The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

    http://creativecommons.org/publicdomain/zero/1.0/ */

 /**

  * Check that syntax errors are reported correctly.

  */

 function test() {

   let { Parser } = Cu.import("resource:///modules/devtools/Parser.jsm", {});

   let source = "let x + 42;";

   let parser = new Parser();

   let parsed = parser.get(source);

   ok(parsed,

     "An object should be returned even though the source had a syntax error.");

   is(parser.errors.length, 1,

     "There should be one error logged when parsing.");

   is(parser.errors[0].name, "SyntaxError",

     "The correct exception was caught.");

   is(parser.errors[0].message, "missing ; before statement",

     "The correct exception was caught.");

   finish();

 }