Depends upon what you mean by "test completely". Can you have TestComplete send keystrokes to a terminal emulator to simulate user actions? Yes... two methods described to do so. Can you validate what's on screen based upon those actions against expected results? Using Text Recognition, yes with some limitations in that it's only going to be able to check that a text object with the particular text string exists... pretty much what a user would do. All a console and terminal emulator are is text on screen and TestComplete will operate against that text on screen.
Now, if you want to run SQL queries against the back end database, you can do that in a variety of ways using ADO objects or a DDT connection or something like that. If you want to run a data driven test sending different keystroke combinations to the screen and checking the back end results, yes, you can do that.
What you cannot do is verify GUI object methods and properties and detailed application state because those are not "open" to TestComplete. As mentioned, I've used Text Recognition to some success with a terminal emulator. It's not as "clean" as testing a GUI application but it's doable. Again, it all comes down to what you want to achieve using TestComplete. Give us a specific list of requirements, actions, etc., that you want to use TestComplete to test against your mainframe and we can give you more specific answers.
Robert Martin
[Hall of Fame]Please consider giving a Kudo if I write good stuff
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Why automate? I do automated testing because there's only so much a human being can do and remain healthy. Sleep is a requirement. So, while people sleep, automation that I create does what I've described above in order to make sure that nothing gets past the final defense of the testing group.
I love good food, good books, good friends, and good fun.
Mysterious Gremlin Master
Vegas Thrill Rider
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