toster 0.1.1

A simple-as-toast tester for C++ solutions to competitive programming exercises
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

use std::cmp::max;
use colored::Colorize;
use comfy_table::ContentArrangement::Dynamic;
use comfy_table::{Attribute, Cell, Color, Table};
use terminal_size::{Height, Width};

pub enum TestResult {
	Correct {
		test_name: String
	},
	Incorrect {
		test_name: String,
		correct_answer: String,
		incorrect_answer: String
	},
	Error {
		test_name: String,
		error: ExecutionError
	},
	NoOutputFile {
		test_name: String
	}
}

pub enum ExecutionError {
	TimedOut,
	NonZeroReturn(i32),
	Terminated(String)
}

impl TestResult {
	pub fn to_string(&self) -> String {
		let mut result: String = String::new();

		match self {
			TestResult::Correct {test_name} => {
				result.push_str(&format!("{}", format!("Test {}:\n", test_name).bold()));
				result.push_str(&format!("{}", "Timed out".red()));
			}
			TestResult::Incorrect {test_name, correct_answer, incorrect_answer} => {
				result.push_str(&format!("{}", format!("Test {}:\n", test_name).bold()));

				let split_correct = correct_answer.split("\n").collect::<Vec<_>>();
				let split_incorrect = incorrect_answer.split("\n").collect::<Vec<_>>();

				if max(split_correct.len(), split_incorrect.len()) > 100 {
					result.push_str(&format!("{}", "Result too large to show".red()));
				}
				else {
					let (Width(w), Height(_)) = terminal_size::terminal_size().unwrap_or((Width(40), Height(0)));

					let mut table = Table::new();
					table.set_content_arrangement(Dynamic).set_width(w).set_header(vec![
						Cell::new("Output file").add_attribute(Attribute::Bold).fg(Color::Green),
						Cell::new("Your program's output").add_attribute(Attribute::Bold).fg(Color::Red)
					]);

					for i in 0..max(split_correct.len(), split_incorrect.len()) {
						let file_segment = if split_correct.len() > i { split_correct[i] } else { "" };
						let out_segment = if split_incorrect.len() > i { split_incorrect[i] } else { "" };

						if file_segment != out_segment {
							table.add_row(vec![
								Cell::new(file_segment).fg(Color::Green),
								Cell::new(out_segment).fg(Color::Red)
							]);
						}
						else {
							table.add_row(vec![file_segment, out_segment]);
						}
					}

					result.push_str(&table.to_string());
				}
			}
			TestResult::NoOutputFile { test_name } => {
				result.push_str(&format!("{}", format!("Test {}:\n", test_name).bold()));
				result.push_str(&format!("{}", "Output file does not exist".red()));
			}
			TestResult::Error { test_name, error } => {
				result.push_str(&format!("{}", format!("Test {}:\n", test_name).bold()));
				result.push_str(&format!("{}", error.to_string().red()));
			}
		}

		return result;
	}
}

impl ExecutionError {
	pub fn to_string(&self) -> String {
		return match self {
			ExecutionError::TimedOut => {
				"Timed out".to_string()
			}
			ExecutionError::NonZeroReturn(code) => {
				format!("Runtime error - the program returned a non-zero return code: {}", code)
			}
			ExecutionError::Terminated(message) => {
				format!("Runtime error - the process was terminated with the following error:\n{}", message)
			}
		}
	}
}