mocktail 0.3.2

HTTP & gRPC server mocking for Rust
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

#![allow(dead_code)]
use std::collections::{vec_deque, VecDeque};

use bytes::{Buf, BufMut, Bytes, BytesMut};

#[derive(Default, Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
pub struct BufList {
    bufs: VecDeque<Bytes>,
}

impl BufList {
    pub fn new() -> Self {
        Self::default()
    }

    pub fn is_empty(&self) -> bool {
        self.bufs.is_empty()
    }

    pub fn len(&self) -> usize {
        self.bufs.len()
    }

    pub fn push(&mut self, buf: Bytes) {
        self.bufs.push_back(buf);
    }

    pub fn pop(&mut self) -> Option<Bytes> {
        self.bufs.pop_front()
    }

    pub fn as_bytes(&mut self) -> Bytes {
        self.copy_to_bytes(self.remaining())
    }

    pub fn iter(&self) -> vec_deque::Iter<'_, Bytes> {
        self.bufs.iter()
    }
}

impl Buf for BufList {
    fn remaining(&self) -> usize {
        self.bufs.iter().map(|buf| buf.remaining()).sum()
    }

    fn chunk(&self) -> &[u8] {
        self.bufs.front().map(Buf::chunk).unwrap_or_default()
    }

    fn advance(&mut self, mut cnt: usize) {
        while cnt > 0 {
            let front = &mut self.bufs[0];
            let rem = front.remaining();
            if rem > cnt {
                front.advance(cnt);
                return;
            } else {
                front.advance(rem);
                cnt -= rem;
            }
            self.bufs.pop_front();
        }
    }

    fn chunks_vectored<'a>(&'a self, dst: &mut [std::io::IoSlice<'a>]) -> usize {
        if dst.is_empty() {
            return 0;
        }
        let mut vecs = 0;
        for buf in &self.bufs {
            vecs += buf.chunks_vectored(&mut dst[vecs..]);
            if vecs == dst.len() {
                break;
            }
        }
        vecs
    }

    fn copy_to_bytes(&mut self, len: usize) -> Bytes {
        match self.bufs.front_mut() {
            Some(front) if front.remaining() == len => {
                let b = front.copy_to_bytes(len);
                self.bufs.pop_front();
                b
            }
            Some(front) if front.remaining() > len => front.copy_to_bytes(len),
            _ => {
                let rem = self.remaining();
                let mut buf = BytesMut::with_capacity(len);
                if rem == len {
                    buf.put(self);
                } else {
                    buf.put(self.take(len));
                }
                buf.freeze()
            }
        }
    }
}

impl IntoIterator for BufList {
    type Item = Bytes;

    type IntoIter = vec_deque::IntoIter<Self::Item>;

    fn into_iter(self) -> Self::IntoIter {
        self.bufs.into_iter()
    }
}

impl FromIterator<Bytes> for BufList {
    fn from_iter<T: IntoIterator<Item = Bytes>>(iter: T) -> Self {
        let bufs = iter.into_iter().collect::<VecDeque<_>>();
        Self { bufs }
    }
}

impl From<Bytes> for BufList {
    fn from(value: Bytes) -> Self {
        let mut bufs = BufList::new();
        bufs.push(value);
        bufs
    }
}

impl From<Vec<u8>> for BufList {
    fn from(value: Vec<u8>) -> Self {
        let mut bufs = BufList::new();
        bufs.push(value.into());
        bufs
    }
}