topos 0.12.0

An autodiff compiler stack in Rust.
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

use super::*;
use crate::Tensor;
use malevich::Theme;

#[test]
fn numbers_drop_trailing_zeros_and_keep_ordinary_magnitudes_plain() {
    assert_eq!(number(0.0), "0");
    assert_eq!(number(1.0), "1");
    assert_eq!(number(0.5), "0.5");
    assert_eq!(number(-2.25), "-2.25");
    assert_eq!(number(1234.5), "1234.5");
}

#[test]
fn numbers_outside_the_readable_band_become_exponential() {
    assert_eq!(number(1e-9), "1.000e-9");
    assert_eq!(number(2.5e12), "2.500e12");
}

#[test]
fn numbers_name_the_non_finite_cases_instead_of_formatting_them() {
    assert_eq!(number(f64::NAN), "NaN");
    assert_eq!(number(f64::INFINITY), "inf");
    assert_eq!(number(f64::NEG_INFINITY), "-inf");
}

#[test]
fn shapes_render_as_axis_lists() {
    assert_eq!(shape_text(&Shape::new([2, 3])), "[2, 3]");
    assert_eq!(shape_text(&Shape::scalar()), "[]");
}

#[test]
fn a_scalar_payload_renders_as_one_number() {
    let (html, text) = body(Theme::DARK, &Tensor::from(2.5_f64));
    assert!(html.contains("2.5"));
    assert_eq!(text, "2.5");
    assert!(!html.contains("<table"));
}

#[test]
fn a_small_matrix_renders_as_an_exact_table() {
    let tensor = Tensor::new([2, 3], vec![1.0_f64, 2.0, 3.0, 4.0, 5.0, 6.0]);
    let (html, text) = body(Theme::DARK, &tensor);
    assert!(html.starts_with("<table"));
    // Two rows of three, so exactly two row openers.
    assert_eq!(html.matches("<tr>").count(), 2);
    assert_eq!(html.matches("<td").count(), 6);
    assert_eq!(text, "1 2 3\n4 5 6");
}

#[test]
fn a_large_matrix_renders_as_a_chart_rather_than_a_table() {
    let elements: Vec<f64> = (0..(20 * 20)).map(|index| index as f64).collect();
    let tensor = Tensor::new([20, 20], elements);
    let (html, _) = body(Theme::DARK, &tensor);
    assert!(!html.contains("<table"));
    assert!(html.contains("<pre"));
}

#[test]
fn a_long_vector_renders_as_a_chart_rather_than_a_table() {
    let elements: Vec<f64> = (0..64).map(|index| index as f64).collect();
    let tensor = Tensor::new([64], elements);
    let (html, _) = body(Theme::DARK, &tensor);
    assert!(!html.contains("<table"));
}

#[test]
fn the_header_reports_shape_type_and_extremes() {
    let tensor = Tensor::new([2, 2], vec![1.0_f64, 2.0, 3.0, 4.0]);
    let (summary, unusual) = extrema(&tensor);
    let header = header::<f64>(&tensor.shape(), summary, unusual);
    assert!(header.contains("[2, 2]"));
    assert!(header.contains("f64"));
    assert!(header.contains("min 1"));
    assert!(header.contains("max 4"));
    assert!(header.contains("mean 2.5"));
}

#[test]
fn non_finite_elements_are_counted_and_excluded_from_the_extremes() {
    let tensor = Tensor::new([3], vec![1.0_f64, f64::NAN, 3.0]);
    let (summary, unusual) = extrema(&tensor);
    let header = header::<f64>(&tensor.shape(), summary, unusual);
    assert!(header.contains("1 non-finite"));
    assert!(header.contains("min 1"));
    assert!(header.contains("max 3"));
    assert!(header.contains("mean 2"));
}

#[test]
fn an_all_non_finite_payload_still_renders_without_extremes() {
    let tensor = Tensor::new([2], vec![f64::NAN, f64::NAN]);
    let (summary, unusual) = extrema(&tensor);
    let header = header::<f64>(&tensor.shape(), summary, unusual);
    assert!(header.contains("2 non-finite"));
    assert!(!header.contains("mean"));
}

#[test]
fn a_constant_fill_reports_extrema_without_walking_the_volume() {
    let tensor = Tensor::filled([1_000], 2.0_f64);
    let (summary, unusual) = extrema(&tensor);
    assert_eq!(unusual, 0);
    assert_eq!(summary, Some((2.0, 2.0, 2.0)));
}

#[test]
fn a_huge_matrix_charts_a_subsample_rather_than_a_table() {
    let tensor = Tensor::filled([200, 200], 1.0_f64);
    let (html, _) = body(Theme::DARK, &tensor);
    assert!(!html.contains("<table"));
    assert!(html.contains("<pre"));
}

#[test]
fn a_flat_payload_gets_no_shading_because_there_is_no_variation() {
    let tensor = Tensor::new([2, 2], vec![3.0_f64; 4]);
    let (html, _) = body(Theme::DARK, &tensor);
    assert!(html.contains("transparent"));
    assert!(!html.contains("rgba("));
}

#[test]
fn rendering_is_deterministic_for_a_given_payload_and_theme() {
    let tensor = Tensor::new([2, 3], vec![1.0_f64, 2.0, 3.0, 4.0, 5.0, 6.0]);
    assert_eq!(
        payload_card(Theme::DARK, "value", &tensor),
        payload_card(Theme::DARK, "value", &tensor)
    );
}

#[test]
fn the_theme_changes_the_card_and_nothing_else() {
    let tensor = Tensor::new([2, 2], vec![1.0_f64, 2.0, 3.0, 4.0]);
    let dark = payload_card(Theme::DARK, "value", &tensor);
    let light = payload_card(Theme::LIGHT, "value", &tensor);
    assert_ne!(dark, light);
    assert!(dark.contains("#0d1117"));
    assert!(light.contains("#ffffff"));
}

#[test]
fn payload_cards_name_the_element_through_the_emission_vocabulary() {
    let single = Tensor::new([1], vec![1.0_f32]);
    assert!(payload_card(Theme::DARK, "value", &single).contains("f32"));
    let wide = Tensor::from(crate::Bf16::from(1.0));
    assert!(payload_card(Theme::DARK, "value", &wide).contains("bf16"));
}