How to get Javascript console message

[lorenoo...@gmail.com]

Hi Andrei,

did you ever had to get javascript console messages to debug some issue?

I'm trying to log some console.log() messages produced by my JS code with the following code:

private void printLogs( String prefix ) {

Set<String> logTypes = WebDriverRunner.getWebDriver().manage().logs().getAvailableLogTypes();

for( String logType : logTypes ) {

LogEntries logs = WebDriverRunner.getWebDriver().manage().logs().get( logType );

for( LogEntry log : logs.getAll() ) {

System.out.println( prefix + ": " + log.getLevel() + " [" + new Date( log.getTimestamp() ) + "] " + log.getMessage() );

}

}

}

However, what this code prints is more like internal browser's messages, so that my console.log() messages are not returned.

Did you ever had a need like this?

Loreno

PS: I'm not sure if this is a selenide or selenium question. I'm posting here in a first moment because the logs returned by webdriver can be related to the way the firefox driver is being created by selenide (according to this answer in SO: http://stackoverflow.com/questions/18261338/get-chromes-console-log/18283831#18283831)...

[Andrei Solntsev]

Hi Loreno!

I would also want to get browser logs. I have even created a special method Selenide.getWebDriverLogs():

http://selenide.org/javadoc/2.14/com/codeborne/selenide/Selenide.html#getWebDriverLogs(java.lang.String)

The problem is, that this method doesn't return required info. It seems to be a problem of concrete webdriver implementations. 

I can suggest 2 options:

• Use method getJavascriptErrors() - http://selenide.org/javadoc/2.14/com/codeborne/selenide/Selenide.html#getJavascriptErrors()
  
  It does not return all browser logs, only javascript errors. And it doesn't work properly in all browsers. :(
  
  
• Override object "console" in your tests:
  executeJavascript("window.console = {log: function(msg) { ..... }}");
  
  This way you can store all console.log messages to a list and access this list from tests.

Andrei Solntsev

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[lorenoo...@gmail.com]

Thanks Andrei.

What I did in the mean time since my email was something close to your second hint. However, I wrote an utility for storing log messages in the local storage. I preferred this approach over storing in memory because there are certain actions in my app that redirect the user between different pages (I mean, pages with refresh). Using the local storage I can preserve messages even across page refreshes.

Once the data is stored in local storage, I can get them in my test with executeJavaScript( "return localStorage.getItem( 'logs' )" ).

Loreno