Reapply "Port regexp tests from V8 to Dart."

tests/corelib/regexp/loop-capture_test.dart

-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright (c) 2014, the Dart project authors. All rights reserved.
+// Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef DOUBLE_CONVERSION_STRTOD_H_
-#define DOUBLE_CONVERSION_STRTOD_H_
+import 'v8_regexp_utils.dart';
+import 'package:expect/expect.dart';
 
-#include "utils.h"
-
-namespace double_conversion {
-
-// The buffer must only contain digits in the range [0-9]. It must not
-// contain a dot or a sign. It must not start with '0', and must not be empty.
-double Strtod(Vector<const char> buffer, int exponent);
-
-// The buffer must only contain digits in the range [0-9]. It must not
-// contain a dot or a sign. It must not start with '0', and must not be empty.
-float Strtof(Vector<const char> buffer, int exponent);
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_STRTOD_H_
+void main() {
+  shouldBe(new RegExp(r"(?:(a)|(b)|(c))+").firstMatch("abc"), ["abc",null,null,"c"]);
+  shouldBe(new RegExp(r"(?:(a)|b)*").firstMatch("ab"), ["ab",null]);
+}