diff --git a/test/annexB/language/expressions/conditional/emulates-undefined.js b/test/annexB/language/expressions/conditional/emulates-undefined.js new file mode 100644 index 0000000000..889634d8d2 --- /dev/null +++ b/test/annexB/language/expressions/conditional/emulates-undefined.js @@ -0,0 +1,25 @@ +// 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);