stack-graphs 0.14.1

Name binding for arbitrary programming languages
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

// -*- coding: utf-8 -*-
// ------------------------------------------------------------------------------------------------
// Copyright © 2023, stack-graphs authors.
// Licensed under either of Apache License, Version 2.0, or MIT license, at your option.
// Please see the LICENSE-APACHE or LICENSE-MIT files in this distribution for license details.
// ------------------------------------------------------------------------------------------------

use itertools::Itertools;
use pretty_assertions::assert_eq;

use stack_graphs::stats::*;

#[test]
fn empty_distribution() {
    let hist: FrequencyDistribution<i32> = FrequencyDistribution::default();

    assert_eq!(0, hist.unique());
    assert_eq!(0, hist.count());

    let result = hist.quantiles(0).into_iter().cloned().collect_vec();
    let expected: Vec<i32> = vec![];
    assert_eq!(expected, result);
}

#[test]
fn singleton_distribution() {
    let mut hist = FrequencyDistribution::default();
    hist.record(42);

    assert_eq!(1, hist.unique());
    assert_eq!(1, hist.count());

    let result = hist.quantiles(4).into_iter().cloned().collect_vec();
    let expected: Vec<i32> = vec![42, 42, 42, 42, 42];
    assert_eq!(expected, result);
}

#[test]
fn four_value_distribution() {
    let mut hist = FrequencyDistribution::default();
    hist.record(3);
    hist.record(4);
    hist.record(1);
    hist.record(2);

    assert_eq!(4, hist.unique());
    assert_eq!(4, hist.count());

    let result = hist.quantiles(4).into_iter().cloned().collect_vec();
    let expected: Vec<i32> = vec![1, 1, 2, 3, 4];
    assert_eq!(expected, result);
}