test262/test/annexB/language/expressions/conditional/emulates-undefined.js

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2020-08-10 11:24:08 +02:00
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-conditional-operator-runtime-semantics-evaluation
description: >
ToBoolean returns `false` for [[IsHTMLDDA]] object; trueRef is not evaluated.
info: |
ConditionalExpression : ShortCircuitExpression ? AssignmentExpression : AssignmentExpression
1. Let lref be the result of evaluating ShortCircuitExpression.
2. Let lval be ! ToBoolean(? GetValue(lref)).
3. If lval is true, then
[...]
4. Else,
a. Let falseRef be the result of evaluating the second AssignmentExpression.
b. Return ? GetValue(falseRef).
The [[IsHTMLDDA]] Internal Slot / Changes to ToBoolean
1. If argument has an [[IsHTMLDDA]] internal slot, return false.
2. Return true.
features: [IsHTMLDDA]
---*/
assert.sameValue($262.IsHTMLDDA ? unresolved : 2, 2);