Format all tests.

tests/corelib/regexp/non-capturing-groups_test.dart

 // 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() {
   description(
-  'Test for behavior of non-capturing groups, as described in <a href="http://blog.stevenlevithan.com/archives/npcg-javascript">' +
-  'a blog post by Steven Levithan</a> and <a href="http://bugs.webkit.org/show_bug.cgi?id=14931">bug 14931</a>.'
-  );
+      'Test for behavior of non-capturing groups, as described in <a href="http://blog.stevenlevithan.com/archives/npcg-javascript">' +
+          'a blog post by Steven Levithan</a> and <a href="http://bugs.webkit.org/show_bug.cgi?id=14931">bug 14931</a>.');
 
   shouldBeTrue(new RegExp(r"(x)?\1y").hasMatch("y"));
   shouldBe(new RegExp(r"(x)?\1y").firstMatch("y"), ["y", null]);
   shouldBe(new RegExp(r"(x)?y").firstMatch("y"), ["y", null]);
   shouldBe(firstMatch("y", new RegExp(r"(x)?\1y")), ["y", null]);
   shouldBe(firstMatch("y", new RegExp(r"(x)?y")), ["y", null]);
   shouldBe(firstMatch("y", new RegExp(r"(x)?\1y")), ["y", null]);
   Expect.listEquals("y".split(new RegExp(r"(x)?\1y")), ["", ""]);
   Expect.listEquals("y".split(new RegExp(r"(x)?y")), ["", ""]);
   assertEquals("y".indexOf(new RegExp(r"(x)?\1y")), 0);
   assertEquals("y".replaceAll(new RegExp(r"(x)?\1y"), "z"), "z");
-  assertEquals("y".replaceAllMapped(new RegExp(r"(x)?y"), (m) => m.group(1)), "null");
-  assertEquals("y".replaceAllMapped(new RegExp(r"(x)?\1y"), (m) => m.group(1)), "null");
-  assertEquals("y".replaceAllMapped(new RegExp(r"(x)?y"), (m) => m.group(1)), "null");
+  assertEquals(
+      "y".replaceAllMapped(new RegExp(r"(x)?y"), (m) => m.group(1)), "null");
+  assertEquals(
+      "y".replaceAllMapped(new RegExp(r"(x)?\1y"), (m) => m.group(1)), "null");
+  assertEquals(
+      "y".replaceAllMapped(new RegExp(r"(x)?y"), (m) => m.group(1)), "null");
 }