def testRetrieveInstanceId(self):
tm = TMSaveCache({},
conf_filename=self.conf_filename)
for path in ['foo', '/a/b', '/1/2']:
tm.diskSrcPath = path
self.failUnlessRaises(ValueError, tm._retrieveInstanceId)
for path in ['/a/1', '/a/1/b']:
tm.diskSrcPath = path
tm._retrieveInstanceId()
self.failUnlessEqual(tm.instanceId, 1)
