clipv 0.4.0

Command line interpretor parser (and future validator)
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
166
167
168
169

// Copyright © 2024 Claire Bts
//
// This file is part of CLIP
//
// CLIP is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
//
// CLIP is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.

#[cfg(feature = "derive")]
mod test {
use clipv::parser::{Parsed, ParsingError, TryParse};
use clipv::{FromStr, TryParse};

#[derive(Debug, PartialEq, TryParse)]
struct Empty;

#[derive(Debug, PartialEq, FromStr)]
enum Unit {
    One,
    Two,
    Three,
}

#[derive(Debug, PartialEq, TryParse)]
struct Leaf {
    a: u8,
    b: String,
}

#[derive(Debug, PartialEq, TryParse)]
enum Command {
    Tuple(u8, #[try_parse] Leaf),
    Struct { unit: Unit, other: u8 },
    Unit,
}
#[derive(Debug, PartialEq, TryParse)]
struct Parent {
    #[try_parse]
    parent_arg: Leaf,
    #[try_parse]
    command: Command,
}

#[test]
fn it_parses_a_simple_struct() {
    let arguments = ["32", "Hello, world"];
    let result = Leaf::try_parse(arguments.iter());
    assert!(result.is_ok());
    assert_eq!(
        result.unwrap().0,
        Leaf {
            a: 32,
            b: String::from("Hello, world")
        }
    );
}

#[test]
fn it_should_raise_too_few_argument() {
    let arguments = ["32"];
    let result = Leaf::try_parse(arguments.iter());
    assert_eq!(result.err(), Some(ParsingError::TooFewArguments));
}

#[test]
fn it_should_raise_bad_argument_type() {
    let arguments = ["", "Hello, world"];
    let result = Leaf::try_parse(arguments.iter());
    assert_eq!(result.err(), Some(ParsingError::BadType));
}

#[test]
fn it_should_parse_the_enumeration_group() {
    {
        let arguments = ["tuple", "32", "32", "Hello, world", "following"];
        let result = Command::try_parse(arguments.iter());
        assert!(result.is_ok());
        let Parsed(parsed, mut rest) = result.ok().unwrap();
        assert_eq!(
            parsed,
            Command::Tuple(
                32,
                Leaf {
                    a: 32,
                    b: String::from("Hello, world")
                }
            )
        );
        assert_eq!(rest.next(), Some("following").as_ref());
    }
    {
        let arguments = ["struct", "three", "42"];
        let result = Command::try_parse(arguments.iter());
        assert!(result.is_ok());
        let Parsed(parsed, _) = result.ok().unwrap();
        assert_eq!(
            parsed,
            Command::Struct {
                unit: Unit::Three,
                other: 42
            }
        );
    }
    {
        let arguments = ["unit"];
        let result = Command::try_parse(arguments.iter());
        assert!(result.is_ok());
        let Parsed(parsed, _) = result.ok().unwrap();
        assert_eq!(parsed, Command::Unit);
    }
}

#[test]
fn it_should_raise_variant_not_found_command() {
    let arguments = ["unexistant"];
    let result = Command::try_parse(arguments.iter());
    assert_eq!(result.err(), Some(ParsingError::VariantNotFound));
}

#[test]
fn it_should_raise_too_few_argument_command() {
    {
        let arguments = ["tuple"];
        let result = Command::try_parse(arguments.iter());
        assert_eq!(result.err(), Some(ParsingError::TooFewArguments));
    }
    {
        let arguments: [&'static str; 0] = [];
        let result = Command::try_parse(arguments.iter());
        assert_eq!(result.err(), Some(ParsingError::TooFewArguments));
    }
}

#[test]
fn it_should_raise_bad_argument_type_command() {
    let arguments = ["tuple", "test", "43", "Hello"];
    assert_eq!(
        Command::try_parse(arguments.iter()).err(),
        Some(ParsingError::BadType)
    );
}

#[test]
fn it_should_parse_the_parent() {
    let arguments = ["42", "Thank", "tuple", "32", "32", "Hello, world", "end"];
    let result = Parent::try_parse(arguments.iter());
    assert!(result.is_ok());
    let Parsed(parsed, mut rest) = result.unwrap();
    assert_eq!(
        parsed,
        Parent {
            parent_arg: Leaf {
                a: 42,
                b: String::from("Thank")
            },
            command: Command::Tuple(
                32,
                Leaf {
                    a: 32,
                    b: String::from("Hello, world")
                }
            )
        }
    );
    assert_eq!(rest.next(), Some("end").as_ref());
}
}