nt-time 0.15.0

A Windows file time library
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
170
171
172
173
174
175
176
177
178
179
180
181

// SPDX-FileCopyrightText: 2023 Shun Sakai
//
// SPDX-License-Identifier: Apache-2.0 OR MIT

//! Utilities for parsing a [`FileTime`] from a string.

use core::str::FromStr;

use super::FileTime;
use crate::error::ParseFileTimeError;

impl FromStr for FileTime {
    type Err = ParseFileTimeError;

    fn from_str(src: &str) -> Result<Self, Self::Err> {
        let ft = src.parse().map_err(ParseFileTimeError::new)?;
        Ok(Self::new(ft))
    }
}

#[cfg(test)]
mod tests {
    use core::{
        error::Error,
        num::{IntErrorKind, ParseIntError},
    };
    #[cfg(feature = "std")]
    use std::string::String;

    #[cfg(feature = "std")]
    use proptest::{prop_assert, prop_assert_eq};
    #[cfg(feature = "std")]
    use test_strategy::proptest;

    use super::*;

    #[test]
    fn from_str() {
        assert_eq!(FileTime::from_str("0").unwrap(), FileTime::NT_TIME_EPOCH);
        assert_eq!(FileTime::from_str("+0").unwrap(), FileTime::NT_TIME_EPOCH);
        assert_eq!(
            FileTime::from_str("116444736000000000").unwrap(),
            FileTime::UNIX_EPOCH
        );
        assert_eq!(
            FileTime::from_str("+116444736000000000").unwrap(),
            FileTime::UNIX_EPOCH
        );
        assert_eq!(
            FileTime::from_str("9223372036854775807").unwrap(),
            FileTime::SIGNED_MAX
        );
        assert_eq!(
            FileTime::from_str("+9223372036854775807").unwrap(),
            FileTime::SIGNED_MAX
        );
        assert_eq!(
            FileTime::from_str("18446744073709551615").unwrap(),
            FileTime::MAX
        );
        assert_eq!(
            FileTime::from_str("+18446744073709551615").unwrap(),
            FileTime::MAX
        );
    }

    #[cfg(feature = "std")]
    #[proptest]
    fn from_str_roundtrip(#[strategy(r"\+?[0-9]{1,19}")] s: String) {
        let ft = s.parse().unwrap();
        prop_assert_eq!(FileTime::from_str(&s).unwrap(), FileTime::new(ft));
    }

    #[test]
    fn from_str_when_empty() {
        assert_eq!(
            FileTime::from_str("")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::Empty
        );
    }

    #[test]
    fn from_str_with_invalid_digit() {
        assert_eq!(
            FileTime::from_str("a")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
        assert_eq!(
            FileTime::from_str("_")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
        assert_eq!(
            FileTime::from_str("-1")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
        assert_eq!(
            FileTime::from_str("+")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
        assert_eq!(
            FileTime::from_str("-")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
        assert_eq!(
            FileTime::from_str(" 0")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
        assert_eq!(
            FileTime::from_str("0 ")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::InvalidDigit
        );
    }

    #[cfg(feature = "std")]
    #[proptest]
    fn from_str_with_invalid_digit_roundtrip(#[strategy(r"-[0-9]+|[^0-9]+")] s: String) {
        prop_assert!(FileTime::from_str(&s).is_err());
    }

    #[test]
    fn from_str_when_positive_overflow() {
        assert_eq!(
            FileTime::from_str("18446744073709551616")
                .unwrap_err()
                .source()
                .unwrap()
                .downcast_ref::<ParseIntError>()
                .unwrap()
                .kind(),
            &IntErrorKind::PosOverflow
        );
    }
}