Headless Selenium tests can be well run on my machine (yup, I should definitely move in this ideal place where problems doesn't exist).
However, when I launch those tests via Jenkins, none of the page elements are found. I took a screenshot to figure out why, and it shows a blank page.
This is how I instanciate my headless Chrome browser.
ChromeOptions chromeOptions = new ChromeOptions();
chromeOptions.setPageLoadStrategy(PageLoadStrategy.NONE);
chromeOptions.addArguments("--headless");
chromeOptions.addArguments("--window-size=1920x1080");
chromeOptions.addArguments("start-maximised");
chromeOptions.addArguments("enable-automation");
chromeOptions.addArguments("--no-sandbox");
chromeOptions.addArguments("--disable-infobars");
chromeOptions.addArguments("--disable-dev-shm-usage");
chromeOptions.addArguments("--disable-browser-side-navigation");
chromeOptions.addArguments("--disable-gpu");
driver = new ChromeDriver(chromeOptions);
driver.manage().timeouts().pageLoadTimeout(30L, TimeUnit.SECONDS);
driver.manage().timeouts().setScriptTimeout(3L, TimeUnit.SECONDS);
driver.manage().window().maximize();
I have a guess but my coworker says it can't be this: should I install Xvfb on Jenkins server? I mean, is it mandatory? (I must be at least 51% sure before trying this approach ^^)
Thanks in advance.
I tried lots of solutions but it turned out that Jenkins wasn't allowed to access the resources I needed to test. So... I couldn't solve it myself anyway. Sysadmins did.
Related
I use Selenium WebDriver 3.141.59 with ChromeDriver and try to remove browser cache and history during test execution.
I have found several solutions about using chrome://settings/clearBrowserData page in test scripts, but these seems flaky.
In v4.0, there will be a better solution to interact with DevTools, but it isn't yet released.
driver.getDevTools().createSessionIfThereIsNotOne();
driver.getDevTools().send(Network.clearBrowserCookies());
Whenever chrome opens it stores info in a profile folder. The best solution might be to create a custom profile folder every time you start the driver.
ChromeOptions chromeProfile = new ChromeOptions();
chromeProfile.addArguments("user-data-dir=" + chromeProfilePath);
WebDriver driver = new ChromeDriver(chromeProfile);
After starting chromedriver.exe in headless mode following this advice and using just these arguments
options.AddArgument("headless");
options.AddArgument("window-size=1280,960");
The chromedriver opens invisibly. But Selenium's FindElement() command is not finding anything on the headless Chrome page. Instead it throws this exception:
An exception of type 'OpenQA.Selenium.NoSuchElementException' occurred in WebDriver.dll but was not handled in user code
Additional information: no such element: Unable to locate element:
Q1: Has anyone had success running Selenium commands in Chrome's headless mode?
Q2: Have you been able to use FindElement with a chromedriver running in headless mode? If yes, how did you do it?
After reading more, perhaps something along these lines may be necessary? Add this to the Chrome startup options and then maybe connect chromedriver to it?
"remote-debugging-port=9222"
But with that option the IWebDriver and chromedriver does not open.
Background info: to answer, why would you want to do this? The primary reason was for tests run as a part of CI. These are tests that run on a VM and may not support 1080p monitors. If we ran it in headless mode and set the resolution that way we could.
Add below lines of code in your main class:
ChromeOptions options = new ChromeOptions();
options.setHeadless(true);
options.addArguments("--window-size=1920,1080");
options.addArguments("--disable-gpu");
options.addArguments("--disable-extensions"); options.setExperimentalOption("useAutomationExtension", false); options.addArguments("--proxy-server='direct://'");
options.addArguments("--proxy-bypass-list=*");
options.addArguments("--start-maximized");
options.addArguments("--headless");
WebDriver driver = new ChromeDriver(options);
I've been using chrome driver (with selenium webdriver), so far it never caused any issue, now for some requirement i want to run test cases in background. How can I do this?
Currently Chrome 59 supports headless mode.
