Migrate block 116.

tests/language_2/identical_closure2_test.dart

 // Copyright (c) 2012, 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.
 
 import "package:expect/expect.dart";
 
 var myIdentical = identical;
 
 class Point {
   num x, y;
   Point(this.x, this.y);
 }

[Lasse Reichstein Nielsen, 2017/08/29 07:43:40]

Point class isn't used.

[Bob Nystrom, 2017/08/30 18:21:23]

Done.

 
 main() {

[Lasse Reichstein Nielsen, 2017/08/29 07:43:40]

Add comment and/or TODO that this doesn't work when compiled to JS.

The numbers seem to be picked explicitly to not work in JS.

[Bob Nystrom, 2017/08/30 18:21:23]

Done. Also, there are status entries disabling this on dart2js and dartdevc, at
least one of which mentions the bigints bug.
Yeah. My guess is they wanted to test that identical is correct in bigints on
the VM?

   // Bigint (2^76).
   Expect.isTrue(myIdentical(75557863725914323419136, 75557863725914323419136));
   Expect.isFalse(myIdentical(75557863725914323419136, 75557863725914323419137));
 
   // Different types.
   Expect.isFalse(myIdentical(42, 42.0));
 
   // NaN handling.
   Expect.isTrue(myIdentical(double.NAN, double.NAN));
 }