I am using following nuget packages in my solution
Selenium.WebDriver - v3.141.0
Selenium.WebDriver.ChromeDriver - v79.0.3945.3600
using following code I am creating a Chrome driver instance
ChromeOptions options = new ChromeOptions();
//Get Performance Logs from Network tab
ChromePerformanceLoggingPreferences perfLogPrefs = new ChromePerformanceLoggingPreferences();
options.PerformanceLoggingPreferences = perfLogPrefs;
options.SetLoggingPreference("performance", LogLevel.All);
(or)
ChromePerformanceLoggingPreferences perfLogPrefs = new
ChromePerformanceLoggingPreferences();
perfLogPrefs.AddTracingCategories(new string[] { "devtools.timeline" });
options.PerformanceLoggingPreferences = perfLogPrefs;
options.SetLoggingPreference("goog:loggingPrefs", LogLevel.All);
options.AddAdditionalCapability(CapabilityType.EnableProfiling, true, true);
and combining with this
options.AddUserProfilePreference("intl.accept_languages", "en-US");
options.AddUserProfilePreference("disable-popup-blocking", "true");
options.AddArgument("test-type");
options.AddArgument("--disable-gpu");
options.AddArgument("no-sandbox");
options.AddArgument("start-maximized");
options.LeaveBrowserRunning = true;
IWebDriver driver = new ChromeDriver(options);
but while creating Chrome driver instance, I am getting following error message
invalid argument: entry 0 of 'firstMatch' is invalid
from invalid argument: perfLoggingPrefs specified, but performance logging was not enabled
May I know what changes do I need to make please to get the performance logs with latest version of Chrome and Selenium driver
I am able to retrieve Performance Logs using the below code when I was using lower versions of Chrome driver (2.35.0)
var logs = driver.Manage().Logs.GetLog("performance");
for (int i = 0; i < logs.Count; i++)
{
Console.WriteLine(logs[i].Message);
}
With Selenium WebDriver (v4.0.0-alpha04) and Selenium.Chrome.WebDriver (v79.0.0) and using the following code, I am able to retrieve the performance logs.
ChromeOptions options = new ChromeOptions();
//Following Logging preference helps in enabling the performance logs
options.SetLoggingPreference("performance", LogLevel.All);
//Based on your need you can change the following options
options.AddUserProfilePreference("intl.accept_languages", "en-US");
options.AddUserProfilePreference("disable-popup-blocking", "true");
options.AddArgument("test-type");
options.AddArgument("--disable-gpu");
options.AddArgument("no-sandbox");
options.AddArgument("start-maximized");
options.LeaveBrowserRunning = true;
//Creating Chrome driver instance
IWebDriver driver = new ChromeDriver(options);
//Extracting the performance logs
var logs = driver.Manage().Logs.GetLog("performance");
for (int i = 0; i < logs.Count; i++)
{
Console.WriteLine(logs[i].Message);
}
Hope this helps.
All these days, I was using the following two lines with latest versions of Selenium WebDriver and Chrome Driver and couldn't figure out what the issue was and now with the latest versions, the following two lines of code is not required.
var perfLogPrefs = new ChromePerformanceLoggingPreferences();
options.PerformanceLoggingPreferences = perfLogPrefs;
Related
ChromeOptions options = new ChromeOptions();
var chromeDriverService = ChromeDriverService.CreateDefaultService();
chromeDriverService.HideCommandPromptWindow = true;
chromeDriverService.SuppressInitialDiagnosticInformation = true;
options.AddArgument("--headless");
string downloadPath = System.Environment.GetEnvironmentVariable("USERPROFILE") + "\\Downloads";
options.AddUserProfilePreference("download.default_directory", downloadPath);
options.AddUserProfilePreference("profile.default_content_setting_values.automatic_downloads", 1);
options.AddArgument("--window-size=1920,1080");
For some reason I cannot download files in chrome when running headless in Selenium -
When not running in headless mode there is no issue downloading files.
Selenium Webdriver Chromedriver V110.0.5
According to Selenium dev page: https://www.selenium.dev/blog/2023/headless-is-going-away/
you need to user "--headless=new" from now.
