roto 0.11.0

a statically-typed, compiled, embedded scripting language
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

use std::io::Write;

use serde::Deserialize;

#[derive(Deserialize)]
#[allow(unused)]
struct Test {
    src: String,
    lang: String,
    code: String,
    source: String,
    line: usize,
    testoutput: String,
    mode: String,
}

#[test]
#[cfg(all(feature = "cli", not(miri)))]
fn manual_doctests() {
    let test_file = std::fs::File::open("tests/doctests.json").unwrap();
    let test_str = std::io::read_to_string(test_file).unwrap();
    let tests: Vec<Test> = serde_json::from_str(&test_str).unwrap();

    let dir = tempfile::tempdir().unwrap();
    let path = dir.path();

    for test in tests {
        if test.mode == "ignore" {
            continue;
        }

        let source_path = path.join(format!(
            "{}:{}",
            test.src.replace("/", "."),
            test.line
        ));

        let mut source_file = std::fs::File::create(&source_path).unwrap();

        match roto::has_main_function(&test.code) {
            Ok(false) => {
                if test.mode == "run" {
                    panic!("Can't run without main function");
                }
                source_file.write_all(test.code.as_ref()).unwrap();
            }
            Ok(true) => {
                source_file.write_all(test.code.as_ref()).unwrap();
            }
            Err(e) => {
                eprintln!("{e}");
                source_file.write_all(b"fn main() {\n").unwrap();
                source_file.write_all(test.code.as_ref()).unwrap();
                source_file.write_all(b"\n}").unwrap();
            }
        }

        drop(source_file);

        // This is inefficient, but really helpful for debugging the
        // tests.
        eprintln!("{}", std::fs::read_to_string(&source_path).unwrap());

        match &*test.mode {
            "run" => {
                assert_cmd::Command::cargo_bin("roto")
                    .unwrap()
                    .arg("run")
                    .arg(source_path)
                    .assert()
                    .stdout(test.testoutput)
                    .stderr("");
            }
            "check" => {
                let assert = assert_cmd::Command::cargo_bin("roto")
                    .unwrap()
                    .arg("check")
                    .arg(source_path)
                    .assert();

                eprint!(
                    "{}",
                    std::str::from_utf8(&assert.get_output().stderr).unwrap()
                );

                assert.stdout("All ok!\n").stderr("").success();
            }
            "error" => {
                assert_cmd::Command::cargo_bin("roto")
                    .unwrap()
                    .arg("check")
                    .arg(source_path)
                    .assert()
                    .failure();
            }
            _ => {
                panic!("unknown test mode: {}", test.mode);
            }
        }
    }

    drop(dir);
}