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// 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();
});
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