Format all tests.

tests/language/numbers_test.dart

 // 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.
 // Test number types.
 
 library NumbersTest.dart;
+
 import "package:expect/expect.dart";
 
 class NumbersTest {
   static double testMain() {
     var one = 1;
     Expect.equals(true, one is Object);
     Expect.equals(true, one is num);
     Expect.equals(true, one is int);
     Expect.equals(false, one is double);
 
     var two = 2.0;
     Expect.equals(true, two is Object);
     Expect.equals(true, two is num);
     Expect.equals(false, two is int);
     Expect.equals(true, two is double);
 
     var result = one + two;
     Expect.equals(true, result is Object);
     Expect.equals(true, result is num);
     Expect.equals(false, result is int);
     Expect.equals(true, result is double);
 
     Expect.equals(3.0, result);
     return result;
   }
 }
 
-
 main() {
   NumbersTest.testMain();
 }