zccache-cli 1.8.2

Command-line interface for the zccache compiler cache
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
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
133
134
135
136
137

//! Integration tests for the `zccache cache-root` introspection
//! subcommand. Issue #275: soldr (and any other wrapper) shells out to
//! this to verify at runtime that its `ZCCACHE_CACHE_DIR` redirect was
//! honored by the binary on PATH.

use std::path::Path;
use std::process::{Command, Stdio};

use zccache_core::NormalizedPath;

fn zccache_bin() -> NormalizedPath {
    let mut path = std::env::current_exe()
        .expect("current_exe")
        .parent()
        .expect("parent of test binary")
        .parent()
        .expect("target dir")
        .to_path_buf();
    if cfg!(windows) {
        path.push("zccache.exe");
    } else {
        path.push("zccache");
    }
    assert!(
        path.exists(),
        "zccache binary not found at {path:?}. Run `cargo build` first."
    );
    NormalizedPath::new(path)
}

fn run_cache_root(cache_dir: Option<&Path>, json: bool) -> std::process::Output {
    let bin = zccache_bin();
    let mut cmd = Command::new(bin.as_path());
    match cache_dir {
        Some(p) => {
            cmd.env("ZCCACHE_CACHE_DIR", p);
        }
        None => {
            cmd.env_remove("ZCCACHE_CACHE_DIR");
        }
    }
    cmd.env_remove("ZCCACHE_COLOCATE");
    cmd.arg("cache-root");
    if json {
        cmd.arg("--json");
    }
    cmd.stdin(Stdio::null())
        .stdout(Stdio::piped())
        .stderr(Stdio::piped());
    cmd.output().expect("spawn zccache cache-root")
}

#[test]
fn cache_root_default_prints_absolute_path() {
    let temp = tempfile::tempdir().expect("tempdir");
    let want = temp.path().join("zc");
    let out = run_cache_root(Some(&want), false);
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
    let stdout = String::from_utf8_lossy(&out.stdout).trim().to_string();
    let want_str = want.to_string_lossy().to_string();
    assert_eq!(
        stdout, want_str,
        "stdout `{stdout}` should equal `{want_str}`"
    );
}

#[test]
fn cache_root_env_branch_reports_env_source() {
    let temp = tempfile::tempdir().expect("tempdir");
    let want = temp.path().join("zc");
    let out = run_cache_root(Some(&want), true);
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
    let stdout = String::from_utf8_lossy(&out.stdout);
    let v: serde_json::Value =
        serde_json::from_str(stdout.trim()).expect("--json must emit valid JSON");
    assert_eq!(v["source"], "env:ZCCACHE_CACHE_DIR");
    let got = v["cache_root"].as_str().expect("cache_root is a string");
    assert_eq!(Path::new(got), want.as_path());
}

#[test]
fn cache_root_default_branch_reports_default_source_when_env_unset() {
    let out = run_cache_root(None, true);
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
    let stdout = String::from_utf8_lossy(&out.stdout);
    let v: serde_json::Value =
        serde_json::from_str(stdout.trim()).expect("--json must emit valid JSON");
    assert_eq!(v["source"], "default:platform_dirs");
    assert!(
        v["cache_root"].as_str().is_some(),
        "cache_root must be present and stringy"
    );
}

#[test]
fn cache_root_relative_env_path_is_absolute_in_output() {
    // `ZCCACHE_CACHE_DIR=./relative-zc` should still print an absolute
    // path so wrappers don't have to re-resolve it against the cwd.
    let temp = tempfile::tempdir().expect("tempdir");
    let bin = zccache_bin();
    let out = Command::new(bin.as_path())
        .env("ZCCACHE_CACHE_DIR", "relative-zc")
        .env_remove("ZCCACHE_COLOCATE")
        .current_dir(temp.path())
        .arg("cache-root")
        .stdin(Stdio::null())
        .stdout(Stdio::piped())
        .stderr(Stdio::piped())
        .output()
        .expect("spawn zccache cache-root");
    assert!(
        out.status.success(),
        "stderr: {}",
        String::from_utf8_lossy(&out.stderr)
    );
    let stdout = String::from_utf8_lossy(&out.stdout).trim().to_string();
    assert!(
        Path::new(&stdout).is_absolute(),
        "stdout `{stdout}` must be an absolute path"
    );
    assert!(
        stdout.ends_with("relative-zc"),
        "stdout `{stdout}` should end with the relative override stem"
    );
}