tests/corelib_2/regexp/unicode-regexp-restricted-syntax_test.dart

// Copyright (c) 2019, the Dart project authors. All rights reserved.
// Copyright 2016 the V8 project authors. All rights reserved.
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import 'package:expect/expect.dart';

import 'v8_regexp_utils.dart';

void main() {
  // test262/data/test/language/literals/regexp/u-dec-esc
  assertThrows(() => RegExp(r"\1", unicode: true));
  // test262/language/literals/regexp/u-invalid-char-range-a
  assertThrows(() => RegExp(r"[\w-a]", unicode: true));
  // test262/language/literals/regexp/u-invalid-char-range-b
  assertThrows(() => RegExp(r"[a-\w]", unicode: true));
  // test262/language/literals/regexp/u-invalid-char-esc
  assertThrows(() => RegExp(r"\c", unicode: true));
  assertThrows(() => RegExp(r"\c0", unicode: true));
  // test262/built-ins/RegExp/unicode_restricted_quantifiable_assertion
  assertThrows(() => RegExp(r"(?=.)*", unicode: true));
  assertThrows(() => RegExp(r"(?=.){1,2}", unicode: true));
  // test262/built-ins/RegExp/unicode_restricted_octal_escape
  assertThrows(() => RegExp(r"[\1]", unicode: true));
  assertThrows(() => RegExp(r"\00", unicode: true));
  assertThrows(() => RegExp(r"\09", unicode: true));
  // test262/built-ins/RegExp/unicode_restricted_identity_escape_alpha
  assertThrows(() => RegExp(r"[\c]", unicode: true));
  // test262/built-ins/RegExp/unicode_restricted_identity_escape_c
  assertThrows(() => RegExp(r"[\c0]", unicode: true));
  // test262/built-ins/RegExp/unicode_restricted_incomple_quantifier
  assertThrows(() => RegExp(r"a{", unicode: true));
  assertThrows(() => RegExp(r"a{1,", unicode: true));
  assertThrows(() => RegExp(r"{", unicode: true));
  assertThrows(() => RegExp(r"}", unicode: true));
  // test262/data/test/built-ins/RegExp/unicode_restricted_brackets
  assertThrows(() => RegExp(r"]", unicode: true));
  // test262/built-ins/RegExp/unicode_identity_escape
  assertDoesNotThrow(() => RegExp(r"\/", unicode: true));

  // escaped \0 (as NUL) is allowed inside a character class.
  shouldBe(RegExp(r"[\0]", unicode: true).firstMatch("\u0000"), ["\u0000"]);
  // unless it is followed by another digit.
  assertThrows(() => RegExp(r"[\00]", unicode: true));
  assertThrows(() => RegExp(r"[\01]", unicode: true));
  assertThrows(() => RegExp(r"[\09]", unicode: true));
  shouldBe(RegExp(r"[1\0a]+", unicode: true).firstMatch("b\u{0}1\u{0}a\u{0}2"),
      ["\u{0}1\u{0}a\u{0}"]);
  // escaped \- is allowed inside a character class.
  shouldBe(RegExp(r"[a\-z]", unicode: true).firstMatch("12-34"), ["-"]);
}