mirror of https://github.com/tc39/test262.git
32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. 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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esid: sec-atom
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description: >
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Literal astral symbols within inverted CharacterClass.
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info: |
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The production Atom :: CharacterClass evaluates as follows:
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1. Evaluate CharacterClass to obtain a CharSet A and a Boolean invert.
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2. Call CharacterSetMatcher(A, invert, direction) and return its Matcher result.
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Runtime Semantics: CharacterSetMatcher ( A, invert, direction )
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1. Return an internal Matcher closure that takes two arguments, a State x and
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a Continuation c, and performs the following steps:
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[...]
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f. Let cc be Canonicalize(ch).
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g. If invert is false, then
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[...]
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h. Else,
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i. Assert: invert is true.
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ii. If there exists a member a of set A such that Canonicalize(a) is cc,
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return failure.
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---*/
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assert.sameValue(/^[^❤️]$/u.exec("❤️"), null);
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assert.sameValue(/^[^🧡]/u.exec("🧡"), null);
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assert.sameValue(/[^💛]$/u.exec("💛"), null);
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assert.sameValue(/[^💚]/u.exec("💚"), null);
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