Chrome in docker cannot transform large xml

[dr29bart]

docker images: aerokube/selenoid:1.9.0 selenoid/vnc_chrome:72.0

config:

{
    "chrome": {
        "default": "72.0",
        "versions": {
            "72.0": {
                "image": "selenoid/vnc_chrome:72.0",
                "port": "4444",
                "path": "/",
                "env": [
                    "ENABLE_WINDOW_MANAGER=true"
                ],
                "tmpfs": {"/tmp": "size=1024m", "/var": "size=512m"},
                "shmSize" : 968435456
            }
        }
    }
}

import org.openqa.selenium.Alert;
import org.openqa.selenium.By;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

import java.net.MalformedURLException;
import java.net.URL;

public class T {

    private static RemoteWebDriver iniDriver() throws MalformedURLException {
        ChromeOptions capabilities = new ChromeOptions();
        capabilities.setCapability("screenResolution", "1920x1080");
        capabilities.setCapability("enableVNC", true);
        return new RemoteWebDriver(new URL("http://selenoidhost.com:4444/wd/hub"), capabilities);
    }

    public static void main(String[] args) throws MalformedURLException {
        RemoteWebDriver remoteWebDriver = iniDriver();
        try {
            remoteWebDriver.get("https://dr29bart.github.io/");
            remoteWebDriver.findElement(By.cssSelector("input")).click();
            Alert alert = new WebDriverWait(remoteWebDriver, 20)
                    .until(ExpectedConditions.alertIsPresent());
            System.out.println(alert.getText());
            alert.dismiss();
        } finally {
            remoteWebDriver.quit();
        }
    }
}

Actual console output: TypeError: Cannot read property 'firstChild' of null

Expected output: [object Text]

The same code works fine with local chrome driver instance. chrome_container.log selenoid.log

[BorisOsipov]

@dr29bart It will be nice if you describe\add stacktrace what happened when you ran this test against selenoid.

[dr29bart]

There is only one issue, which is a failure of js snippet in dockerized Chrome :

var p = new XSLTProcessor;
p.importStylesheet(xsl);
var c = p.transformToFragment(xml, document)

transformToFragment returns null if xml is very large.

I was not able to reproduce this issue on Mac/Win 10/(Ubuntu in Virtual VM) Also tuning tmpfs or shmSize parameters didn't allow me to work around the issue.

[vania-pooh]

@dr29bart what is XSLTProcessor (which library provides it)?

[dr29bart]

I think it is Blink implementation of the WEB API: XSLTProcessor.

Unfortunately, I cannot debug it, because it happens only on docker container.

[vania-pooh]

@dr29bart ah ok, an internal JS API.

[github-actions[bot]]

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