diff --git a/tests/mocks/libraries/session.php b/tests/mocks/libraries/session.php
new file mode 100644
index 0000000..9d6feee
--- /dev/null
+++ b/tests/mocks/libraries/session.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * Mock library to add testing features to Session driver library
+ */
+class Mock_Libraries_Session extends CI_Session {
+	/**
+	 * Simulate new page load
+	 */
+	public function reload()
+	{
+		$this->_flashdata_sweep();
+		$this->_flashdata_mark();
+		$this->_tempdata_sweep();
+	}
+}
+
+/**
+ * Mock cookie driver to overload cookie setting
+ */
+class Mock_Libraries_Session_cookie extends CI_Session_cookie {
+	/**
+	 * Overload _setcookie to manage $_COOKIE values, since actual cookies can't be set in unit testing
+	 */
+	protected function _setcookie($name, $value = '', $expire = 0, $path = '', $domain = '', $secure = false,
+	$httponly = false)
+	{
+		if (empty($value) || $expire <= time()) {
+			// Clear cookie
+			unset($_COOKIE[$name]);
+		}
+		else {
+			// Set cookie
+			$_COOKIE[$name] = $value;
+		}
+	}
+}
+
+/**
+ * Mock native driver (just for consistency in loading)
+ */
+class Mock_Libraries_Session_native extends CI_Session_native { }
+