gecko/js/tests/js1_7/geniter/regress-366941.js

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var gTestfile = 'regress-366941.js';

//-----------------------------------------------------------------------------
var BUGNUMBER = 366941;
var summary = 'Destructuring enumerations, iterations';
var actual = '';
var expect = '';


//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------

function test()
{
  enterFunc ('test');
  printBugNumber(BUGNUMBER);
  printStatus (summary);

  var list1 = [[1,2],[3,4],[5,6]];
  var list2 = [[1,2,3],[4,5,6],[7,8,9]];

  expect = '1,2;3,4;5,6;';
  actual = '';

  for each (var [foo, bar] in list1) {
    actual += foo + "," + bar + ";";
  }

  reportCompare(expect, actual, summary + ': 1');

  expect = '1,2,3;4,5,6;7,8,9;';
  actual = '';
  for each (var [foo, bar, baz] in list2) {
    actual += foo + "," + bar + "," + baz + ";";
  }

  reportCompare(expect, actual, summary + ': 2');

  function gen(list) {
    for each (var test in list) {
      yield test;
    }
  }

  var iter1 = gen(list1);

  expect = '1,2;3,4;5,6;';
  actual = '';

  for (var [foo, bar] in iter1) {
    actual += foo + "," + bar + ";";
  }

  reportCompare(expect, actual, summary + ': 3');

  // syntax error in js17
  var iter2 = gen(list2);
  expect = /SyntaxError: (invalid for.in left-hand side|Left hand side of for..in loop must be an array of length 2 to accept key.value pair.)/;
  actual = '';

  try
  {
    eval('for (var [foo, bar, baz] in iter2) {' +
         'actual += foo + "," + bar + "," + baz + ";";' + 
         '}');
    actual = 'No Error';
  }
  catch(ex)
  {
    actual = ex + '';
  }
 
  reportMatch(expect, actual, summary + ': 4');

  exitFunc ('test');
}