Revert "Port regexp tests from V8 to Dart."

tests/corelib/regexp/toString_test.dart

Index: tests/corelib/regexp/toString_test.dart
diff --git a/tests/corelib/regexp/toString_test.dart b/tests/corelib/regexp/toString_test.dart
deleted file mode 100644
index 0f9ea60dddca8e86d476a6009e59eb87b918c934..0000000000000000000000000000000000000000
--- a/tests/corelib/regexp/toString_test.dart
+++ /dev/null
@@ -1,70 +0,0 @@
-// Copyright (c) 2014, the Dart project authors. All rights reserved.
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions
-// are met:
-// 1.  Redistributions of source code must retain the above copyright
-//     notice, this list of conditions and the following disclaimer.
-// 2.  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.
-//
-// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
-
-import 'v8_regexp_utils.dart';
-import 'package:expect/expect.dart';
-
-void main() {
-  dynamic testForwardSlash(pattern, _string)
-  {
-      var string = _string;
-
-      var re1 = new RegExp(pattern);
-
-      return re1.hasMatch(string);
-  }
-
-  dynamic testLineTerminator(pattern)
-  {
-      var re1 = new RegExp(pattern);
-
-      return new RegExp(r"\n|\r|\u2028|\u2029").hasMatch(re1.toString());
-  }
-
-  // These strings are equivalent, since the '\' is identity escaping the '/' at the string level.
-  shouldBeTrue(testForwardSlash("^/\$", "/"));
-  shouldBeTrue(testForwardSlash("^\/\$", "/"));
-  // This string passes "^\/$" to the RegExp, so the '/' is escaped in the re!
-  shouldBeTrue(testForwardSlash("^\\/\$", "/"));
-  // These strings pass "^\\/$" and "^\\\/$" respectively to the RegExp, giving one '\' to match.
-  shouldBeTrue(testForwardSlash("^\\\\/\$", "\\/"));
-  shouldBeTrue(testForwardSlash("^\\\\\\/\$", "\\/"));
-  // These strings match two backslashes (the second with the '/' escaped).
-  shouldBeTrue(testForwardSlash("^\\\\\\\\/\$", "\\\\/"));
-  shouldBeTrue(testForwardSlash("^\\\\\\\\\\/\$", "\\\\/"));
-  // Test that nothing goes wrongif there are multiple forward slashes!
-  shouldBeTrue(testForwardSlash("x/x/x", "x/x/x"));
-  shouldBeTrue(testForwardSlash("x\\/x/x", "x/x/x"));
-  shouldBeTrue(testForwardSlash("x/x\\/x", "x/x/x"));
-  shouldBeTrue(testForwardSlash("x\\/x\\/x", "x/x/x"));
-
-  shouldBeFalse(testLineTerminator("\\n"));
-  shouldBeFalse(testLineTerminator("\\\\n"));
-  shouldBeFalse(testLineTerminator("\\r"));
-  shouldBeFalse(testLineTerminator("\\\\r"));
-  shouldBeFalse(testLineTerminator("\\u2028"));
-  shouldBeFalse(testLineTerminator("\\\\u2028"));
-  shouldBeFalse(testLineTerminator("\\u2029"));
-  shouldBeFalse(testLineTerminator("\\\\u2029"));
-}