Tests that command line api works. String($0) '[object HTMLParagraphElement]' $3 undefined String(keys([3,4])) '0,1' String(values([3,4])) '3,4' String($('#foo')) '[object HTMLParagraphElement]' String($('#foo', document.body)) '[object HTMLParagraphElement]' String($('#foo', 'non-node')) '[object HTMLParagraphElement]' String($('#foo', $('#bar'))) 'null' String($$('p')) '[object HTMLParagraphElement],[object HTMLParagraphElement]' String($$('p', document.body)) '[object HTMLParagraphElement],[object HTMLParagraphElement]' String($('foo')) 'null' console.assert(keys(window).indexOf('__commandLineAPI') === -1) undefined queryObjects(Foo) undefined Array(1)