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CA/EZTEST

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Adapted from the English Wikipedia article CA/EZTEST, available under CC BY-SA 4.0Updated 9 August 2025
CA-EZTEST
Company typeSoftware
IndustrySoftware testing, Debugging
PredecessorEZTEST/CICS
FounderCapex Corporation, Ken Dakin
Headquarters
Phoenix
,
United States
ProductsInteractive testing and debugging for CICS environments
OwnerComputer Associates

CA-EZTEST was an interactive testing and debugging solution for CICS environments, marketed by Computer Associates. Initially named EZTEST/CICS, it was created by Capex Corporation based in Phoenix, Arizona, with contributions from Ken Dakin of England.

This software provided source-level debugging and testing functionalities for applications developed in COBOL, PL/I, and Assembler (BAL). It served as a complement to Computer Associates' existing COBOL optimization tools.

Competition

The primary competitors to CA-EZTEST included:

  • "Intertest," originally developed by On-line Software International (U.S.). After Computer Associates International, Inc. acquired On-line Software in 1991, the product was rebranded as CA-INTERTEST, leading to the discontinuation of CA-EZTEST.
  • OLIVER (CICS interactive test/debug) from Advanced Programming Techniques (UK).
  • XPEDITER, produced by Compuware Corporation, which purchased OLIVER in 1994.

Early critical role

These testing tools played a vital role as third-party system software supporting IBM’s flagship teleprocessing system, CICS, which lacked inherent memory protection. A single malfunctioning application—commonly due to buffer overflows—could compromise system-wide data integrity and cause outages affecting thousands of terminals. Since CICS was central to global financial and commercial operations from the 1970s through the early 1990s, troubleshooting such errors was complex and typically required skilled system programmers to interpret extensive "core dump" information before restoring system functionality.

Early integrated testing environment

CA-EZTEST and similar products offered an integrated testing framework that early versions of CICS did not provide. IBM’s subsequent embedded tool, the "Execution Diagnostic Facility" (EDF), was designed for newer "Command level" developers but lacked comprehensive protective capabilities.

Supported operating systems

The software was compatible with the following operating systems:

  • IBM MVS
  • IBM XA
  • IBM VSE (with the exception of XPEDITER)

External links