add a switch test using different types of strings.
add a switch test using different types of strings.

toshok/echojs,toshok/echojs,toshok/echojs,toshok/echojs,carlosalberto/echo-js,carlosalberto/echo-js,toshok/echojs,carlosalberto/echo-js,toshok/echojs,toshok/echojs,carlosalberto/echo-js,carlosalberto/echo-js,carlosalberto/echo-js,toshok/echojs