TLA+ extensions for user-defined procedure writing by programming language

[Guo Hua]

Can TLA+ support such an extension that allows running user-defined procedures written by some programming language when an event happens?
Or is there any plan for this?
It may be helpful to provide this function, such as auto-generating test cases.

Best,
Guo

[Andrew Helwer]

They term you're looking for is model-based testing. Usually this is done by pre-generating a system trace then translating that trace to events in your system and running those events against your system. It seems simpler than the on-line method you've described. There have been a number of talks at the past couple TLA+ confs about model-based testing: http://conf.tlapl.us/home/

Andrew

[Hillel Wayne]

There's also the IOUtils community module: https://github.com/tlaplus/CommunityModules/blob/master/modules/IOUtils.tla

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[Guo Hua]

Thank you for your reply. I would read this list.

Guo

[Guo Hua]

Thanks. I have noticed this work.

[tlaplus-go...@lemmster.de]

Hi Guo,

you can override any TLA+ constant-level operator with Java code (the IOUtils module that Hillel mentioned is implemented this way). This diff [1] should give you an example of how to override operators with Java code.

Markus

[1] https://github.com/tlaplus/CommunityModules/commit/8245307786478dfb6de01e2c07107f30ead0b202

[Guo Hua]

Thank you.

This is what I want.

Guo