zenvoich / fuzz Goto Github PK
View Code? Open in Web Editor NEWMotoko fuzzing library
License: MIT License
Motoko fuzzing library
License: MIT License
Hi Zen,
Was using this package today and strangely the randomAlphanumeric(30) is returning 31 chars.
Eg: eYuerqcSz8WPWG3kUOP1kUyVPR9jnBJ
Can you double check what might be happening?
Thanks for this lib ๐
Hey @ZenVoich,
I implemented thisshuffle function in one of my unit tests and thought it would be a good addition to this library.
It could potentially be included as a .shuffle()
method in a new FuzzBuffer module, a FuzzArrayMut module, or perhaps even both.
If you're okay with it, I could submit a PR to add this feature.
func shuffle_buffer<A>(fuzz : Fuzz.Fuzzer, buffer : Buffer.Buffer<A>) {
for (i in Iter.range(0, buffer.size() - 3)) {
let j = fuzz.nat.randomRange(i + 1, buffer.size() - 1);
let tmp = buffer.get(i);
buffer.put(i, buffer.get(j));
buffer.put(j, tmp);
};
};
The buffer-size() - 3
might be confusing but here's how the selection would look in the last iteration:
buffer -> [..., i, i + 1, buffer.size() - 1]
j
could be i + 1
or buffer.size() - 1
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