Add --repeat option to repeat a sequence of Hurl file (and requests)

[jcamiel]

When running a.hurl b.hurl c.hurl:

$ hurl --repeat 2 a.hurl b.hurl c.hurl

Will run

a.hurl b.hurl c.hurl a.hurl b.hurl c.hurl

In an [Options] section:

GET https://foo.com

GET https://bar.com
[Options]
repeat: 2

GET https://baz.com

Will run https://foo.com, https://bar.com, https://bar.com, https://baz.com

To discuss: --repeat-mode

We could add a cli only option --repeat-mode that takes two values: --repeat-mode=abab (default) or --repeat-mode=aabb

$ hurl --repeat 2 --repeat-mode abab a.hurl b.hurl c.hurl

=> a.hurl b.hurl c.hurl a.hurl b.hurl c.hurl

$ hurl --repeat 2 --repeat-mode aabb a.hurl b.hurl c.hurl

=> a.hurl a.hurl b.hurl b.hurl c.hurl c.hurl

[jcamiel]

@fabricereix we could use two options --repeat to repeat a file and --repeat-all to repeat a list of file:

With one file:

$ hurl --repeat 3 a.hurl
a.hurl a.hurl a.hurl

$ hurl --repeat-all 3 a.hurl
a.hurl a.hurl a.hurl

With two files:

$ hurl --repeat 3 a.hurl b.hurl
a.hurl a.hurl a.hurl b.hurl b.hurl b.hurl

$ hurl --repeat-all 3 a.hurl b.hurl
a.hurl b.hurl a.hurl b.hurl a.hurl b.hurl

Combined:

$ hurl --repeat 2 --repeat-all 3 a.hurl b.hurl
a.hurl a.hurl b.hurl b.hurl a.hurl a.hurl b.hurl b.hurl a.hurl a.hurl b.hurl b.hurl

[0x61nas]

@jcamiel I didn't get the difference between the --repeat and --repeat-all options, from looking at the provided examples, seams like they just repeat all provided files to me (a.k.a. they are the same)

[jcamiel]

When you've two files A and B, if you want to repeat 3 times these two files what is the sequence:

A B A B A B

Or

A A A B B B

It maybe not worth it to make two options, we'll chose a mode and one "mode" and do only one option --repeat

[0x61nas]

aha, reasonable somehow, but the options names made me confused

It maybe not worth it to make two options, we'll chose a mode and one "mode" and do only one option --repeat

I think we should have one option --repeat with only one default "mode", and then we can have another different option to just modify the repeat mode.

this will help us to eliminate the confusion, and it'll help us to add more "modes" like random or power-set(all the possible combinations)

[fabricereix]

I also quite prefer to have only one repeat to make it simpler.
Choosing the following repeat ABABAB which seems the most common in programming.

For example, in Python

>>> from itertools import repeat
>>> files = ['A', 'B']
>>> list(repeat(files, 3))
[['A', 'B'], ['A', 'B'], ['A', 'B']]

Leaving other custom repeat (such as AAABBB) to a script calling Hurl, at least for the time-being.

[fabricereix]

for example, to run AAABBB synchronously

hurl --repeat 3 A
hurl --repeat 3 B