Log

This section contains the APIs related to logging.

Console logs

Listen to the console.log events and register callbacks to process the event.

Selenium v4.8

            CompletableFuture<ConsoleLogEntry> future = new CompletableFuture<>();
            logInspector.onConsoleEntry(future::complete);

            driver.get("https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html");
            driver.findElement(By.id("consoleLog")).click();

            ConsoleLogEntry logEntry = future.get(5, TimeUnit.SECONDS);

Selenium v4.15

@pytest.mark.driver_type("bidi")
def test_add_console_log_handler(driver):
    driver.get('https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html')
    log_entries = []

    driver.script.add_console_message_handler(log_entries.append)

    driver.find_element(By.ID, "consoleLog").click()
    WebDriverWait(driver, 5).until(lambda _: log_entries)
    assert log_entries[0].text == "Hello, world!"
    const inspector = await LogInspector(driver)
    await inspector.onConsoleEntry(function (log) {
      logEntry = log
    })

    await driver.get('https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html')
    await driver.findElement({id: 'consoleLog'}).click()

    assert.equal(logEntry.text, 'Hello, world!')
    assert.equal(logEntry.realm, null)
    assert.equal(logEntry.type, 'console')
    assert.equal(logEntry.level, 'info')
    assert.equal(logEntry.method, 'log')
    assert.equal(logEntry.stackTrace, null)
    assert.equal(logEntry.args.length, 1)

JavaScript exceptions

Listen to the JS Exceptions and register callbacks to process the exception details.


            driver.get("https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html");
            driver.findElement(By.id("jsException")).click();

            JavascriptLogEntry logEntry = future.get(5, TimeUnit.SECONDS);

Selenium v4.15

@pytest.mark.driver_type("bidi")
def test_add_js_exception_handler(driver):
    driver.get('https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html')
    log_entries = []

    driver.script.add_javascript_error_handler(log_entries.append)

    driver.find_element(By.ID, "jsException").click()
    WebDriverWait(driver, 5).until(lambda _: log_entries)
    assert log_entries[0].text == "Error: Not working"
    const inspector = await LogInspector(driver)
    await inspector.onJavascriptException(function (log) {
      logEntry = log
    })

    await driver.get('https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html')
    await driver.findElement({id: 'jsException'}).click()

    assert.equal(logEntry.text, 'Error: Not working')
    assert.equal(logEntry.type, 'javascript')
    assert.equal(logEntry.level, 'error')

Listen to JS Logs

Listen to all JS logs at all levels and register callbacks to process the log.

Selenium v4.8


            driver.get("https://www.selenium.dev/selenium/web/bidi/logEntryAdded.html");
            driver.findElement(By.id("jsException")).click();

            JavascriptLogEntry logEntry = future.get(5, TimeUnit.SECONDS);