However, I'm still struggling with downloading files, even using this new attribute
My use case was a bit different. However, the below code gave me the intended results.
Refer to the below code :
ChromeOptions options = new ChromeOptions();
options.AddUserProfilePreference("download.default_directory", #"C:\Downloads");
options.AddUserProfilePreference("download.prompt_for_download", false);
ChromeDriver driver = new ChromeDriver(options);
driver.Navigate().GoToUrl("https://example.com/download-file");
IWebElement downloadLink = driver.FindElement(By.Id("download-link"));
downloadLink.Click();
System.Threading.Thread.Sleep(4000); // wait for awhile for 4 seconds
driver.Close();
i am using selenium C#, i am trying to disable the pop up of "crashed" chrome:
i tried to set the profile preferences, but its seems that the it ain't changing at all, the code:
ChromeOptions options = new ChromeOptions();
options.AddUserProfilePreference("exit_type", "Normal");
options.AddUserProfilePreference("exited_cleanly", "true");
IWebDriver driver = new ChromeDriver(options);
i tried to change the value of exit type to none & None, but without any change at the preferences document.
I'm using C# and I've noticed that chrome driver can be closed propery only when we use Close() method followed by Quit() in finally block. No special options required. I think in java it's the same way. This will help to rid of "Restore pages" while launching chrome with the driver
ChromeOptions options = new ChromeOptions();
options.AddArgument(Configure.chromeProfileDir);
options.AddArgument(Configure.chromePath);
ChromeDriver d = null;
try
{
d = new ChromeDriver(options);
d.Navigate().GoToUrl("https://google.com");
// Your operations...
}
catch(Exception e)
{
// Handle your exceptions...
}
finally
{
try
{
d.Close();
d.Quit();
}
catch(Exception e)
{
}
}
I tested the Answer given by #Icy, and it worked for me. what I used was :
prefs = {'exit_type': 'Normal'}
option.add_experimental_option("prefs", {'profile': prefs})
and it is spoken of by https://superuser.com/a/1343331, only issue is with the method listed there, you will need to edit the file manually every time, so this works way better, tested in may 2021. Just couldn't upvote the answer as I have no reputation yet, and it is the last.
Use below code to handle this pop up:
ChromeOptions options = new ChromeOptions();
options.AddArguments("--disable-extensions");
options.AddArguments("--disable-application-cache");
driver = new ChromeDriver(options);
i tried this code in java, it solved my problem :))
ChromeOptions options = new ChromeOptions();
options.addArguments("user-data-dir="+profilepath);
options.addArguments("--no-startup-window");
// argument "--no-startup-window" make chrome is failed to start -> selenium will quit chrome normaly
//-> start chrome again, it won't show restore page
try {
driver = new ChromeDriver(options);
}catch(Exception ex){
}
options = new ChromeOptions();
options.addArguments("user-data-dir="+profilepath);
driver = new ChromeDriver(options);
Try this code:
prefs = {'exit_type': 'Normal'}
chrome_options.add_experimental_option("prefs", {'profile': prefs})
So I am creating a bot with chrome headless browser and it works just fine. I had quite a lot warnings so I disabled them after reasearch with those commands:
ChromeOptions option = new ChromeOptions();
option.AddArgument("--headless");
option.AddArgument("--silent");
option.AddArgument("--disable-gpu");
option.AddArgument("--log-level=3");
ChromeDriverService service = ChromeDriverService.CreateDefaultService();
service.SuppressInitialDiagnosticInformation = true;
_driver = new ChromeDriver(service, option);
But there is one more message showing when programs starts:
DevTools listening on ws://127.0.0.1:12015/devtools/browser/6b70a3c5-56c8-4c90-952a-d0e0ef254ddf
Any idea how to disable it from showing?
If you are trying to fix Selenium with Python on Windows, type:
from selenium.webdriver.chrome.options import Options
options = Options()
options.add_argument('headless')
options.add_experimental_option('excludeSwitches', ['enable-logging'])
browser = webdriver.Chrome(options=options)
with the experimental_option line being the special sauce.
