I am using htmlunit 2.35.0 version to run the html in headless mode. It is working fine with html containing SVG. Now, I am using a custom JavaScript framework called geotoolkit which renders canvas images. I am facing issue when I try to run the html with canvas in headless mode using htmlunit. Please find the below code and error logs. Can anyone please let me know how to fix the issue ? I have also raised the issue on stackoverflow. Here is the link
https://stackoverflow.com/questions/60372112/how-to-use-htmlunit-to-run-html-containing-canvas-in-headless-mode
import java.io.File;
import java.nio.file.Paths;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
String path = Paths.get("Input/Editor").toAbsolutePath()+File.separator+"canvas.html";
WebClient webClient = new WebClient();
File file = new File(path);
HtmlPage page = webClient.getPage(file.toURI().toURL().toString());
webClient.getOptions().setJavaScriptEnabled(true);
webClient.waitForBackgroundJavaScript(10000);
System.out.println(page.asXml());
webClient.close();
Feb 24, 2020 11:22:29 AM com.gargoylesoftware.htmlunit.javascript.host.canvas.CanvasRenderingContext2D createImageData
INFO: CanvasRenderingContext2D.createImageData() not yet implemented
Feb 24, 2020 11:22:29 AM com.gargoylesoftware.htmlunit.javascript.DefaultJavaScriptErrorListener scriptException
SEVERE: Error during JavaScript execution
======= EXCEPTION START ========
EcmaError: lineNumber=[1426] column=[0] lineSource=[null] name=[TypeError] sourceName=[file:/D:/Playground/HeadlessTest/Input/BHAEditor/geotoolkit/geotoolkit.adv.js] message=[TypeError: Cannot read property "width" from undefined (file:/D:/Playground/HeadlessTest/Input/BHAEditor/geotoolkit/geotoolkit.adv.js#1426)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot read property "width" from undefined (file:/D:/Playground/HeadlessTest/Input/BHAEditor/geotoolkit/geotoolkit.adv.js#1426)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:885)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:617)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:534)
I am using htmlunit 2.35.0 version to run the html in headless mode. It is working fine with html containing SVG. Now, I am using a custom JavaScript framework called geotoolkit which renders canvas images. I am facing issue when I try to run the html with canvas in headless mode using htmlunit. Please find the below code and error logs. Can anyone please let me know how to fix the issue ? I have also raised the issue on stackoverflow. Here is the link
https://stackoverflow.com/questions/60372112/how-to-use-htmlunit-to-run-html-containing-canvas-in-headless-mode