modified Session test for session exixtance check

tests/session/SessionTest.php

@@ -8,6 +8,7 @@
  * @since 2011-10-25
  * 
  * Unit tests for Session class
+ * @TODO: Session::destroy() - check if session was started
  * @TODO: Session::destroy() - uncheck started flag after destroy
  */
 
@@ -24,7 +25,10 @@ class SessionTest extends PHPUnit_Framework_TestCase
         $this->started = $class->getProperty('started');
         $this->started->setAccessible(true);
         Session::start();
-        Session::destroy();
+        $sid = Session::getId();
+        if (!empty($sid)) {
+            Session::destroy();
+        }
         $this->started->setValue(null, false);
     }
 
@@ -157,10 +161,27 @@ class SessionTest extends PHPUnit_Framework_TestCase
 
 class Handler
 {
-        public static function open(){}
-        public static function close(){}
-        public static function read(){}
-        public static function write(){}
-        public static function destroy(){}
-        public static function gc(){}
+    public static function open()
+    {
+    }
+
+    public static function close()
+    {
+    }
+
+    public static function read()
+    {
+    }
+
+    public static function write()
+    {
+    }
+
+    public static function destroy()
+    {
+    }
+
+    public static function gc()
+    {
+    }
 }