public function testGetUsersByRole()
 {
     $role = 'Review Manager';
     $users = OshaWorkflowPermissions::getUsersByRole($role);
     $this->assertNotEmpty($users);
     $role = user_role_load_by_name('Review Manager');
     $users = OshaWorkflowPermissions::getUsersByRole($role->rid);
     $this->assertNotEmpty($users);
 }