ruchy 4.2.0

A systems scripting language that transpiles to idiomatic Rust with extreme quality engineering
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

#![allow(missing_docs)]
//! BOOTSTRAP-002 Character Stream Processing - Runtime Test
//! Tests that `String.chars().nth()` method works in runtime evaluation
//!
//! Bug Report: `String.chars().nth()` method not implemented
//! Version: Ruchy 3.93.0
//! Blocker: BOOTSTRAP-002 Character Stream Processing

use assert_cmd::Command;
use predicates::prelude::*;

fn ruchy_cmd() -> Command {
    assert_cmd::cargo::cargo_bin_cmd!("ruchy")
}

#[test]
fn test_string_chars_nth_basic() {
    let code = r#"
let input = "hello"
let chars = input.chars()
let c = chars.nth(0)
match c {
    Some(ch) => println(ch.to_string()),
    None => println("No char")
}
"#;

    ruchy_cmd()
        .arg("-e")
        .arg(code)
        .assert()
        .success()
        .stdout(predicate::str::contains("h"));
}

#[test]
fn test_string_chars_nth_middle() {
    let code = r#"
let input = "hello"
let c = input.chars().nth(2)
match c {
    Some(ch) => println(ch.to_string()),
    None => println("No char")
}
"#;

    ruchy_cmd()
        .arg("-e")
        .arg(code)
        .assert()
        .success()
        .stdout(predicate::str::contains("l"));
}

#[test]
fn test_string_chars_nth_out_of_bounds() {
    let code = r#"
let input = "hi"
let c = input.chars().nth(10)
match c {
    Some(ch) => println("Found: " + ch.to_string()),
    None => println("None")
}
"#;

    ruchy_cmd()
        .arg("-e")
        .arg(code)
        .assert()
        .success()
        .stdout(predicate::str::contains("None"));
}

#[test]
fn test_string_chars_nth_bootstrap_002_scenario() {
    // BOOTSTRAP-002: Character stream processing for lexer
    // Token struct: Token::Char(ch, Position::Pos(line, col, offset))
    let code = r#"
let input = "x"
let c = input.chars().nth(0)
match c {
    Some(ch) => {
        println("Char: " + ch.to_string())
        ch.to_string()
    },
    None => "EOF"
}
"#;

    ruchy_cmd()
        .arg("-e")
        .arg(code)
        .assert()
        .success()
        .stdout(predicate::str::contains("Char: x"));
}