That did the trick
var service = ChromeDriverService.CreateDefaultService();
service.HideCommandPromptWindow = true;
Driver = new ChromeDriver(service, options);
Add following two options .
option.AddArgument("--disable-extensions");
option.AddArgument("test-type");
I tried to open modified FireFox browser using Selenium WebDriver.
(This Firefox-based browser as same as original Firefox, just with additional functionality.)
This Browser opens and then I got Error:
["OpenQA.Selenium.WebDriverException" in WebDriver.dll]
TypeError: Given browserName [object String] "firefox", but my name is [object String] "anotherbrowser"
My code[C#]:
var path = new FirefoxBinary(#"C:\FireFox_BasedBrowser\anotherbrowser.exe");
IWebDriver driver = new FirefoxDriver(path, null); //here's error
After searching I found this advice on Java:
String bname = "Browser name";
FirefoxOptions options = new FirefoxOptions();
options.setBinary("Path to browser binary");
options.setCapability("browserName", bname);
options.setCapability("marionette", false);
driver = new FirefoxDriver(options);
I tried to rewrite it into C#:
DesiredCapabilities cap = DesiredCapabilities.Firefox();
cap.SetCapability("browserName", "anotherbrowser");
cap.SetCapability("firefox_binary", #"C:\FireFox_BasedBrowser\anotherbrowser.exe");
IWebDriver driver = new FirefoxDriver(cap); //here's error
But I also got an error:
["System.ArgumentException" in WebDriver.dll] There is already an option for the browserName capability. Please use
the instead.
Please, help me, I can't find any solutions.
P.s. I can't use original Firefox browser, because it doesn't have same advantages as this modified Firefox.
Use FirefoxDriverService.CreateDefaultService(...) to define another path for Firefox:
var service = FirefoxDriverService.CreateDefaultService(#"C:\drivers", "geckodriver.exe");
service.FirefoxBinaryPath = #"C:\Program Files (x86)\Mozilla Firefox\firefox.exe";
var driver = new FirefoxDriver(service);
In a project, we have exact guidelines, which Selenium & FireFox Versions to run for UI Tests:
- FireFox: 33.1 (some have 33.1.1, which works also)
- NuGet Selenium.WebDriver 3.3.0
- NuGet Selenium.Support 3.3.0
The FireFoxWebDriver is initialized like this:
var firefoxDirectory = #"C:\Program Files (x86)\Mozilla Firefox\";
var driverExecutableFileName = "firefox.exe";
var profileManager = new FirefoxProfileManager();
var profile = profileManager.GetProfile("default");
profile.EnableNativeEvents = false;
profile.SetPreference("intl.accept_languages", "en-US");
profile.SetPreference("browser.download.folderList", 2);
profile.SetPreference("browser.download.dir", "C:\\Temp");
profile.SetPreference("browser.helperApps.neverAsk.saveToDisk", "text/csv,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,application/octet-stream");
var defaultPath = $"{firefoxDirectory}{driverExecutableFileName}";
var options = new FirefoxOptions
{
Profile = profile,
UseLegacyImplementation = true
};
var service = FirefoxDriverService.CreateDefaultService(firefoxDirectory, driverExecutableFileName);
if (File.Exists(defaultPath))
{
options.BrowserExecutableLocation = defaultPath;
}
var fireFoxDriver = new FirefoxDriver(service, options, TimeSpan.FromSeconds(30));
return fireFoxDriver;
My problem: It works on every other developer machine, but on mine, the following happens:
As soon as
var fireFoxDriver = new FirefoxDriver(service, options, TimeSpan.FromSeconds(30));
Is hit, an empty FireFox window opens, but then it stops until the Timeout is reached. The length of the timeout doesn't matter, Selenium just doesn't seem to connect.
I uninstalled FireFox, the NuGet cache etc., imported the default-profile from other developers and checked all topics regarding that problem, but most topics are related to version incompatibility, which can't be the problem, since other devs have the same environment.
Are there other known issues or possibilities, what on my machine could influence this behavior?
add this two lines to configuration
profile.SetPreference("browser.startup.homepage_override.mstone", "ignore");
profile.SetPreference("startup.homepage_welcome_url.additional", "about:blank");