balls 0.5.11

Git-native task tracker for parallel agent workflows
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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184

//! Tests for the `bl install` run-wiring: the `--to` checkout resolution and
//! the engine-sealed path-copy driven end to end on a founded substrate (the
//! [`crate::adopt_tests`] pattern — throwaway repos, fake plugins beside `bl`
//! where a chain participant is needed). The fixtures are `pub(crate)` so the
//! sibling §6 surface tests ([`super::surface_tests`]) share them; the argv
//! parse tests live with the parser ([`super::args`]).

#![cfg(unix)]

use super::*;
use crate::git;
use crate::layout::Xdg;
use crate::substrate;
use std::fs;
use std::os::unix::fs::PermissionsExt;
use tempfile::TempDir;

/// An edge rooted in `tmp` with the given (optional) `bl`-sibling dir.
pub(crate) fn edge(tmp: &TempDir, exe_dir: Option<PathBuf>) -> Edge {
    Edge {
        xdg: Xdg::with(tmp.path(), None, Some(&tmp.path().join("state").to_string_lossy())),
        invocation_path: tmp.path().join("proj"),
        default_actor: "tester".into(),
        depth: 0,
        exe_dir,
        path_dirs: Vec::new(),
        color: false,
        log_level: None,
        balls_clock: None,
    }
}

/// Found the two-branch substrate; returns the (landing, store) checkouts.
pub(crate) fn found(e: &Edge) -> (PathBuf, PathBuf) {
    let clone = e.xdg.clone_dir(&e.invocation_path);
    substrate::found(&clone.landing(), &clone.store(), &e.xdg, e.exe_dir.as_deref()).unwrap();
    (clone.landing(), clone.store())
}

pub(crate) fn g(cwd: &Path, args: &[&str]) {
    git::run(cwd, args, None).unwrap();
}

pub(crate) fn head(checkout: &Path) -> String {
    git::run(checkout, &["rev-parse", "HEAD"], None).unwrap()
}

pub(crate) fn run_install(e: &Edge, args: &[&str]) -> io::Result<()> {
    run(e, &args.iter().map(ToString::to_string).collect::<Vec<_>>())
}

/// A `side` branch of the landing whose `config/balls.toml` differs — a local
/// ref a standalone install can pull from.
fn side_branch(tmp: &TempDir, landing: &Path) -> &'static str {
    let wt = tmp.path().join("side-wt");
    g(landing, &["branch", "side"]);
    g(landing, &["worktree", "add", "-q", &wt.to_string_lossy(), "side"]);
    fs::write(wt.join("config/balls.toml"), "tasks_branch = \"balls/elsewhere\"\n").unwrap();
    g(&wt, &["commit", "-q", "-am", "side config"]);
    "side"
}

#[test]
fn install_before_prime_is_an_error() {
    let tmp = TempDir::new().unwrap();
    let err = run_install(&edge(&tmp, None), &["--from", "balls/tasks"]).unwrap_err();
    assert!(err.to_string().contains("bl prime"), "{err}");
}

#[test]
fn an_unresolvable_to_ref_is_refused() {
    // Sealing targets only the two local checkouts (§2): install is purely
    // local in core; transport is the tracker's (§6, bl-b8d6).
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    found(&e);
    let err = run_install(&e, &["--from", "balls/tasks", "--to", "nope"]).unwrap_err();
    assert!(err.to_string().contains("--to must name"), "{err}");
}

#[test]
fn an_option_like_from_ref_is_refused() {
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    found(&e);
    let err = run_install(&e, &["--from", "--upload-pack=evil"]).unwrap_err();
    assert!(err.to_string().contains("refusing"), "{err}");
}

#[test]
fn a_missing_from_ref_is_a_git_error() {
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    found(&e);
    let err = run_install(&e, &["--from", "no-such-ref"]).unwrap_err();
    assert!(err.to_string().contains("worktree add"), "{err}");
}

