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17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
// Copyright 2023 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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// Flags: --allow-natives-syntax --turbofan --no-always-turbofan
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// Test strings with non-ascii chars
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(function() {
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function foo() {
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// no index results in index = 0
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return '\u1234'.charAt() == '\u1234';
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(true, foo());
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assertEquals(true, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(true, foo());
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assertOptimized(foo);
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})();
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// General case where index is within bounds
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(function() {
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function foo() {
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return "\u2600\u2600\u2600 \u26A1 \u26A1 \u2603\u2603\u2603 \u2600".charAt(2) === "\u2600";
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(true, foo());
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assertEquals(true, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(true, foo());
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assertOptimized(foo);
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})();
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// Case wherein index is out of bounds (returns empty string)
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(function() {
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function foo() {
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return "\u2600\u2600\u2600 \u26A1 \u26A1 \u2603\u2603\u2603 \u2600".charAt(100) === "";
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(true, foo());
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assertEquals(true, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(true, foo());
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assertOptimized(foo);
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})();
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// Case wherein index is negative (returns empty string)
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(function() {
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function foo() {
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return "\u2600\u2600\u2600 \u26A1 \u26A1 \u2603\u2603\u2603 \u2600".charAt(-1) === "";
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}
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%PrepareFunctionForOptimization(foo);
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assertEquals(true, foo());
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assertEquals(true, foo());
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(true, foo());
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})();
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