Issues Running Selenium Scripts Remotely

In real time we hardly have a simple setup like running on the same box which acts as a server and client :( So we might have to run the scripts remotely almost all the time...Well there might be issues while doing so...Here are some!

Can't launch the browser at all:

Check the host name you are using in your code first!
There is a possibility that the DNS isn't able to map the hostname with the IP - so try running your tests specifying the IP instead of the hostname
Check the path you provided to the executable of the browser - verify its found on the same path on your remote location
Now the final check is to verify you can run the browser version on the RC version for ex: you can't run FF7 on RC1 :)

Browser Opens but tests aren't running

This happens because the RC isn't able to talk to your browser - though it initiates the browser but can't talk to it anymore
Solution: Upgrade your RC :)

Running on a Headless Box

Selenium can't run upright on headless boxes - Still looking into how to make it work...
Leave a comment if you know how to do that!

Comments

wget error–“zsh: parse error near &”

There is no doubt that I prefer wget way over any other type of downloads… Syntax: wget <DOWNLOAD_URL> If you get this error “ zsh: parse error near & ” then its probably because your download URL has a “&” so you should try giving your DOWNLOAD_URL in double quotes wget “<DOWNLOAD_URL>” If you are trying to download from a site which needs you to give your credentials then you can try giving it this way wget --http-user=<UserName> --http-password=<Password> “<DOWNLOAD_URL>” Hope this helps

Apache Commons StringUtils.isEmpty() vs Java String.isEmpty()

You might want to test for if a String is empty many a times. Before we jump onto the numerous solutions available let us take a look at how we define “Empty String” The difference in the two methods given by Apache and Java are dependent on how we define an empty string. Java String.isEmpty returns a boolean true if the string’s length is zero. If the string has null it throws NullPointerException Apache StringUtils.isEmpty returns a boolean true if the string is either null or has length is zero Thus its purely dependent on how you are defining “empty string” in your program which will decide which function to use…BTW if you want to skip using Apache Commons funciton and would want to stick to java then you can have your own function like this: public static boolean isEmptyOrNull(String strStringToTest) { return strStringToTest == null || strStringToTest.trim().isEmpty(); }

How to Unpack a tar file on Windows?

On Windows: You can download a simple command line tool to do this. You can download the tool from here Usage can be found on the website but pasting it here too for convenience: C:\>TarTool.exe Usage : C:\>TarTool.exe sourceFile destinationDirectory C:\>TarTool.exe D:\sample.tar.gz ./ C:\>TarTool.exe sample.tgz temp C:\>TarTool.exe -x sample.tar temp TarTool 2.0 Beta supports bzip2 decompression for files with extensions like tar.bz2 and .bz2 . TarTool -xj sample.tar.bz2 temp or TarTool -j sample.bz2 Download TarTool 2.0 Beta from here Unpack a .txz file on Windows Use the 7zip tool to unpack a .txz file on windows On Linux: You can use the bzip2 and tar combined to do this… for ex: bzip2 –cd <tar.bz_fileName> | tar –xvf - This will unpack the contents of the tar.bz file Happy Un-Tar-ing

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