Revert "Port regexp tests from V8 to Dart."

tests/corelib/regexp/UC16_test.dart

-// Copyright (c) 2014, the Dart project authors. All rights reserved.
-// Copyright 2008 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
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-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-import 'v8_regexp_utils.dart';
-import 'package:expect/expect.dart';
-
-void main() {
-  // UC16
-  // Characters used:
-  // "\u03a3\u03c2\u03c3\u039b\u03bb" - Sigma, final sigma, sigma, Lambda, lamda
-  shouldBe(new RegExp(r"x(.)\1x", caseSensitive: false).firstMatch("x\u03a3\u03c3x"),
-      ["x\u03a3\u03c3x", "\u03a3"], "backref-UC16");
-  assertFalse(new RegExp(r"x(...)\1", caseSensitive: false).hasMatch("x\u03a3\u03c2\u03c3\u03c2\u03c3"),
-              "\1 ASCII, string short");
-  assertTrue(new RegExp(r"\u03a3((?:))\1\1x", caseSensitive: false).hasMatch("\u03c2x"), "backref-UC16-empty");
-  assertTrue(new RegExp(r"x(?:...|(...))\1x", caseSensitive: false).hasMatch("x\u03a3\u03c2\u03c3x"),
-            "backref-UC16-uncaptured");
-  assertTrue(new RegExp(r"x(?:...|(...))\1x", caseSensitive: false).hasMatch("x\u03c2\u03c3\u039b\u03a3\u03c2\u03bbx"),
-            "backref-UC16-backtrack");
-  var longUC16String = "x\u03a3\u03c2\u039b\u03c2\u03c3\u03bb\u03c3\u03a3\u03bb";
-  shouldBe(new RegExp(r"x(...)\1\1", caseSensitive: false).firstMatch(longUC16String),
-          [longUC16String, longUC16String.substring(1,4)],
-          "backref-UC16-twice");
-
-  assertFalse(new RegExp(r"\xc1", caseSensitive: false).hasMatch('fooA'), "quickcheck-uc16-pattern-ascii-subject");
-  assertFalse(new RegExp(r"[\xe9]").hasMatch('i'), "charclass-uc16-pattern-ascii-subject");
-  assertFalse(new RegExp(r"\u5e74|\u6708").hasMatch('t'), "alternation-uc16-pattern-ascii-subject");
-}