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Firefox: logs().get( "browser" ) doesn't show console errors? #1161

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axelssonHakan opened this issue Oct 15, 2015 · 14 comments
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Firefox: logs().get( "browser" ) doesn't show console errors? #1161

axelssonHakan opened this issue Oct 15, 2015 · 14 comments
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D-firefox I-enhancement

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@axelssonHakan
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I'm trying to save the console logs after each test but having some problems with Firefox.
With a test like:

describe("protractor/webdriver", function() {
    it("should be able to get browser logs", function() {
        browser.get("https://angularjs.org");

        browser.executeScript("console.log('Nothing to see here - move along.')");
        browser.executeScript("console.warn('This is your first warning!')");
        browser.executeScript("console.error('This is serious!!!')");

        browser.driver.manage().logs().get( "browser" ).then(function( logsEntries ) {
            logsEntries.forEach( (item) => {
                console.log( "LOG LEVEL:", item.level.name, item.message );
            });
        });
    });
});

For Chrome I get the result nicely:

[chrome #1] LOG LEVEL: WARNING console-api 240:41 This is your first warning!
[chrome #1] LOG LEVEL: SEVERE console-api 240:41 This is serious!!!

But Firefox only returns "Internal" warnings (CSS parse):

[firefox #2] LOG LEVEL: WARNING Unknown property 'zoom'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Unknown property 'user-select'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Unknown property 'zoom'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Error in parsing value for 'background-image'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Error in parsing value for 'background-image'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Expected media feature name but found '-webkit-min-device-pixel-ratio'.
@jleyba
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jleyba commented Oct 15, 2015

The FirefoxDriver is not configured to capture JS console output.

@Unnumbered
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This issue can be resolved partially by installation of JSErrorCollector addon, but as far as I know it can catch only errors (not warnings).

I hope to see this functional in future version of Selenium. 😃

@axelssonHakan
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Sounds interesting :)
Where can I find this add-on?

@Unnumbered
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@axelssonHakan first search result on Google and GitHub.
https://github.com/mguillem/JSErrorCollector

@svetlin-mladenov
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I am experiencing the same issue. My environment is Ubuntu 14.04 LTS, Firefox 42, Selenium Version 2.48.0.

Here is my test html page:

<!DOCTYPE HTML>
<html>
<head>
        <script> console.log('console log'); </script>
</head>
<body></body>
</html>

and my test python script

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
import time

d = DesiredCapabilities.FIREFOX
d['loggingPrefs'] = { 'browser':'ALL' }
driver = webdriver.Firefox(capabilities=d)

# chrome
# d = DesiredCapabilities.CHROME
# d['loggingPrefs'] = { 'browser':'ALL' }
# driver = webdriver.Chrome(desired_capabilities=d)

driver.get('http://localhost:8000/consolelog.html')
time.sleep(2) # time for page to load
logs = driver.get_log('browser')
messages = map(lambda l: l['message'], logs)
has_console_logs = any(map(lambda m: m.find('console log') >= 0, messages))
print('Success' if has_console_logs else 'Failure')
driver.quit()

When the chrome driver is used the console log message is found in the list of browser messages (has_console_log is True). When Firefox driver is used driver.get_log('browser') returns a lot of stuff mostly browser debugging info. However the console log message is not found.

@dcoraboeuf
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Same issue in my case, with the same versions. Still looking for a solution, even a workaround, since having the console after the tests have run is very precious for analysis of failures. I'm using Firefox because I have to support different OS and this was the easiest to support.

@vitalis vitalis mentioned this issue Mar 8, 2016
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@birdsarah birdsarah mentioned this issue May 11, 2016
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@checkopser checkopser mentioned this issue May 15, 2016
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@shaharmor
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Any update on this?

@malafeev01
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Is there any update regarding to this issue?

@sundeep-gupta
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I am having the same issue with selenium 2.53.1 and firefox 45.3ESR

@nickrnet
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+1 for this.

@iszlailorand
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can somehow outpass this?... any chance with using geckodriver?

@rosskevin rosskevin mentioned this issue Apr 4, 2017
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@kestasjas
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Same problem with GeckoDriver 0.16.1, FF-53.0.3, Selenium 3.4.0
WebDriver.Manage().Logs.GetLog(LogType.Browser) Exception:
System.NullReferenceException: Object reference not set to an instance of an object.
at OpenQA.Selenium.Remote.HttpCommandExecutor.Execute(Command commandToExecute)
at OpenQA.Selenium.Remote.DriverServiceCommandExecutor.Execute(Command commandToExecute)
at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
at OpenQA.Selenium.Remote.RemoteLogs.GetLog(String logKind)

@barancev
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@tttower Geckodriver does not support logging API yet, follow mozilla/geckodriver#284 to track status of this feature.

@thomas-lee thomas-lee mentioned this issue Sep 10, 2017
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@cliffmeyers cliffmeyers mentioned this issue Sep 21, 2017
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7 tasks
@shepmaster shepmaster mentioned this issue Nov 27, 2017
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@xgitxhubx xgitxhubx mentioned this issue Dec 15, 2017
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@conorsch conorsch mentioned this issue Apr 19, 2018
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@barancev
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Development of XPI-based Firefox driver has been discontinued and this issue will never be fixed in it.

For the new geckodriver-based implementation follow mozilla/geckodriver#284

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