abcop 0.18.2

Must-have ABC complexity gate for AI development. Ruby, Rust, Python, Go, JS/TS, C/C++, PHP, Java, C#, Swift, Zig, Dart, Solidity, Haskell, ObjC
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

//! Filesystem-backed pipeline contracts: cache narrowing and ModuleAbcSize
//! on on-disk Ruby fixtures.

use super::analyze_one;
use super::narrow::apply;
use crate::abc::Limits;
use crate::git_changes::{Changeset, Lines};
use crate::modulesize;
use crate::output::FileResult;
use std::collections::BTreeMap;

fn test_limits() -> Limits {
    Limits {
        method: 17.0,
        module: modulesize::MAX_ABC,
    }
}

/// A 60-function Ruby fixture under `dir/rel` with `template` bodies.
fn filler_ruby_file(
    dir: &std::path::Path,
    rel: &str,
    template: &str,
) -> (std::path::PathBuf, String) {
    let _ = std::fs::remove_dir_all(dir);
    std::fs::create_dir_all(dir.join(rel).parent().unwrap()).unwrap();
    let file = dir.join(rel);
    let mut src = String::new();
    for i in 1..=60 {
        src.push_str(&template.replace("{i}", &i.to_string()));
    }
    std::fs::write(&file, &src).unwrap();
    (file, src)
}

fn scoped_changeset(root: &std::path::Path, rel: &str, hi: usize) -> Changeset {
    Changeset {
        root: root.display().to_string(),
        files: BTreeMap::from([(rel.to_string(), Lines::Ranges((1..=hi).collect()))]),
    }
}

/// Regression fixture paths: a warm-cache hit used to skip narrowing.
fn narrow_paths() -> (std::path::PathBuf, std::path::PathBuf, &'static str) {
    let dir = std::env::temp_dir().join(format!("abcop_pipeline_narrow_{}", std::process::id()));
    let rel = "app/models_big.rb";
    let (file, _) = filler_ruby_file(
        &dir,
        rel,
        "def filler_{i}\n  x_{i} = 1\n  unused_{i} = 2\nend\n\n",
    );
    (dir, file, rel)
}

#[test]
fn cache_hits_are_scope_narrowed_like_fresh_analysis() {
    let (dir, file, rel) = narrow_paths();
    let cs = scoped_changeset(&dir, rel, 2);
    let first = assert_fresh_unflagged(&file, &cs);
    let second = warm_narrowed(&file, &cs, &dir.join(".cache"));
    assert_same_diagnostics(&first, &second);
    assert_eq!(second.module_abc, None, "cache hit must stay narrowed");
    let _ = std::fs::remove_dir_all(&dir);
}

fn warm_narrowed(
    file: &std::path::Path,
    cs: &Changeset,
    cache_dir: &std::path::Path,
) -> FileResult {
    let cache = crate::cache::Cache::open_at(cache_dir).expect("cache");
    let _ = analyze_one(file, None, test_limits(), Some(cs), Some(&cache));
    analyze_one(file, None, test_limits(), Some(cs), Some(&cache))
}

fn assert_same_diagnostics(a: &FileResult, b: &FileResult) {
    assert_eq!(a.abc, b.abc);
    assert_eq!(a.used_once, b.used_once);
    assert_eq!(a.never_used, b.never_used);
}

/// Fresh analysis path for the fixture: a 3-line diff must not flag size.
fn assert_fresh_unflagged(file: &std::path::Path, cs: &Changeset) -> FileResult {
    let r = analyze_one(file, None, test_limits(), Some(cs), None);
    assert_eq!(r.module_abc, None, "3-line diff must not flag size");
    r
}

/// Dense method bodies so many changed methods sum past ModuleAbcSize.
fn dense_ruby_template() -> &'static str {
    "def fill_{i}\n  a = 1\n  b = 2\n  c = 3\n  d = 4\n  e = 5\n  \
     f = 6\n  g = 7\n  h = 8\n  i = 9\n  j = 10\n  \
     return a + b + c + d + e + f + g + h + i + j if a > 0 && b > 0\n  \
     foo(a, b, c, d, e, f, g, h, i, j)\nend\n\n"
}

/// A 60-test spec fixture plus its repo root.
fn spec_fixture(tag: &str) -> (std::path::PathBuf, std::path::PathBuf, String) {
    let dir = std::env::temp_dir().join(format!(
        "abcop_pipeline_specsize_{}_{}",
        std::process::id(),
        tag
    ));
    let (file, src) = filler_ruby_file(
        &dir,
        "test/commit_plan_finalize_test.rb",
        dense_ruby_template(),
    );
    (dir, file, src)
}

#[test]
fn small_spec_diff_keeps_module_quiet() {
    let (dir, file, src) = spec_fixture("small");
    let cs = scoped_changeset(&dir, "test/commit_plan_finalize_test.rb", 3);
    let mut r = analyze_one(&file, None, test_limits(), Some(&cs), None);
    apply(Some(&cs), &mut r, modulesize::MAX_ABC, src.as_bytes());
    assert_eq!(r.module_abc, None, "few changed methods stay under ceiling");

    let _ = std::fs::remove_dir_all(&dir);
}

#[test]
fn many_changed_spec_methods_are_size_accountable() {
    let (dir, file, src) = spec_fixture("big");
    let cs = scoped_changeset(&dir, "test/commit_plan_finalize_test.rb", 2000);
    let mut r = analyze_one(&file, None, test_limits(), Some(&cs), None);
    apply(Some(&cs), &mut r, modulesize::MAX_ABC, src.as_bytes());
    assert!(
        r.module_abc
            .as_ref()
            .is_some_and(|m| m.score > modulesize::MAX_ABC),
        "changed-method sum over ceiling must surface ModuleAbcSize, got {:?}",
        r.module_abc
    );

    let _ = std::fs::remove_dir_all(&dir);
}

#[test]
fn full_scan_drops_module_abc_on_test_trees() {
    let (dir, file, _) = spec_fixture("full");
    let r = analyze_one(&file, None, test_limits(), None, None);
    assert_eq!(
        r.module_abc, None,
        "full scans keep the test-tree exemption"
    );
    let _ = std::fs::remove_dir_all(&dir);
}