26 lines
819 B
Rust
26 lines
819 B
Rust
#![cfg_attr(feature = "cargo-clippy", allow(float_cmp, map_clone))]
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#[macro_use] extern crate proptest;
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use core::iter::Iterator;
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use average::Mean;
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use proptest::prelude::*;
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use crate::prop::num::f64;
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proptest! {
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#![proptest_config(ProptestConfig::with_cases(10000))]
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#[test]
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fn reasonable_bounds(s in prop::collection::vec(
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f64::POSITIVE | f64::NEGATIVE | f64::SUBNORMAL | f64::ZERO, 1..100usize)) {
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// See https://hypothesis.works/articles/calculating-the-mean/.
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let max = s.iter().cloned().fold(0./0., f64::max);
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let min = s.iter().cloned().fold(0./0., f64::min);
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let a: Mean = s.iter().collect();
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let mean = a.mean();
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println!("min: {} mean: {} max: {}", min, mean, max);
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assert!(min <= mean);
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assert!(mean <= max);
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}
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}
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