Comments (5)
Yes. The plan is to make a seed available, and then you should be able to materialize any RNG from that.
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Seems related to #267
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This really hurts the ability to write good Arbitrary impls for complicated data. I'm sure there are lots of examples, but my use case can be reduced to just a vector of vectors, Vec<Vec<u32>>
. To make sure I sample the data properly I want to generate both tall skinny arrays and short wide ones. This means that the size parameter must be divided randomly into two factors in the arbitrary
method, which requires a bounded random float.
If the issue with gen_range
is that it exposes rand
types, could I propose simply adding a public method Gen::gen_uniform(&mut self) -> f32
which generates a uniformly distributed float in the unit interval? That should satisfy most needs.
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Is there a known plan to make this work that would be followed by a first time contributor?
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Perhaps a bit hacky, but the workaround I ended up using was:
pub fn range(gen: &mut Gen, range: Range<u64>) -> u64 {
u64::arbitrary(gen) % (range.end - range.start) + range.start
}
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Related Issues (20)
- Identity checking HOT 3
- Stack overflow in quickcheck case shrinking HOT 3
- example case sort TEST FAILED HOT 1
- QuickChecking Const Generic Code HOT 5
- Implement Arbitrary for AsMut<[T: Arbitrary]> HOT 2
- Infinite Repetition/Never Ending Test with `f32` and `f64`. HOT 17
- Q: Idiomatic way to specify the length of an arbitrary vector HOT 7
- <newbie> How to generate a number within a range HOT 2
- Negating an integer leads to stack overflow HOT 2
- upgrade notes would be nice. HOT 1
- debug_reprs taking up 41% of test runtime HOT 2
- warning: panic message is not a string literal HOT 1
- Rng Size for Vec Arbitrary cannot be 0
- Impl Clone for Gen
- Implement something like choose_weighted for `Gen`
- Is this still maintained? HOT 1
- Is quickcheck still maintained? HOT 1
- How to combine quickcheck 1+ with fake? HOT 3
- Durations's Arbitrary instance is dependant on Gen's size HOT 1
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