Bitcoin Testnet is not working I am new to Bitcoin Development Environment. Trying to setup testnet environment with the help this blog post.

Bitcoin Folder
~/.bitcoin $ ls
bitcoin.conf  chainstate  db.log     peers.dat
blocks        database    debug.log  wallet.dat


bitcoin.conf

telnet=1
server=1
rpcuser=userme
rpcpassword=mypassword
rpctimeout=30
rpcport=8332


Running Bitcoin

~/.bitcoin $ bitcoin-qt
"sni-qt/2440" WARN  16:37:44.104 void StatusNotifierItemFactory::connectToSnw() Invalid interface to SNW_SERVICE
Where are you choosing testnet network?
In bitcoin.conf should it really be telnet=1?
Maybe you meant testnet=1?