PHPUnit getMock() with namespace

Question

My quest of starting to use namespaces in PHP keeps continuing. This time PHPUnit gives me problems. My setup() method is like this:

$test = new \MyNamespace\NonPersistentStorage(); // works
$mock = $this->getMock('\\MyNamespace\\NonPersistentStorage'); // doesn't work

The getMock() method only results in PHP looking for a NonPersistentStorage class. Not within the namespace.

Q: What do I need to change to get the getMock() method look for the class in the namespace?

Edit: The double backslash is not the problem. Also see: the manual: (quote)

'Inside a single-quoted string, the backslash escape sequence is much safer to use, but it is still recommended practice to escape backslashes in all strings as a best practice.'

edit: What worked for me is in the comments of the answer of Ignace R.

Answer 1

use this string instead (without the double backslashes):

$mock = $this->getMock('\MyNamespace\NonPersistentStorage');

Answer 2

String references to classes generally don't have the leading backslash. Try removing it and tell us if it works.

EDIT: and if it doesn't, try class_alias to create an alias in the global namespace for that class. However, that would be an ugly solution...