mirror of https://github.com/tc39/test262.git
40 lines
974 B
JavaScript
40 lines
974 B
JavaScript
|
// Copyright (C) 2015 André Bargull. All rights reserved.
|
||
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
||
|
|
|
||
|
|
/*---
|
||
|
|
info: Compound Assignment Operator evaluates its operands from left to right.
|
||
|
|
description: >
|
||
|
|
The left-hand side expression is evaluated before the right-hand side.
|
||
|
|
Left-hand side expression is MemberExpression: base[prop]. base is the
|
||
|
|
undefined value.
|
||
|
|
Check operator is "x >>= y".
|
||
|
|
---*/
|
||
|
|
|
||
|
|
function DummyError() { }
|
||
|
|
|
||
|
|
assert.throws(DummyError, function() {
|
||
|
|
var base = undefined;
|
||
|
|
var prop = function() {
|
||
|
|
throw new DummyError();
|
||
|
|
};
|
||
|
|
var expr = function() {
|
||
|
|
$ERROR("right-hand side expression evaluated");
|
||
|
|
};
|
||
|
|
|
||
|
|
base[prop()] >>= expr();
|
||
|
|
});
|
||
|
|
|
||
|
|
assert.throws(TypeError, function() {
|
||
|
|
var base = undefined;
|
||
|
|
var prop = {
|
||
|
|
toString: function() {
|
||
|
|
$ERROR("property key evaluated");
|
||
|
|
}
|
||
|
|
};
|
||
|
|
var expr = function() {
|
||
|
|
$ERROR("right-hand side expression evaluated");
|
||
|
|
};
|
||
|
|
|
||
|
|
base[prop] >>= expr();
|
||
|
|
});
|