The patch test is used to check information associated with different patches installed on the system. The information being tested is based off the /usr/bin/showrev -p command. It extends the standard TestType as defined in the oval-definitions-schema and one should refer to the TestType description for more information. The required object element references an inetd_object and the optional state element specifies the information to check. The evaluation of the test is guided by the check attribute that is inherited from the TestType.
The patch_object element is used by a patch test to define the specific patch to be evaluated. Each object extends the standard ObjectType as definied in the oval-definitions-schema and one should refer to the ObjectType description for more information. The common set element allows complex objects to be created using filters and set logic. Again, please refer to the description of the set element in the oval-definitions-schema.
A patch object consists of a single base entity that identifies the patch to be used.