OS emulation methods added.

Author: dmitry-ivanov

tests/HelperFunctions/TestCase.php

@@ -20,6 +20,18 @@ protected function setUp()
         self::$functions = mock();
     }
 
+    protected function emulateLinuxOs()
+    {
+        self::$functions->expects()->php_uname()
+            ->andReturns('Linux localhost 2.4.21-0.13mdk #1 Fri Mar 14 15:08:06 EST 2003 i686');
+    }
+
+    protected function emulateWindowsOs()
+    {
+        self::$functions->expects()->php_uname()
+            ->andReturns('Windows NT XN1 5.1 build 2600');
+    }
+
     protected function expectsExecWith($command)
     {
         self::$functions->expects()->exec($command);