fusible 0.3.0

Electronic linter: a fuse that blows to block firmware code generation
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

//! Unit tests for detection precedence and path lookup.

use std::ffi::OsString;
use std::fs::{create_dir_all, File};
use std::path::{Path, PathBuf};

use crate::tscircuit::detect::detect_runner;
use crate::tscircuit::error::RunnerError;
use crate::tscircuit::RunnerKind;

struct TempDirGuard {
    path: PathBuf,
}

impl TempDirGuard {
    fn new(prefix: &str) -> Self {
        let unique = format!(
            "{prefix}_{}_{}",
            std::process::id(),
            std::time::SystemTime::now()
                .duration_since(std::time::UNIX_EPOCH)
                .unwrap()
                .as_nanos()
        );
        let path = std::env::temp_dir().join(unique);
        create_dir_all(&path).unwrap();
        Self { path }
    }
}

impl Drop for TempDirGuard {
    fn drop(&mut self) {
        let _ = std::fs::remove_dir_all(&self.path);
    }
}

fn create_executable(path: &Path) {
    if let Some(parent) = path.parent() {
        create_dir_all(parent).unwrap();
    }
    File::create(path).unwrap();

    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        let mut perms = std::fs::metadata(path).unwrap().permissions();
        perms.set_mode(0o755);
        std::fs::set_permissions(path, perms).unwrap();
    }
}

#[test]
fn detects_local_node_modules_tsci_first() {
    let temp = TempDirGuard::new("fusible_detect_local");
    let local_bin = temp.path.join("node_modules/.bin/tsci");
    create_executable(&local_bin);

    let global_dir = temp.path.join("global");
    create_executable(&global_dir.join("tsci"));

    let path_os = std::env::join_paths([&global_dir]).unwrap();
    let runner = detect_runner(&temp.path, Some(&path_os)).expect("runner detected");

    assert_eq!(runner.kind(), &RunnerKind::Local(local_bin));
}

#[test]
fn detects_global_tsci_when_local_absent() {
    let temp = TempDirGuard::new("fusible_detect_global");
    let global_dir = temp.path.join("global");
    let global_bin = global_dir.join("tsci");
    create_executable(&global_bin);

    let bun_dir = temp.path.join("bun_bin");
    create_executable(&bun_dir.join("bun"));

    let path_os = std::env::join_paths([&global_dir, &bun_dir]).unwrap();
    let runner = detect_runner(&temp.path, Some(&path_os)).expect("runner detected");

    assert_eq!(runner.kind(), &RunnerKind::Global(global_bin));
}

#[test]
fn detects_bun_before_npx() {
    let temp = TempDirGuard::new("fusible_detect_bun");
    let bun_dir = temp.path.join("bun_dir");
    let bun_bin = bun_dir.join("bun");
    create_executable(&bun_bin);

    let npx_dir = temp.path.join("npx_dir");
    create_executable(&npx_dir.join("npx"));

    let path_os = std::env::join_paths([&bun_dir, &npx_dir]).unwrap();
    let runner = detect_runner(&temp.path, Some(&path_os)).expect("runner detected");

    assert_eq!(runner.kind(), &RunnerKind::Bun(bun_bin));
}

#[test]
fn detects_npx_when_only_npx_present() {
    let temp = TempDirGuard::new("fusible_detect_npx");
    let npx_dir = temp.path.join("npx_dir");
    let npx_bin = npx_dir.join("npx");
    create_executable(&npx_bin);

    let path_os = std::env::join_paths([&npx_dir]).unwrap();
    let runner = detect_runner(&temp.path, Some(&path_os)).expect("runner detected");

    assert_eq!(runner.kind(), &RunnerKind::Npx(npx_bin));
}

#[test]
fn detects_npm_when_only_npm_present() {
    let temp = TempDirGuard::new("fusible_detect_npm");
    let npm_dir = temp.path.join("npm_dir");
    let npm_bin = npm_dir.join("npm");
    create_executable(&npm_bin);

    let path_os = std::env::join_paths([&npm_dir]).unwrap();
    let runner = detect_runner(&temp.path, Some(&path_os)).expect("runner detected");

    assert_eq!(runner.kind(), &RunnerKind::Npm(npm_bin));
}

#[test]
fn detection_fails_with_not_found_when_no_runner() {
    let temp = TempDirGuard::new("fusible_detect_empty");
    let empty_path = OsString::new();
    let err = detect_runner(&temp.path, Some(&empty_path)).expect_err("should fail");

    assert!(matches!(err, RunnerError::NotFound));
}