sheeter-engine 1.2.0

Convert, inspect, and transform data files across ten formats with streaming where it matters and auto-detection where it can.
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

use assert_cmd::Command;
use std::fs;
use tempfile::tempdir;

fn run(args: &[&str], input: &str, in_ext: &str, out_ext: &str) -> Result<String, String> {
    let dir = tempdir().unwrap();
    let inp = dir.path().join(format!("in.{in_ext}"));
    let out = dir.path().join(format!("out.{out_ext}"));
    fs::write(&inp, input).unwrap();
    let mut cmd = Command::cargo_bin("sheeter").unwrap();
    cmd.args(args);
    cmd.arg(inp.to_str().unwrap());
    cmd.arg(out.to_str().unwrap());
    let result = cmd.output().unwrap();
    if !result.status.success() {
        return Err(String::from_utf8_lossy(&result.stderr).to_string());
    }
    Ok(fs::read_to_string(out).unwrap())
}

#[test]
fn sql_insert_to_csv() {
    let sql = "CREATE TABLE pokemon (id INTEGER, name TEXT);\nINSERT INTO pokemon (id, name) VALUES (1, 'Bulbasaur'), (2, 'Ivysaur');";
    let csv = run(
        &["convert", "--from", "sql", "--to", "csv"],
        sql,
        "sql",
        "csv",
    )
    .unwrap();
    assert_eq!(csv, "id,name\n1,Bulbasaur\n2,Ivysaur\n");
}

#[test]
fn sql_without_create_table_uses_column_names() {
    let sql = "INSERT INTO t (a, b) VALUES (1, 'x');";
    let json = run(
        &["convert", "--from", "sql", "--to", "json"],
        sql,
        "sql",
        "json",
    )
    .unwrap();
    assert!(json.contains(r#""a":1"#), "column names: {json}");
    assert!(json.contains(r#""b":"x""#), "column names: {json}");
}

#[test]
fn sql_null_and_boolean() {
    let sql = "INSERT INTO t (a, b, c) VALUES (NULL, TRUE, 1.5);";
    let json = run(
        &["convert", "--from", "sql", "--to", "json"],
        sql,
        "sql",
        "json",
    )
    .unwrap();
    assert!(json.contains("null"), "null: {json}");
    assert!(json.contains("true"), "bool: {json}");
    assert!(json.contains("1.5"), "float: {json}");
}

#[test]
fn csv_to_sql_derives_table_from_filename() {
    let dir = tempdir().unwrap();
    let inp = dir.path().join("in.csv");
    let out = dir.path().join("users.sql");
    fs::write(&inp, "id,name\n1,Alice\n2,Bob\n").unwrap();
    Command::cargo_bin("sheeter")
        .unwrap()
        .args([
            "convert",
            "--from",
            "csv",
            "--to",
            "sql",
            inp.to_str().unwrap(),
            out.to_str().unwrap(),
        ])
        .assert()
        .success();
    let sql = fs::read_to_string(out).unwrap();
    assert!(
        sql.contains(r#"INSERT INTO "users""#),
        "table from filename: {sql}"
    );
    assert!(sql.contains("'Alice'"), "values: {sql}");
}

#[test]
fn sql_escapes_single_quotes() {
    let sql = "INSERT INTO t (name) VALUES ('O''Brien');";
    let json = run(
        &["convert", "--from", "sql", "--to", "json"],
        sql,
        "sql",
        "json",
    )
    .unwrap();
    assert!(json.contains("O'Brien"), "escaped quote: {json}");
}

#[test]
fn sql_multi_table_to_csv_n_outputs() {
    let dir = tempdir().unwrap();
    let inp = dir.path().join("in.sql");
    let out = dir.path().join("out.csv");
    fs::write(
        &inp,
        "INSERT INTO users (id) VALUES (1);\nINSERT INTO orders (id) VALUES (2);\n",
    )
    .unwrap();
    Command::cargo_bin("sheeter")
        .unwrap()
        .args([
            "convert",
            "--from",
            "sql",
            "--to",
            "csv",
            inp.to_str().unwrap(),
            out.to_str().unwrap(),
        ])
        .assert()
        .success();
    assert!(dir.path().join("out.users.csv").exists());
    assert!(dir.path().join("out.orders.csv").exists());
}

#[test]
fn dialect_flag_accepted() {
    let sql = "INSERT INTO t (a) VALUES (1);";
    let json = run(
        &[
            "convert",
            "--from",
            "sql",
            "--to",
            "json",
            "--dialect",
            "postgresql",
        ],
        sql,
        "sql",
        "json",
    )
    .unwrap();
    assert!(json.contains("\"a\":1"));
}

#[test]
fn select_without_insert_errors() {
    let sql = "SELECT 1;";
    let err = run(
        &["convert", "--from", "sql", "--to", "json"],
        sql,
        "sql",
        "json",
    )
    .unwrap_err();
    assert!(
        err.contains("INSERT") || err.contains("no INSERT"),
        "expected no-data error: {err}"
    );
}