fallow-core 3.3.0

Internal detector backend for fallow-engine and fallow-api
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

use super::common::{create_config, fixture_path};

#[test]
fn three_level_star_chain_used_exports_propagate() {
    let root = fixture_path("re-export-chains");
    let config = create_config(root);
    let results = fallow_core::analyze(&config).expect("analysis should succeed");

    let unused_export_names: Vec<&str> = results
        .unused_exports
        .iter()
        .map(|e| e.export.export_name.as_str())
        .collect();

    assert!(
        !unused_export_names.contains(&"alpha"),
        "alpha should propagate through 3-level star chain, found: {unused_export_names:?}"
    );
    assert!(
        !unused_export_names.contains(&"beta"),
        "beta should propagate through 3-level star chain, found: {unused_export_names:?}"
    );
}

#[test]
fn three_level_star_chain_unused_exports_detected() {
    let root = fixture_path("re-export-chains");
    let config = create_config(root);
    let results = fallow_core::analyze(&config).expect("analysis should succeed");

    let unused_export_names: Vec<&str> = results
        .unused_exports
        .iter()
        .map(|e| e.export.export_name.as_str())
        .collect();

    assert!(
        unused_export_names.contains(&"gamma"),
        "gamma should be unused (not imported), found: {unused_export_names:?}"
    );
    assert!(
        unused_export_names.contains(&"delta"),
        "delta should be unused (not imported), found: {unused_export_names:?}"
    );
}

#[test]
fn three_level_star_chain_no_unused_files() {
    let root = fixture_path("re-export-chains");
    let config = create_config(root);
    let results = fallow_core::analyze(&config).expect("analysis should succeed");

    assert!(
        results.unused_files.is_empty(),
        "no files should be unused in re-export chain fixture, found: {:?}",
        results
            .unused_files
            .iter()
            .map(|f| &f.file.path)
            .collect::<Vec<_>>()
    );
}

#[test]
fn issue_1373_merged_namespace_value_import_through_star_barrel_is_used() {
    let root = fixture_path("issue-1373-merged-namespace-star-reexport");
    let config = create_config(root);
    let results = fallow_core::analyze(&config).expect("analysis should succeed");

    let unused_export_names: Vec<&str> = results
        .unused_exports
        .iter()
        .map(|e| e.export.export_name.as_str())
        .collect();
    let unused_type_names: Vec<&str> = results
        .unused_types
        .iter()
        .map(|e| e.export.export_name.as_str())
        .collect();

    assert!(
        !unused_export_names.contains(&"Merged"),
        "Merged value import should be credited through the star barrel, found: {unused_export_names:?}"
    );
    assert!(
        unused_type_names.contains(&"Merged"),
        "value-only usage should not credit the type-only namespace, found: {unused_type_names:?}"
    );
    assert!(
        unused_export_names.contains(&"unusedControl"),
        "unrelated value exports should remain reportable, found: {unused_export_names:?}"
    );

    assert!(
        results
            .duplicate_exports
            .iter()
            .all(|duplicate| duplicate.export.export_name != "Merged"),
        "Merged should not become ambiguous while flowing through the star barrel"
    );
}