Allow tests to run in random order

src/core/Order.js

@@ -0,0 +1,46 @@
+/*jshint bitwise: false*/
+
+getJasmineRequireObj().Order = function() {
+  function Order(options) {
+    this.random = 'random' in options ? options.random : true;
+    var seed = this.seed = options.seed || generateSeed();
+    this.sort = this.random ? randomOrder : naturalOrder;
+
+    function naturalOrder(items) {
+      return items;
+    }
+
+    function randomOrder(items) {
+      var copy = items.slice();
+      copy.sort(function(a, b) {
+        return jenkinsHash(seed + a.id) - jenkinsHash(seed + b.id);
+      });
+      return copy;
+    }
+
+    function generateSeed() {
+      return String(Math.random()).slice(-5);
+    }
+
+    // Bob Jenkins One-at-a-Time Hash algorithm is a non-cryptographic hash function
+    // used to get a different output when the key changes slighly.
+    // We use your return to sort the children randomly in a consistent way when
+    // used in conjunction with a seed
+
+    function jenkinsHash(key) {
+      var hash, i;
+      for(hash = i = 0; i < key.length; ++i) {
+        hash += key.charCodeAt(i);
+        hash += (hash << 10);
+        hash ^= (hash >> 6);
+      }
+      hash += (hash << 3);
+      hash ^= (hash >> 11);
+      hash += (hash << 15);
+      return hash;
+    }
+
+  }
+
+  return Order;
+};