public function testUserIsAdministrator()
 {
     $user = user_load(1);
     $this->assertTrue(OshaWorkflowPermissions::userIsAdministrator($user));
     $user->roles = array('administrator');
     $this->assertTrue(OshaWorkflowPermissions::userIsAdministrator($user));
     $user = NULL;
     $this->assertFalse(OshaWorkflowPermissions::userIsAdministrator($user));
 }