mirror of https://github.com/tc39/test262.git
36 lines
1.5 KiB
JavaScript
36 lines
1.5 KiB
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: >
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Named groups in Unicode RegExps have some syntax errors and some
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compatibility escape fallback behavior.
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esid: prod-GroupSpecifier
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features: [regexp-named-groups]
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includes: [compareArray.js]
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---*/
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assert.throws(SyntaxError, () => eval("/(?<>a)/"));
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assert.throws(SyntaxError, () => eval("/(?<aa)/"));
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assert.throws(SyntaxError, () => eval("/(?<42a>a)/"));
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assert.throws(SyntaxError, () => eval("/(?<:a>a)/"));
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assert.throws(SyntaxError, () => eval("/(?<a:>a)/"));
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assert.throws(SyntaxError, () => eval("/(?<a>a)(?<a>a)/"));
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assert.throws(SyntaxError, () => eval("/(?<a>a)(?<b>b)(?<a>a)/"));
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assert.throws(SyntaxError, () => eval("/(?<a>.)\\k/"));
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assert.throws(SyntaxError, () => eval("/(?<a>.)\\k<a/"));
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assert.throws(SyntaxError, () => eval("/(?<a>.)\\k<>/"));
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assert.throws(SyntaxError, () => eval("/(?<a>.)\\k<b>/"));
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assert.throws(SyntaxError, () => eval("/(?<a>a)\\k<ab>/"));
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assert.throws(SyntaxError, () => eval("/(?<ab>a)\\k<a>/"));
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assert.throws(SyntaxError, () => eval("/\\k<a>(?<ab>a)/"));
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assert.throws(SyntaxError, () => eval("/\\k<a(?<a>a)/"));
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// A couple of corner cases around '\k' as named back-references vs. identity
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// escapes.
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assert(/\k<a>(?<a>x)/.test("x"));
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assert.throws(SyntaxError, () => eval("/\\k<a>(?<b>x)/"));
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assert.throws(SyntaxError, () => eval("/\\k<a(?<a>.)/"));
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assert.throws(SyntaxError, () => eval("/\\k(?<a>.)/"));
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