Running multiple iterations of request using data from file

[CrispyDrone]

Problem to solve

I would like to be able to have hurl run a single request (or a collection of multiple request) multiple times in a row with unique data taken from a file on each iteration.

Proposal

Support specifying a data file when invoking hurl.

Additional context and resources

There's already a feature where you can specify a --variable-file, however to be able to achieve what I want I would need to create multiple variable files, and write a bash script that would read a different one on each hurl invocation. I imagine this also wouldn't be very good performance wise when trying to run 100's to 1000's of iterations.

Postman's collection runner has this feature, and I like to use it to subject an endpoint to various cases. See https://learning.postman.com/docs/collections/running-collections/working-with-data-files/.

Tasks to complete

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