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
#![warn(
nonstandard_style,
rust_2018_idioms,
future_incompatible,
missing_debug_implementations,
missing_docs
)]
mod chart;
mod data;
mod utils;
pub use ansi_term::{Color, Style};
pub use chart::Chart;
pub use data::Data;
#[cfg(test)]
mod tests {
use crate::{Chart, Data};
use std::io;
struct NullWriter;
impl io::Write for NullWriter {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Ok(buf.len())
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
struct ErrWriter;
impl io::Write for ErrWriter {
fn write(&mut self, _: &[u8]) -> io::Result<usize> {
Err(io::Error::from(io::ErrorKind::Other))
}
fn flush(&mut self) -> io::Result<()> {
Err(io::Error::from(io::ErrorKind::Other))
}
}
#[test]
#[should_panic]
fn empty_data() {
Chart::new().draw_into(NullWriter, &[]).unwrap();
}
#[test]
fn data_len() {
let chart = Chart::new();
for len in 1..=16 {
println!("{}", len);
let data = vec![Default::default(); len];
chart.draw_into(NullWriter, &data).unwrap();
}
}
#[test]
fn very_much_data() {
let chart = Chart::new();
let data = vec![Default::default(); 2048];
chart.draw_into(NullWriter, &data).unwrap();
}
#[test]
fn config_combinations() {
let mut chart = Chart::new();
for radius in 0..=5 {
chart.radius(radius);
for aspect_ratio in 1..=5 {
chart.aspect_ratio(aspect_ratio);
for legend in &[true, false] {
chart.legend(*legend);
for data_len in 1..=5 {
let data = vec![Default::default(); data_len];
chart.draw_into(NullWriter, &data).unwrap();
}
}
}
}
}
#[should_panic]
#[test]
fn zero_total() {
#[rustfmt::skip]
let data = vec![Data { value: 0.0, ..Default::default() }; 2];
Chart::new().draw(&data)
}
#[test]
fn writer_err() {
Chart::new()
.draw_into(ErrWriter, &[Default::default()])
.expect_err("expected `draw_into` to propagate io error");
}
}