mirror of https://github.com/tc39/test262.git
25 lines
900 B
JavaScript
25 lines
900 B
JavaScript
// Copyright 2017 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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description: If the group doesn't exist, replace with the empty string
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esid: sec-getsubstitution
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features: [regexp-named-groups]
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---*/
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let source = "(?<fst>.)(?<snd>.)|(?<thd>x)";
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for (let flags of ["", "u"]) {
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let re = new RegExp(source, flags);
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assert.sameValue("cd", "abcd".replace(re, "$<42$1>"));
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assert.sameValue("cd", "abcd".replace(re, "$<fth>"));
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assert.sameValue("cd", "abcd".replace(re, "$<$1>"));
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assert.sameValue("cd", "abcd".replace(re, "$<>"));
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}
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for (let flags of ["g", "gu"]) {
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let re = new RegExp(source, flags);
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assert.sameValue("", "abcd".replace(re, "$<42$1>"));
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assert.sameValue("", "abcd".replace(re, "$<fth>"));
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assert.sameValue("", "abcd".replace(re, "$<$1>"));
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assert.sameValue("", "abcd".replace(re, "$<>"));
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}
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