test(orderBy): implement benchmark for ngRepeat with orderBy

benchmarks/orderby-bp/app.js

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+var app = angular.module('orderByBenchmark', []);
+
+app.controller('DataController', function($rootScope, $scope) {
+  this.ngRepeatCount = 5000;
+  this.rows = [];
+  var self = this;
+
+  $scope.benchmarkType = 'basic';
+
+  $scope.rawProperty = function(key) {
+    return function(item) {
+      return item[key];
+    };
+  };
+
+  // Returns a random integer between min (included) and max (excluded)
+  function getRandomInt(min, max) {
+    return Math.floor(Math.random() * (max - min)) + min;
+  }
+
+  benchmarkSteps.push({
+    name: 'setup',
+    description: 'Set rows to empty array and apply, then push new rows to be applied in next step',
+    fn: function() {
+      var oldRows = self.rows;
+      $rootScope.$apply(function() {
+        self.rows = [];
+      });
+      self.rows = oldRows;
+      if (self.rows.length !== self.ngRepeatCount) {
+        self.rows = [];
+        for (var i = 0; i < self.ngRepeatCount; i++) {
+          self.rows.push({
+            'name': getRandomInt(i, (i + 40)),
+            'index': i
+          });
+        }
+      }
+    }
+  })
+
+  benchmarkSteps.push({
+    name: '$apply',
+    fn: function() {
+      $rootScope.$apply();
+    }
+  });
+});

benchmarks/orderby-bp/bp.conf.js

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+module.exports = function(config) {
+  config.set({
+    scripts: [{
+      id: 'angular',
+      src: '/build/angular.js'
+    },{
+      src: 'app.js',
+    }]
+  });
+};

benchmarks/orderby-bp/main.html

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+<div class="container-fluid" ng-app="filtersBenchmark">
+  <div class="row" ng-controller="DataController as ctrl">
+    <div class="col-lg-8">
+      <p>Filters</p>
+
+      <p>
+        <label>Number of ngRepeats:</label>
+        <input type="number" ng-model="ctrl.ngRepeatCount">
+      </p>
+
+      <p>
+        <div class="radio">
+          <label>
+            <input type="radio" ng-model="benchmarkType" value="baseline">baseline
+          </label>
+        </div>
+        <pre><code>ng-repeat="row in ctrl.rows"</code></pre>
+        <br />
+        <div class="radio">
+          <label>
+            <input type="radio" ng-model="benchmarkType" value="orderBy">orderBy
+          </label>
+        </div>
+        <pre><code>ng-repeat="row in ctrl.rows | orderBy:'name'"</code></pre>
+        <br />
+        <div class="radio">
+          <label>
+            <input type="radio" ng-model="benchmarkType" value="orderByArray">orderBy array expression
+          </label>
+        </div>
+        <pre><code>ng-repeat="row in ctrl.rows | orderBy:['name', 'index']"</code></pre>
+        <br />
+        <div class="radio">
+          <label>
+            <input type="radio" ng-model="benchmarkType"
+            value="orderByFunction">orderBy function expression
+          </label>
+        </div>
+        <pre><code>ng-repeat="row in ctrl.rows | orderBy:rawProperty('name')"</code></pre>
+        <br />
+        <div class="radio">
+          <label>
+            <input type="radio" ng-model="benchmarkType"
+            value="orderByArrayFunction">orderBy array function expression
+          </label>
+        </div>
+        <pre><code>ng-repeat="row in ctrl.rows | orderBy:[rawProperty('name'), rawProperty('index')]"</code></pre>
+      </p>
+
+
+      Debug output:
+      <ng-switch on="benchmarkType">
+        <div ng-switch-when="baseline">
+          <span ng-repeat="row in ctrl.rows">
+            <span ng-bind="row.name"></span>,
+          </span>
+        </div>
+        <div ng-switch-when="orderBy">
+          <span ng-repeat="row in ctrl.rows | orderBy:'name'">
+            <span ng-bind="row.name"></span>,
+          </span>
+        </div>
+        <div ng-switch-when="orderByArray">
+          <span ng-repeat="row in ctrl.rows | orderBy:['name', 'index']">
+            <span ng-bind="row.name"></span>,
+          </span>
+        </div>
+        <div ng-switch-when="orderByFunction">
+          <span ng-repeat="row in ctrl.rows | orderBy:rawProperty('name')">
+            <span ng-bind="row.name"></span>,
+          </span>
+        </div>
+        <div ng-switch-when="orderByArrayFunction">
+          <span ng-repeat="row in ctrl.rows | orderBy:[rawProperty('name'), rawProperty('index')]">
+            <span ng-bind="row.name"></span>,
+          </span>
+        </div>
+      </ng-switch>
+
+    </div>
+  </div>
+</div>