code-dupes 0.2.1

A multi-language CLI tool that detects duplicate and near-duplicate code blocks using AST normalization
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

mod common;

use common::{code_dupes, fixture_path};
use predicates::prelude::*;

#[test]
fn min_nodes_option() {
    code_dupes()
        .args([
            "--path",
            fixture_path("exact_dupes").to_str().unwrap(),
            "--min-nodes",
            "1000",
            "stats",
        ])
        .assert()
        .success()
        .stdout(predicate::str::contains("Exact duplicates: 0 groups"));
}

#[test]
fn min_lines_option() {
    code_dupes()
        .args([
            "--path",
            fixture_path("exact_dupes").to_str().unwrap(),
            "--min-lines",
            "1000",
            "stats",
        ])
        .assert()
        .success()
        .stdout(predicate::str::contains("Exact duplicates: 0 groups"));
}

#[test]
fn exclude_option() {
    code_dupes()
        .args([
            "--path",
            fixture_path("exact_dupes").to_str().unwrap(),
            "--exclude",
            "lib.rs",
            "stats",
        ])
        .assert()
        .code(2)
        .stderr(predicate::str::contains("No source files"));
}

#[test]
fn exclude_tests_flag_reduces_duplicates() {
    let output_all = code_dupes()
        .args([
            "--path",
            fixture_path("test_code").to_str().unwrap(),
            "--format",
            "json",
            "stats",
        ])
        .assert()
        .success()
        .get_output()
        .stdout
        .clone();
    let all: serde_json::Value =
        serde_json::from_str(&String::from_utf8(output_all).unwrap()).unwrap();
    assert_eq!(all["exact_duplicate_units"].as_u64().unwrap(), 3);

    let output_excl = code_dupes()
        .args([
            "--path",
            fixture_path("test_code").to_str().unwrap(),
            "--exclude-tests",
            "--format",
            "json",
            "stats",
        ])
        .assert()
        .success()
        .get_output()
        .stdout
        .clone();
    let excl: serde_json::Value =
        serde_json::from_str(&String::from_utf8(output_excl).unwrap()).unwrap();
    assert_eq!(excl["exact_duplicate_units"].as_u64().unwrap(), 2);
    assert_eq!(excl["total_code_units"].as_u64().unwrap(), 2);
}

#[test]
fn exclude_tests_text_report() {
    code_dupes()
        .args([
            "--path",
            fixture_path("test_code").to_str().unwrap(),
            "--exclude-tests",
            "report",
        ])
        .assert()
        .success()
        .stdout(predicate::str::contains("Exact Duplicates"))
        .stdout(predicate::str::contains("Group 1"));
}

#[test]
fn error_on_nonexistent_path() {
    code_dupes()
        .args(["--path", "/nonexistent/path/that/does/not/exist", "stats"])
        .assert()
        .code(2)
        .stderr(predicate::str::contains("No recognized source files"));
}

#[test]
fn help_works() {
    code_dupes()
        .arg("--help")
        .assert()
        .success()
        .stdout(predicate::str::contains("Detect duplicate code"));
}