michael@0: // for-of does not trigger the JS 1.7 for-in destructuring special case.
michael@0: 
michael@0: version(170);
michael@0: 
michael@0: var data = [[1, 2, 3], [4, 5, 6, 7]];
michael@0: 
michael@0: function test(vars, expr, result) {
michael@0:     var s = '';
michael@0:     eval("for (" + vars + " of data) s += (" + expr + ") + ';';");
michael@0:     assertEq(s, result);
michael@0: }
michael@0: 
michael@0: for (var prefix of ["var ", "let ", ""]) {
michael@0:     test(prefix + "[a, b, c]",
michael@0:          "a + ',' + b + ',' + c",
michael@0:          "1,2,3;4,5,6;");
michael@0: }
michael@0: 
michael@0: test("var [a]", "a", "1;4;");
michael@0: test("var {length: len}", "len", "3;4;");
michael@0: test("var {length}", "length", "3;4;");
michael@0: test("{}", "0", "0;0;");
michael@0: