Add unit tests to support "in-line" code on "function" keyword

[mrutkows]

Need to assure we test for support of in-line code, for example:

function: |  
          function main(params) {
            console.log(params);
            return params || {};
          }

we need to have unit tests in place for multiple langs. (e.g., python, java, swift, and php at the very least)

[mrutkows]

need to assure code "errors out: if typo and exists gracefully with an error message to user