Add vectortile branch

vectortile/closure-library/closure/goog/json/json_perf.js

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+// Copyright 2012 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview JSON performance tests.
+ */
+
+goog.provide('goog.jsonPerf');
+
+goog.require('goog.dom');
+goog.require('goog.json');
+goog.require('goog.math');
+goog.require('goog.string');
+goog.require('goog.testing.PerformanceTable');
+goog.require('goog.testing.PropertyReplacer');
+goog.require('goog.testing.jsunit');
+
+goog.setTestOnly('goog.jsonPerf');
+
+var table = new goog.testing.PerformanceTable(
+    goog.dom.getElement('perfTable'));
+
+var stubs = new goog.testing.PropertyReplacer();
+
+function tearDown() {
+  stubs.reset();
+}
+
+function testSerialize() {
+  var obj = populateObject({}, 50, 4);
+
+  table.run(function() {
+    var s = JSON.stringify(obj);
+  }, 'Stringify using JSON.stringify');
+
+  table.run(function() {
+    var s = goog.json.serialize(obj);
+  }, 'Stringify using goog.json.serialize');
+}
+
+function testParse() {
+  var obj = populateObject({}, 50, 4);
+  var s = JSON.stringify(obj);
+
+  table.run(function() {
+    var o = JSON.parse(s);
+  }, 'Parse using JSON.parse');
+
+  table.run(function() {
+    var o = goog.json.parse(s);
+  }, 'Parse using goog.json.parse');
+
+  table.run(function() {
+    var o = goog.json.unsafeParse(s);
+  }, 'Parse using goog.json.unsafeParse');
+}
+
+
+/**
+ * @param {!Object} obj The object to add properties to.
+ * @param {number} numProperties The number of properties to add.
+ * @param {number} depth The depth at which to recursively add properties.
+ * @return {!Object} The object given in obj (for convenience).
+ */
+function populateObject(obj, numProperties, depth) {
+  if (depth == 0) {
+    return randomLiteral();
+  }
+
+  // Make an object with a mix of strings, numbers, arrays, objects, booleans
+  // nulls as children.
+  for (var i = 0; i < numProperties; i++) {
+    var bucket = goog.math.randomInt(3);
+    switch (bucket) {
+      case 0:
+        obj[i] = randomLiteral();
+        break;
+      case 1:
+        obj[i] = populateObject({}, numProperties, depth - 1);
+        break;
+      case 2:
+        obj[i] = populateObject([], numProperties, depth - 1);
+        break;
+    }
+  }
+  return obj;
+}
+
+
+function randomLiteral() {
+  var bucket = goog.math.randomInt(3);
+  switch (bucket) {
+    case 0:
+      return goog.string.getRandomString();
+    case 1:
+      return Math.random();
+    case 2:
+      return Math.random() >= .5;
+  }
+  return null;
+}