Speed up long-running test cases.

test/mjsunit/json2.js

 // Copyright 2012 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
@@ skipping 22 matching lines @@
 assertTrue(JSON.stringify(this, null, 0).indexOf('"a":12345') > 0);
 
 // Test JSON.stringify of array in dictionary mode.
 function TestStringify(expected, input) {
   assertEquals(expected, JSON.stringify(input));
   assertEquals(expected, JSON.stringify(input, null, 0));
 }
 
 var array_1 = [];
 var array_2 = [];
-array_1[100000] = 1;
-array_2[100000] = function() { return 1; };
-var nulls = "";
-for (var i = 0; i < 100000; i++) {
-  nulls += 'null,';
+array_1[1<<13] = 1;
+array_2[1<<13] = function() { return 1; };
+var nulls = "null,";
+for (var i = 0; i < 13; i++) {
+  nulls += nulls;
 }
+

[Igor Sheludko, 2013/11/25 19:37:49]

Nice!

 expected_1 = '[' + nulls + '1]';
 expected_2 = '[' + nulls + 'null]';
 TestStringify(expected_1, array_1);
 TestStringify(expected_2, array_2);
 
 // Test JSValue with custom prototype.
 var num_wrapper = Object(42);
 num_wrapper.__proto__ = { __proto__: null,
                           toString: function() { return true; } };
 TestStringify('1', num_wrapper);
@@ skipping 112 matching lines @@
 non_enum.a = 1;
 Object.defineProperty(non_enum, "b", { value: 2, enumerable: false });
 non_enum.c = 3;
 TestStringify('{"a":1,"c":3}', non_enum);
 
 var str = "external";
 try {
   externalizeString(str, true);
 } catch (e) { }
 TestStringify("\"external\"", str, null, 0);