girt 0.18.0

An incremental, idiomatic Rust implementation of Git
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

//! Controlled graph construction leaves publication to the caller.
use std::sync::atomic::AtomicBool;

use girt::commit_graph::{CommitGraph, GraphWriteError};
use girt::{HistoryLimits, InitKind, ObjectFormat, Repository};

#[test]
fn pre_cancelled_build_refuses_before_inspecting_roots() {
    let directory = tempfile::tempdir().unwrap();
    let repository = Repository::init(
        ObjectFormat::Sha1,
        directory.path().join("r"),
        InitKind::Bare,
    )
    .unwrap();
    let objects = repository.objects().unwrap();
    let absent = girt::ObjectId::for_blob(ObjectFormat::Sha1, b"missing");
    assert!(matches!(
        CommitGraph::from_objects_controlled(
            &objects,
            &[absent],
            HistoryLimits::default(),
            &AtomicBool::new(true)
        ),
        Err(GraphWriteError::Cancelled)
    ));
    assert!(!repository.object_dir().join("info/commit-graph").exists());
}

#[test]
fn uncancelled_empty_graph_matches_existing_constructor() {
    for format in [ObjectFormat::Sha1, ObjectFormat::Sha256] {
        let directory = tempfile::tempdir().unwrap();
        let repository =
            Repository::init(format, directory.path().join("r"), InitKind::Bare).unwrap();
        let objects = repository.objects().unwrap();
        let old = CommitGraph::from_objects_with(&objects, &[], HistoryLimits::default()).unwrap();
        let controlled = CommitGraph::from_objects_controlled(
            &objects,
            &[],
            HistoryLimits::default(),
            &AtomicBool::new(false),
        )
        .unwrap();
        assert_eq!(old.encode().unwrap(), controlled.encode().unwrap());
    }
}

#[test]
fn commit_limit_still_refuses_without_publication() {
    let directory = tempfile::tempdir().unwrap();
    let repository = Repository::init(
        ObjectFormat::Sha1,
        directory.path().join("r"),
        InitKind::Bare,
    )
    .unwrap();
    let objects = repository.objects().unwrap();
    let absent = girt::ObjectId::for_blob(ObjectFormat::Sha1, b"missing");
    let limits = HistoryLimits::default().with_max_commits(0);
    assert!(matches!(
        CommitGraph::from_objects_controlled(&objects, &[absent], limits, &AtomicBool::new(false)),
        Err(GraphWriteError::History(_))
    ));
    assert!(!repository.object_dir().join("info/commit-graph").exists());
}

#[path = "support/maintenance_git.rs"]
mod maintenance_git;

#[test]
fn nonempty_controlled_graph_matches_existing_and_git_in_both_formats() {
    use girt::ReadLimits;
    use girt::commit_graph::GraphWriteMode;
    for (format, name) in [
        (ObjectFormat::Sha1, "sha1"),
        (ObjectFormat::Sha256, "sha256"),
    ] {
        let directory = tempfile::tempdir().unwrap();
        let root = directory.path();
        maintenance_git::git(
            root,
            &[
                "init",
                "--bare",
                "--template=",
                "--ref-format=files",
                "--object-format",
                name,
                "-q",
            ],
            b"",
        );
        let tree = String::from_utf8(maintenance_git::git(root, &["mktree"], b"")).unwrap();
        let first = String::from_utf8(maintenance_git::git(
            root,
            &["commit-tree", tree.trim()],
            b"first\n",
        ))
        .unwrap();
        let second = String::from_utf8(maintenance_git::git(
            root,
            &["commit-tree", tree.trim(), "-p", first.trim()],
            b"second\n",
        ))
        .unwrap();
        maintenance_git::git(root, &["update-ref", "refs/heads/main", second.trim()], b"");
        let tip = girt::ObjectId::from_hex(format, second.trim()).unwrap();
        let repository = Repository::open(root).unwrap();
        let objects = repository.objects().unwrap();
        let cancel = AtomicBool::new(false);
        let old =
            CommitGraph::from_objects_with(&objects, &[tip], HistoryLimits::default()).unwrap();
        let controlled = CommitGraph::from_objects_controlled(
            &objects,
            &[tip],
            HistoryLimits::default(),
            &cancel,
        )
        .unwrap();
        assert_eq!(old.encode().unwrap(), controlled.encode().unwrap());
        let limits =
            HistoryLimits::default().with_read(ReadLimits::default().with_max_object_bytes(1));
        assert!(matches!(
            CommitGraph::from_objects_controlled(&objects, &[tip], limits, &cancel),
            Err(GraphWriteError::Read { .. })
        ));
        controlled
            .install(repository.object_dir(), GraphWriteMode::Full)
            .unwrap();
        maintenance_git::git(root, &["commit-graph", "verify"], b"");
        maintenance_git::git(root, &["fsck", "--strict"], b"");
    }
}