Add FakeDate object

src/core/MockDate.js

@@ -0,0 +1,59 @@
+getJasmineRequireObj().MockDate = function() {
+  function MockDate(global) {
+    var self = this;
+    var currentTime = 0;
+
+    if (!global || !global.Date) {
+      self.install = function() {};
+      self.tick = function() {};
+      self.reset = function() {};
+      return self;
+    }
+
+    self.install = function(mockDate) {
+      if (mockDate instanceof Date) {
+        currentTime = mockDate.getTime();
+      } else {
+        currentTime = global.Date.now();
+      }
+    };
+
+    self.tick = function(millis) {
+      millis = millis || 0;
+      currentTime = currentTime + millis;
+    };
+
+    self.reset = function() {
+      currentTime = 0;
+    };
+
+    self.Date = FakeDate;
+
+    createDateProperties();
+
+    return self;
+
+    function FakeDate() {
+      if (arguments.length === 0) {
+        return new global.Date(currentTime);
+      } else {
+        return global.Date.apply(this, arguments);
+      }
+	  }
+
+    function createDateProperties() {
+      FakeDate.prototype = global.Date.prototype;
+
+      FakeDate.now = function() {
+        return currentTime;
+      }
+
+      FakeDate.toSource = global.Date.toSource;
+      FakeDate.toString = global.Date.toString;
+      FakeDate.parse = global.Date.parse;
+      FakeDate.UTC = global.Date.UTC;
+    }
+	}
+
+  return MockDate;
+};