diff --git a/test/annexB/language/expressions/logical-and/emulates-undefined.js b/test/annexB/language/expressions/logical-and/emulates-undefined.js new file mode 100644 index 0000000000..1a50436e6d --- /dev/null +++ b/test/annexB/language/expressions/logical-and/emulates-undefined.js @@ -0,0 +1,24 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-binary-logical-operators-runtime-semantics-evaluation +description: > + ToBoolean returns `false` for [[IsHTMLDDA]] object; rval is not evaluated. +info: | + LogicalANDExpression : LogicalANDExpression && BitwiseORExpression + + 1. Let lref be the result of evaluating LogicalANDExpression. + 2. Let lval be ? GetValue(lref). + 3. Let lbool be ! ToBoolean(lval). + 4. If lbool is false, return lval. + + The [[IsHTMLDDA]] Internal Slot / Changes to ToBoolean + + 1. If argument has an [[IsHTMLDDA]] internal slot, return false. + 2. Return true. +features: [IsHTMLDDA] +---*/ + +var IsHTMLDDA = $262.IsHTMLDDA; + +assert.sameValue(IsHTMLDDA && unresolved, IsHTMLDDA);