41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
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// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Flags: --allow-natives-syntax --stack-size=150
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const flat_string = "1234567890123"; // ConsString min length 13.
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// TF may create cons strings with an empty 'first'. This tests that such
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// strings are appropriately handled and flattened.
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function CreateNestedTFConsString(level) {
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let result = %ConstructConsString("", flat_string);
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for (let i = 0; i < level; i++) {
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result = %ConstructConsString("", result);
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}
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return result;
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}
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const re = /1.3/;
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{
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let subject = CreateNestedTFConsString(0);
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assertTrue(re.test(subject)); // Flattens.
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assertTrue(%StringIsFlat(subject));
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assertEquals(subject, flat_string);
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}
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{
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let subject = CreateNestedTFConsString(1);
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assertTrue(re.test(subject)); // Flattens.
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assertTrue(%StringIsFlat(subject));
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assertEquals(subject, flat_string);
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}
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{
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let subject = CreateNestedTFConsString(1000);
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assertTrue(re.test(subject)); // Flattens.
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assertTrue(%StringIsFlat(subject));
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assertEquals(subject, flat_string);
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}
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