/firefox-cleanup.sh
-COPY firefox-cleanup.conf /etc/supervisor/conf.d/firefox-cleanup.conf
+COPY --chown="${SEL_UID}:${SEL_GID}" firefox-cleanup.sh get_lang_package.sh /opt/bin/
+COPY --chown="${SEL_UID}:${SEL_GID}" firefox-cleanup.conf /etc/supervisor/conf.d/firefox-cleanup.conf
+RUN chmod +x /opt/bin/firefox-cleanup.sh /opt/bin/get_lang_package.sh
 
 USER ${SEL_UID}
 
 #============================================
 # Dumping Browser information for config
 #============================================
-RUN echo "firefox" > /opt/selenium/browser_name
-RUN firefox --version | awk '{print $3}' > /opt/selenium/browser_version
-RUN echo "\"moz:firefoxOptions\": {\"binary\": \"/usr/bin/firefox\"}" > /opt/selenium/browser_binary_location
+RUN echo "firefox" > /opt/selenium/browser_name \
+    && firefox --version | awk '{print $3}' > /opt/selenium/browser_version \
+    && echo "\"moz:firefoxOptions\": {\"binary\": \"/usr/bin/firefox\"}" > /opt/selenium/browser_binary_location \
+    # Download the language pack for Firefox
+    && /opt/bin/get_lang_package.sh
 
 ENV SE_OTEL_SERVICE_NAME="selenium-node-firefox"

NodeFirefox/get_lang_package.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+function on_exit() {
+  local exit_code=$?
+  rm -f /tmp/xpi_files.txt
+  exit $exit_code
+}
+trap on_exit EXIT ERR
+
+# Script is used to download language packs for a specific version of Firefox.
+# It requires the version number as the first argument and the target directory as the second argument.
+
+VERSION=${1:-$(firefox --version | awk '{print $3}')}
+TARGET_DIR="${2:-$(dirname $(readlink -f $(which firefox)))/distribution/extensions}"
+BASE_URL="https://ftp.mozilla.org/pub/firefox/releases/$VERSION/linux-x86_64/xpi/"
+
+# Create target directory if it doesn't exist
+mkdir -p "${TARGET_DIR}"
+
+# Download the list of files
+wget -q -O - "${BASE_URL}" | grep -oP '(?<=href=")[^"]*.xpi' >/tmp/xpi_files.txt
+
+echo "Downloading language packs for Firefox version $VERSION to $TARGET_DIR ..."
+
+# Loop through each file and download it
+while IFS= read -r file; do
+  file=$(basename "${file}")
+  echo "Downloading "${BASE_URL}${file}" ..."
+  curl -sk -o "${TARGET_DIR}/${file}" "${BASE_URL}${file}"
+  target_file="${TARGET_DIR}/langpack-${file%.xpi}@firefox.mozilla.org.xpi"
+  mv "${TARGET_DIR}/${file}" "${target_file}"
+  if [ -f "${target_file}" ]; then
+    echo "Downloaded ${target_file}"
+  fi
+done </tmp/xpi_files.txt
+
+echo "All language packs are downloaded to $TARGET_DIR"

README.md

@@ -67,6 +67,7 @@ Talk to us at https://www.selenium.dev/support/
   * [Automatic browser leftovers cleanup](#automatic-browser-leftovers-cleanup)
   * [Mask sensitive information in console logs](#mask-sensitive-information-in-console-logs)
   * [Secure Connection](#secure-connection)
+  * [Browser language and locale](#browser-language-and-locale)
 * [Building the images](#building-the-images)
 * [Build the images with specific versions](#build-the-images-with-specific-versions)
 * [Upgrade browser version in the images](#upgrade-browser-version-in-the-images)
@@ -1278,6 +1279,36 @@ The self-signed certificate also needs to be trusted by the client (add to syste
 
 Refer to sample: [`docker-compose-v3-full-grid-secure.yml`](docker-compose-v3-full-grid-secure.yml)
 
