Tests that command-line API methods behave similarly to native code by returning '[WebInspector console function]' via toString(). $ function $() { [Command Line API] } $$ function $$() { [Command Line API] } $x function $x() { [Command Line API] } dir function dir() { [Command Line API] } dirxml function dirxml() { [Command Line API] } keys function keys() { [Command Line API] } values function values() { [Command Line API] } profile function profile() { [Command Line API] } profileEnd function profileEnd() { [Command Line API] } monitorEvents function monitorEvents() { [Command Line API] } unmonitorEvents function unmonitorEvents() { [Command Line API] } inspect function inspect() { [Command Line API] } copy function copy() { [Command Line API] } clear function clear() { [Command Line API] } getEventListeners function getEventListeners() { [Command Line API] }