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26 lines
997 B
JavaScript
26 lines
997 B
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 13.7.5.11
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description: >
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Completion value when head has a declaration and iteration is skipped
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info: |
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IterationStatement : for ( var ForBinding in Expression ) Statement
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1. Let keyResult be ForIn/OfHeadEvaluation( « », Expression, enumerate).
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2. ReturnIfAbrupt(keyResult).
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13.7.5.12 Runtime Semantics: ForIn/OfHeadEvaluation
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[...]
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7. If iterationKind is enumerate, then
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a. If exprValue.[[value]] is null or undefined, then
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i. Return Completion{[[type]]: break, [[value]]: empty, [[target]]:
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empty}.
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---*/
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assert.sameValue(eval('1; for (var a in undefined) { }'), undefined);
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assert.sameValue(eval('2; for (var b in undefined) { 3; }'), undefined);
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assert.sameValue(eval('4; for (var c in null) { }'), undefined);
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assert.sameValue(eval('5; for (var d in null) { 6; }'), undefined);
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