oxicode 0.2.2

A modern binary serialization library - successor to bincode
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

//! Tests for #[oxicode(flatten)] field attribute

#![allow(
    clippy::approx_constant,
    clippy::useless_vec,
    clippy::len_zero,
    clippy::unnecessary_cast,
    clippy::redundant_closure,
    clippy::too_many_arguments,
    clippy::type_complexity,
    clippy::needless_borrow,
    clippy::enum_variant_names,
    clippy::upper_case_acronyms,
    clippy::inconsistent_digit_grouping,
    clippy::unit_cmp,
    clippy::assertions_on_constants,
    clippy::iter_on_single_items,
    clippy::expect_fun_call,
    clippy::redundant_pattern_matching,
    variant_size_differences,
    clippy::absurd_extreme_comparisons,
    clippy::nonminimal_bool,
    clippy::for_kv_map,
    clippy::needless_range_loop,
    clippy::single_match,
    clippy::collapsible_if,
    clippy::needless_return,
    clippy::redundant_clone,
    clippy::map_entry,
    clippy::match_single_binding,
    clippy::bool_comparison,
    clippy::derivable_impls,
    clippy::manual_range_contains,
    clippy::needless_borrows_for_generic_args,
    clippy::manual_map,
    clippy::vec_init_then_push,
    clippy::identity_op,
    clippy::manual_flatten,
    clippy::single_char_pattern,
    clippy::search_is_some,
    clippy::option_map_unit_fn,
    clippy::while_let_on_iterator,
    clippy::clone_on_copy,
    clippy::box_collection,
    clippy::redundant_field_names,
    clippy::ptr_arg,
    clippy::large_enum_variant,
    clippy::match_ref_pats,
    clippy::needless_pass_by_value,
    clippy::unused_unit,
    clippy::let_and_return,
    clippy::suspicious_else_formatting,
    clippy::manual_strip,
    clippy::match_like_matches_macro,
    clippy::from_over_into,
    clippy::wrong_self_convention,
    clippy::inherent_to_string,
    clippy::new_without_default,
    clippy::unnecessary_wraps,
    clippy::field_reassign_with_default,
    clippy::manual_find,
    clippy::unnecessary_lazy_evaluations,
    clippy::should_implement_trait,
    clippy::missing_safety_doc,
    clippy::unusual_byte_groupings,
    clippy::bool_assert_comparison,
    clippy::zero_prefixed_literal,
    clippy::await_holding_lock,
    clippy::manual_saturating_arithmetic,
    clippy::explicit_counter_loop,
    clippy::needless_lifetimes,
    clippy::single_component_path_imports,
    clippy::uninlined_format_args,
    clippy::iter_cloned_collect,
    clippy::manual_str_repeat,
    clippy::excessive_precision,
    clippy::precedence,
    clippy::unnecessary_literal_unwrap
)]
use oxicode::{decode_from_slice, encode_to_vec, Decode, Encode};

#[test]
fn test_flatten_basic() {
    #[derive(Debug, PartialEq, Encode, Decode)]
    struct Inner {
        x: u32,
        y: u32,
    }

    #[derive(Debug, PartialEq, Encode, Decode)]
    struct Outer {
        #[oxicode(flatten)]
        inner: Inner,
        z: u32,
    }

    let value = Outer {
        inner: Inner { x: 1, y: 2 },
        z: 3,
    };
    let encoded = encode_to_vec(&value).expect("encode");
    let (decoded, _): (Outer, _) = decode_from_slice(&encoded).expect("decode");
    assert_eq!(value, decoded);

    // Verify that flatten is binary-compatible with encoding Inner's fields directly
    #[derive(Debug, PartialEq, Encode, Decode)]
    struct Flat {
        x: u32,
        y: u32,
        z: u32,
    }
    let flat = Flat { x: 1, y: 2, z: 3 };
    let flat_encoded = encode_to_vec(&flat).expect("encode flat");
    assert_eq!(
        encoded, flat_encoded,
        "flatten should produce identical bytes to manually flattened struct"
    );
}

#[test]
fn test_flatten_with_skip() {
    #[derive(Debug, PartialEq, Encode, Decode)]
    struct Meta {
        id: u64,
    }

    #[derive(Debug, PartialEq, Encode, Decode)]
    struct Record {
        #[oxicode(flatten)]
        meta: Meta,
        #[oxicode(skip)]
        cached: String,
        value: f64,
    }

    let record = Record {
        meta: Meta { id: 42 },
        cached: "ignored".to_string(),
        value: 3.14,
    };
    let encoded = encode_to_vec(&record).expect("encode");
    let (decoded, _): (Record, _) = decode_from_slice(&encoded).expect("decode");
    assert_eq!(record.meta, decoded.meta);
    assert_eq!(record.value, decoded.value);
    assert_eq!(decoded.cached, String::default()); // skip restores to Default
}