#[test]
fn install_seals_a_path_copy_onto_the_landing_tip() {
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    let (landing, _store) = found(&e);
    let from = side_branch(&tmp, &landing);
    let before = head(&landing);

    run_install(&e, &["config", "--from", from, "--to", LANDING_BRANCH]).unwrap();

    // The landing carries the side branch's config, via a NEW sealed commit.
    let cfg = fs::read_to_string(landing.join("config/balls.toml")).unwrap();
    assert!(cfg.contains("balls/elsewhere"), "installed config: {cfg}");
    assert_ne!(before, head(&landing), "a commit sealed");
    // Both ephemeral worktrees (source + change) are torn down.
    let clone = e.xdg.clone_dir(&e.invocation_path);
    assert!(!clone.change("install-src").exists());
    assert!(!clone.change("install").exists());
}

#[test]
fn an_install_seal_carries_the_checkout_scoped_trailers() {
    // §5: checkout-scoped seals carry bl-protocol/bl-op/bl-actor — only bl-id
    // (which names a single ball) is absent (bl-1d9b).
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    let (landing, _store) = found(&e);
    let from = side_branch(&tmp, &landing);
    run_install(&e, &["config", "--from", from, "--as", "me"]).unwrap();
    let msg = git::run(&landing, &["log", "-1", "--format=%B"], None).unwrap();
    let md = crate::message::parse(&msg).unwrap();
    assert_eq!(md["bl-protocol"], ["1"], "{msg}");
    assert_eq!(md["bl-op"], ["install"], "{msg}");
    assert_eq!(md["bl-actor"], ["me"], "{msg}");
    assert!(!md.contains_key("bl-id"), "{msg}");
}

#[test]
fn reinstalling_identical_content_converges_on_the_tip() {
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    let (landing, _store) = found(&e);
    let from = side_branch(&tmp, &landing);
    run_install(&e, &["config", "--from", from]).unwrap(); // --to defaults to the landing
    let sealed = head(&landing);
    run_install(&e, &["config", "--from", from]).unwrap();
    assert_eq!(sealed, head(&landing), "the no-op seal lands no empty commit");
}

#[test]
fn install_can_target_the_configured_store_branch() {
    let tmp = TempDir::new().unwrap();
    let e = edge(&tmp, None);
    let (_landing, store) = found(&e);
    let before = head(&store);
    // tasks ← tasks: a byte-identical mirror — exercises the store-target
    // resolution and converges without touching the tip.
    run_install(&e, &["tasks", "--from", crate::DEFAULT_TASKS_BRANCH, "--to", crate::DEFAULT_TASKS_BRANCH]).unwrap();
    assert_eq!(before, head(&store));
}

#[test]
fn a_failing_pre_plugin_aborts_the_seal_and_cleans_up() {
    // A fake tracker beside `bl` declares `install` (so the seed wires + binds
    // it on install.pre) but exits 1 on every hook — the engine aborts, §14
    // unwinds, and the landing tip stands.
    let tmp = TempDir::new().unwrap();
    let bin = tmp.path().join("bin");
    fs::create_dir_all(&bin).unwrap();
    let plugin = bin.join("bl-tracker");
    fs::write(
        &plugin,
        "#!/bin/sh\nif [ \"$1\" = protocol ]; then printf '{\"protocol\":[1],\"ops\":[\"install\"]}'; exit 0; fi\nexit 1\n",
    )
    .unwrap();
    fs::set_permissions(&plugin, fs::Permissions::from_mode(0o755)).unwrap();
    let e = edge(&tmp, Some(bin));
    let (landing, _store) = found(&e);
    let before = head(&landing);

    let err = run_install(&e, &["config", "--from", LANDING_BRANCH]).unwrap_err();
    assert!(err.to_string().contains("tracker"), "{err}");
    assert_eq!(before, head(&landing), "the abort unwound — nothing sealed");
    let clone = e.xdg.clone_dir(&e.invocation_path);
    assert!(!clone.change("install-src").exists(), "the source worktree is torn down on abort");
}