## Storage Device Driver Reference

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### Overview

CD-ROM functional verification tests exercise the Application Program Interfaces (APIs) - mainly DosDevIOCtl variations - that interface with CD- ROM device drivers. The test environment is defined by the Device Driver Test Tool (DDTT) and each test is written as a DDTT script using Global and CD-ROM grammars. See Device Driver Test Tool (DDTT) for a description of the DDTT. The tests described herein give the user a repeatable set of scripts for verifying CD-ROM functions. They may also be used as examples for creating additional specialized test cases.

As the DDTT parses and executes each test script, it simultaneously creates a disk log file that timestamps the activity and logs each script command. If the command initiates an API call, then the result of the command is logged, be it failure with a return code or success with possible returned data. If the script fails to complete, the log, up to the point of failure, is available for diagnosis.

These tests can be used to verify correct interaction between the CD-ROM device and the following OS/2 components:

DOSDevIOCtl API interface

CDFS file system

OS2CDROM.DMD and OS2ASPI.DMD device managers

CDROM adapter (.ADD) device drivers

CDROM filter (.FLT) device drivers