+## Browser language and locale
+
+Different browsers have different ways to set the language and locale from binding.
+
+### Firefox
+
+Firefox can be configured to use a specific language and locale by setting the profile preference when create WebDriver from binding. In addition, language pack need to be installed as add-on for browser UI language to take effect. For example, to set the browser language and locale to `vi-VN`, you can use the following steps:
+
+Get the latest Firefox language pack for the desired language e.g. https://download.mozilla.org/?product=firefox-langpack-latest-SSL&lang=vi. Then, you can install the language pack as an add-on when creating the RemoteWebDriver instance.
+
+```python
+profile = webdriver.FirefoxProfile()
+profile.set_preference('intl.accept_languages', 'vi-VN,vi')
+profile.set_preference('intl.locale.requested', 'vi-VN,vi')
+options = FirefoxOptions()
+options.profile = profile
+driver = webdriver.Remote(options=options, command_executor="http://selenium-hub:4444/wd/hub")
+webdriver.Firefox.install_addon(driver, "/local/path/to/vi.xpi")
+driver.get('https://google.com')
+```
+
+There is a [script](NodeFirefox/get_lang_package.sh) to get all available language packs for a given Firefox version. You can run the script to get the language packs to your source. For example:
+
+```bash
+FIREFOX_VERSION=$(docker run --rm --entrypoint="" selenium/node-firefox:latest firefox --version | awk '{print $3}') \
+&& ./NodeFirefox/get_lang_package.sh ${FIREFOX_VERSION} /local/path/to/download
+```
+
+Or, you can mount the container directory `/home/seluser/firefox/distribution/extensions` to host directory to access packs were pre-built in the container for using in your test script.
+
 ___
 
 ## Building the images

tests/SeleniumTests/__init__.py

@@ -25,6 +25,7 @@
 TEST_NODE_RELAY = os.environ.get('TEST_NODE_RELAY', 'false')
 TEST_ANDROID_PLATFORM_API = os.environ.get('ANDROID_PLATFORM_API')
 TEST_PLATFORMS = os.environ.get('TEST_PLATFORMS', 'linux/amd64')
+TEST_FIREFOX_INSTALL_LANG_PACKAGE = os.environ.get('TEST_FIREFOX_INSTALL_LANG_PACKAGE', 'false').lower() == 'true'
 
 if SELENIUM_GRID_USERNAME and SELENIUM_GRID_PASSWORD:
     SELENIUM_GRID_HOST = f"{SELENIUM_GRID_USERNAME}:{SELENIUM_GRID_PASSWORD}@{SELENIUM_GRID_HOST}"
@@ -187,6 +188,8 @@ def setUp(self):
             profile = webdriver.FirefoxProfile()
             profile.set_preference("browser.download.manager.showWhenStarting", False)
             profile.set_preference("browser.helperApps.neverAsk.saveToDisk", "*/*")
+            profile.set_preference('intl.accept_languages', 'vi-VN,vi')
+            profile.set_preference('intl.locale.requested', 'vi-VN,vi')
             options = FirefoxOptions()
             options.profile = profile
             options.enable_downloads = SELENIUM_ENABLE_MANAGED_DOWNLOADS
@@ -212,6 +215,20 @@ def test_title_and_maximize_window(self):
         self.driver.maximize_window()
         self.assertTrue(self.driver.title == 'The Internet')
 
+    def test_accept_languages(self):
+        if TEST_FIREFOX_INSTALL_LANG_PACKAGE:
+            addon_id = webdriver.Firefox.install_addon(self.driver, "./target/firefox_lang_packs/[email protected]")
+        self.driver.get('https://gtranslate.io/detect-browser-language')
+        wait = WebDriverWait(self.driver, WEB_DRIVER_WAIT_TIMEOUT)
+        lang_code = wait.until(
+            EC.presence_of_element_located((By.XPATH, '(//*[@class="notranslate"])[1]'))
+        )
+        self.driver.execute_script("arguments[0].scrollIntoView();", lang_code)
+        self.assertTrue(lang_code.text == 'vi-VN', "Language code should be vi-VN")
+        time.sleep(1)
+        self.driver.get('https://google.com')
+        time.sleep(2)
+
 class Autoscaling():
     def run(self, test_classes):
         with concurrent.futures.ThreadPoolExecutor() as executor:

tests/docker-compose-v3-test-standalone.yml

@@ -79,4 +79,5 @@ services:
       - BINDING_VERSION=${BINDING_VERSION}
       - TEST_DELAY_AFTER_TEST=${TEST_DELAY_AFTER_TEST}
       - SELENIUM_ENABLE_MANAGED_DOWNLOADS=${SELENIUM_ENABLE_MANAGED_DOWNLOADS}
+      - TEST_FIREFOX_INSTALL_LANG_PACKAGE=${TEST_FIREFOX_INSTALL_LANG_PACKAGE}
     command: ["/bin/bash", "-c", "./bootstrap.sh ${NODE}"]