Getting console.log output from Firefox with Selenium.

We can get console.log output from Firefox with Selenium. This is done with the setProperty method.FirefoxDriver.SystemProperty.BROWSER_LOGFILE and the path of the file in which the logs are to be captured are passed as parameters to that method.

Syntax

System.setProperty(FirefoxDriver.SystemProperty.BROWSER_LOGFILE, "FFLogs.txt");

After refreshing the project folder, we shall get the FFLogs.txt file where the logs shall be captured.

Example

Code Implementation.

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.logging.LogType;
public class FirefoxLogs{
   public static void main(String[] args) {
      System.setProperty("webdriver.gecko.driver", "C:\Users\ghs6kor\Desktop\Java\geckodriver.exe");
      // set the System Property to BROWSER_LOGFILE and path of log file
      System.setProperty(FirefoxDriver.SystemProperty.BROWSER_LOGFILE, "FFLogs.txt");
      WebDriver driver = new FirefoxDriver();
      driver.get("https://www.tutorialspoint.com/tutor_connect/index.php");
      driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
      // identify element
      driver.findElement(By.id("txtSearchText")).sendKeys("Selenium");
      driver.quit();
   }
}

Output

A log file with the name FFLogs.txt gets created within the project folder.