When CA Verify for VTAM runs a test stream, it compares the original output screens with the current screens. You can specify one of the following comparison types:
Compares corresponding rows of two screens to see if they are the same; comparison base includes all output screens between two input screens.
This type of comparison must be used when processing a test stream with a ruleset.
Screens to see if they are the same. Variation in bytes transmitted to the terminal is allowed as long as the end result is the same.
A logical comparison also allows for variable fields (that is, fields you would expect to be different, such as run date or time-of-day).
Note: A logical comparison is not supported for non-3270 terminals.
Compares 80-byte segments of the data streams.
Use this type of comparison for non-3270 terminal test streams and for test streams that use graphics.
During a logical, physical, or screen comparison, CA Verify for VTAM halts the run if it detects any difference between the original and current screens. At this point you have many different options. For example, you can ignore the mismatch, define additional rules, or terminate the run.
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