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Moments: Add serde test

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This commit is contained in:
Vinzent Steinberg 2018-01-11 19:42:41 +01:00
parent a6a477d621
commit d539342bf1
1 changed files with 17 additions and 11 deletions
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28
tests/moments.rs
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@ -51,24 +51,30 @@ fn simple() {
assert_almost_eq!(a.standardized_moment(4), -1.365 + 3.0, 1e-14);
}
/*
#[cfg(feature = "serde")]
#[test]
fn simple_serde() {
let a: Kurtosis = (1..6).map(f64::from).collect();
let a: Moments = (1..6).map(f64::from).collect();
let b = serde_json::to_string(&a).unwrap();
assert_eq!(&b, "{\"avg\":{\"avg\":{\"avg\":{\"avg\":3.0,\"n\":5},\"sum_2\":10.0},\"sum_3\":0.0},\"sum_4\":34.0}");
let mut c: Kurtosis = serde_json::from_str(&b).unwrap();
assert_eq!(c.mean(), 3.0);
assert_eq!(&b, "{\"n\":5,\"avg\":3.0,\"m\":[10.0,1.7763568394002506e-15,34.00000000000001]}");
let mut c: Moments = serde_json::from_str(&b).unwrap();
assert_eq!(c.len(), 5);
assert_eq!(c.sample_variance(), 2.5);
assert_almost_eq!(c.error_mean(), f64::sqrt(0.5), 1e-16);
assert_eq!(c.skewness(), 0.0);
assert_eq!(c.mean(), 3.0);
assert_eq!(c.central_moment(0), 1.0);
assert_eq!(c.central_moment(1), 0.0);
// variance
assert_eq!(c.central_moment(2), 2.0);
assert_eq!(c.standardized_moment(0), 5.0);
assert_eq!(c.standardized_moment(1), 0.0);
assert_eq!(c.standardized_moment(2), 1.0);
assert_almost_eq!(c.sample_skewness(), 0.0, 1e-15);
assert_almost_eq!(c.standardized_moment(3), 0.0, 1e-15);
c.add(1.0);
assert_almost_eq!(c.skewness(), 0.2795084971874741, 1e-15);
assert_almost_eq!(c.kurtosis(), -1.365, 1e-15);
// skewness
assert_almost_eq!(c.standardized_moment(3), 0.2795084971874741, 1e-15);
// kurtosis
assert_almost_eq!(c.standardized_moment(4), -1.365 + 3.0, 1e-14);
}
*/
#[test]
fn merge() {