You just need to use those chromeOptions to use headless chrome in selenium.
chromeOptions.addArguments("--headless");
chromeOptions.addArguments("--disable-gpu");
You can refer below link for more details:
https://www.automation99.com/2017/07/how-to-use-chrome-headless-using.html
According to this post Any way to start Google Chrome in headless mode?, a new flag --headless is available in Chromium but Selenium is still to catch up as far as my limited googling skills tell me.
In the mean time you can explore HTMLUnitDriver for headless testing.
WebDriver driver = new HtmlUnitDriver((BrowserVersion.CHROME), true);
how to set Firefox version in web-driver?
I just want to user different version of Firefox.
like different version 19, 20 , 21....
please provide a generic solution which help for other browser also.
You have to install all the versions on your system. Then you can use the System property webdriver.firefox.bin to define the path for Firefox. Note than since the path is set through a System property, you will not be able to run two different Firefox in the same Java process.
This solution is specific to Firefox. There is no generic solution. You have to configure every WebDriver yourself.
More information about the configuration of Firefox Web Drvier.
Finally i have found solution to run with different browser version
System.setProperty("webdriver.firefox.bin", "/Applications/Firefox-2.app/Contents/MacOS/firefox-bin");
WebDriver driver = new FirefoxDriver();
driver.get(baseUrl);
System.out.println(driver.getTitle());
driver.close();
driver.quit();
I have found how to start a different FireFox browser (actually WaterFox) in Python Selenium, replacing
driver = webdriver.Firefox()
with
driver = webdriver.Firefox(firefox_binary = "/path/to/my/waterfox")
(Ubuntu 20.04, Python 3.95)
How do I disable the loading of flash objects when using Selenium Remote WebDriver.
It will be helpful if I get a solution for the normal webdriver also.
Since in most cases the Flash object is loaded by a JavaScript
I have tried disabling the javascript on the webdriver and remote webdriver both, but it does not work.
I tried to to disable the JavaScript by:
WebDriver driver = new FirefoxDriver();
((DesiredCapabilities) driver.getCapabilities()).setJavascriptEnabled(false);
I also tried:
DesiredCapabilities caps = new DesiredCapabilities();
caps.setJavascriptEnabled(false);
WebDriver driver = new FireFoxDriver(caps);
For Remote WebDriver i tried:
final DesiredCapabilities firefoxCapability = DesiredCapabilities.firefox();
firefoxCapability.setJavascriptEnabled(false);
new RemoteWebDriver(new URL("http://" + windowsIP + ":4444/wd/hub"), firefoxCapability);
After execution of the above statement the remote server displays
Executing: [new session: <platform=ANY, javascriptEnabled=false, browserName=firefox, version=>] at URL:/session>
but still all the Javascript is executing on the pages the driver loads and the Flash is also loading.
Please help me :
1. how can stop the flash from loading.
2. need it on remote driver as I need to test the pages on IE, Firefox, Chrome. Hence loading the forefox profile will not work
Thank you for the help.
I used this code on Linux mint and it works:
FirefoxProfile profile= new FirefoxProfile();
profile.setPreference("plugin.state.flash", 0);
FirefoxDriver driver = new FirefoxDriver(profile);
though it's already answered question but on different forum... so i will consolidate for you...
I'm not sure if flash objects are loaded by javascript....but if disabling javascript is problem then...
Never disable Javascript for Firefox driver, in case if you want to use it being disabled try with HTMLUNITDRIVER which specially meant for non-javascript pages.
Reason being important parts of firefox driver is implemented in javascript and disabling would have serious concerns.
HtmlUnitDriver on the other hand is fastest and best way for automation tests (splly for pages with no JS)
please check this group discussion
https://groups.google.com/forum/?fromgroups=#!topic/webdriver/daLOzCiU_h4%5B1-25%5D
I had the same problem and needed it to be solved for Chrome. This is how I got it to work:
ChromeOptions options = new ChromeOptions();
options.addArguments("--disable-bundled-ppapi-flash");
WebDriver webDriver = new org.openqa.selenium.chrome.ChromeDriver(options);