generic-vec 0.1.2

a vector implementation that can be used in `no_std` envioronments
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

// use std::string::ToString;

#[test]
fn raw_drain_front() {
    let output = mockalloc::record_allocs(|| {
        new_vec!(mut vec, max(8));

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_front(), "0");
            assert_eq!(drain.take_front(), "2");
            assert_eq!(drain.take_front(), "1");
        }

        assert_eq!(vec, []);

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_front(), "0");
            assert_eq!(drain.take_front(), "2");
        }

        assert_eq!(vec, S!([1]));

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_front(), "1");
            drain.skip_front();
            assert_eq!(drain.take_front(), "2");
        }

        assert_eq!(vec, S!([0, 1]));

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_front(), "0");
        }

        assert_eq!(vec, S!([1, 0, 2, 1]))
    });

    assert_eq!(output.mem_allocated(), output.mem_freed() + leak!(raw_drain_front));
}

#[test]
fn raw_drain_back() {
    let output = mockalloc::record_allocs(|| {
        new_vec!(mut vec, max(8));

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_back(), "1");
            assert_eq!(drain.take_back(), "2");
            assert_eq!(drain.take_back(), "0");
        }

        assert_eq!(vec, []);

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_back(), "1");
            assert_eq!(drain.take_back(), "2");
        }

        assert_eq!(vec, S!([0]));

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_back(), "1");
            drain.skip_back();
            assert_eq!(drain.take_back(), "0");
        }

        assert_eq!(vec, S!([0, 2]));

        vec.push(S!("0"));
        vec.push(S!("2"));
        vec.push(S!("1"));

        {
            let mut drain = vec.cursor(..);

            assert_eq!(drain.take_back(), "1");
        }

        assert_eq!(vec, S!([0, 2, 0, 2]))
    });

    assert_eq!(output.mem_allocated(), output.mem_freed() + leak!(raw_drain_back));
}