dart-sdk/tests/corelib/reg_exp5_test.dart

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// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Dart test for testing regular expressions in Dart.
import "package:expect/expect.dart";
main() {
String str = "";
try {
RegExp ex = new RegExp(str);
} catch (e) {
if (!(e is ArgumentError)) {
Expect.fail("Expected: ArgumentError got: ${e}");
}
}
Expect.isFalse(new RegExp(r"^\w+$").hasMatch(str));
Match? fm = new RegExp(r"^\w+$").firstMatch(str);
Expect.equals(null, fm);
Iterable<Match> am = new RegExp(r"^\w+$").allMatches(str);
Expect.isFalse(am.iterator.moveNext());
Expect.equals(null, new RegExp(r"^\w+$").stringMatch(str));
}