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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
//! Struct size regression guard.
//!
//! Asserts that key identifier newtypes stay within expected memory bounds.
//! These sizes are recorded at the time they were designed and serve as a
//! regression guard against accidental bloat from future field additions.
//!
//! **Platform note**: sizes are for 64-bit targets (pointer width = 8 bytes).
//! On 32-bit targets the tests are skipped via `#[cfg(target_pointer_width = "64")]`.
#[cfg(target_pointer_width = "64")]
mod identifier_sizes {
use rubo4e::identifiers::*;
use std::mem::size_of;
/// All identifier newtypes are a single `Box<str>` = 2 × pointer = 16 bytes.
const BOX_STR: usize = 16;
#[test]
fn malo_id_size() {
assert_eq!(size_of::<MaloId>(), BOX_STR, "MaloId should be 16 bytes");
}
#[test]
fn melo_id_size() {
assert_eq!(size_of::<MeloId>(), BOX_STR, "MeloId should be 16 bytes");
}
#[test]
fn nelo_id_size() {
assert_eq!(size_of::<NeloId>(), BOX_STR, "NeloId should be 16 bytes");
}
#[test]
fn sr_id_size() {
assert_eq!(size_of::<SrId>(), BOX_STR, "SrId should be 16 bytes");
}
#[test]
fn tr_id_size() {
assert_eq!(size_of::<TrId>(), BOX_STR, "TrId should be 16 bytes");
}
#[test]
fn eic_code_size() {
assert_eq!(size_of::<EicCode>(), BOX_STR, "EicCode should be 16 bytes");
}
/// `ObisCode` is the one identifier that is not *just* a `Box<str>`: it also
/// caches its parsed value groups so `components()` is infallible and free
/// rather than re-parsing (and re-allocating) on every call.
///
/// The six value groups are octets per IEC 62056-61, so they cost 10 bytes —
/// four `Option<u8>` at 2 bytes plus two bare `u8`. `Box<str>` fills all 16 of
/// its bytes and forces 8-byte alignment, so 16 + 10 rounds up to 32.
///
/// Widening any value group back to `u32` would push this to 40; that is what
/// this guard is here to catch.
#[test]
fn obis_code_size() {
assert_eq!(
size_of::<ObisComponents>(),
10,
"OBIS value groups are octets — this should not grow"
);
assert_eq!(
size_of::<ObisCode>(),
32,
"ObisCode is a Box<str> plus its cached value groups"
);
}
#[test]
fn marktpartner_id_size() {
assert_eq!(
size_of::<MarktpartnerId>(),
BOX_STR,
"MarktpartnerId should be 16 bytes"
);
}
#[test]
fn bilanzkreis_id_size() {
assert_eq!(
size_of::<BilanzkreisId>(),
BOX_STR,
"BilanzkreisId should be 16 bytes"
);
}
#[test]
fn akiv_id_size() {
assert_eq!(size_of::<AkivId>(), BOX_STR, "AkivId should be 16 bytes");
}
#[test]
fn tranchennummer_id_size() {
assert_eq!(
size_of::<TranchennummerId>(),
BOX_STR,
"TranchennummerId should be 16 bytes"
);
}
}
#[cfg(all(target_pointer_width = "64", feature = "versioned", feature = "serde"))]
mod generated_type_sizes {
use rubo4e::v202607::*;
use std::mem::size_of;
/// `BoTyp` is a fieldless repr(u8) enum — 1 byte on its own, but alignment
/// may round up in structs. As a standalone type it is exactly 1 byte.
#[test]
fn bo_typ_size() {
assert_eq!(
size_of::<BoTyp>(),
1,
"BoTyp is a fieldless enum and should be 1 byte"
);
}
/// `Option<BoTyp>` should be 1 byte via niche optimisation.
#[test]
fn option_bo_typ_size() {
// repr(u8) fieldless enums get None-niche from the extra discriminant value.
// In practice this is 1 byte on stable Rust.
assert!(
size_of::<Option<BoTyp>>() <= 2,
"Option<BoTyp> should fit in 2 bytes (niche opt), got {}",
size_of::<Option<BoTyp>>()
);
}
}
/// Every identifier must expose the *same* conversion surface.
///
/// They all share one macro-generated implementation; this asserts it, so a
/// hand-written type cannot ship with a smaller API than its siblings.
mod uniform_trait_surface {
use rubo4e::identifiers::*;
use std::borrow::Borrow;
use std::str::FromStr;
/// Fails to compile if `T` is missing any of the shared identifier traits.
fn assert_full_surface<T>(valid: &str)
where
T: FromStr
+ for<'a> TryFrom<&'a str>
+ TryFrom<String>
+ AsRef<str>
+ Borrow<str>
+ std::ops::Deref<Target = str>
+ std::fmt::Display
+ std::fmt::Debug
+ Clone
+ PartialEq
+ Eq
+ std::hash::Hash,
String: From<T>,
{
let id = T::try_from(valid).ok().expect("fixture must be valid");
// All five string views agree.
assert_eq!(id.as_ref(), valid);
assert_eq!(Borrow::<str>::borrow(&id), valid);
assert_eq!(&*id, valid);
assert_eq!(id.to_string(), valid);
assert_eq!(String::from(id.clone()), valid);
// Display output re-parses to the same value. Routing through
// `to_string()` rather than `as_ref()` is the point of this assertion: it
// pins `Display` and `FromStr` against each other, which borrowing the
// stored string would not exercise.
#[allow(clippy::unnecessary_to_owned)]
let displayed = id.to_string();
assert_eq!(id, T::from_str(&displayed).ok().expect("FromStr"));
assert_eq!(
T::try_from(valid.to_string())
.ok()
.expect("TryFrom<String>"),
id
);
}
#[test]
fn every_identifier_has_the_same_surface() {
assert_full_surface::<MaloId>("41373559241");
assert_full_surface::<MeloId>("DE0000000000000000000000000000001");
assert_full_surface::<MarktpartnerId>("9900357000003");
assert_full_surface::<NeloId>("E0000000019");
assert_full_surface::<NebeId>("F0000000018");
assert_full_surface::<CrId>("A0000000013");
assert_full_surface::<SgId>("B0000000012");
assert_full_surface::<SrId>("C0000000011");
assert_full_surface::<TrId>("D0000000010");
assert_full_surface::<PaketId>("P9000000010");
assert_full_surface::<EicCode>("10YDE-EON------1");
assert_full_surface::<BilanzkreisId>("11XSUEDWESTSTRO8");
assert_full_surface::<BilanzierungsgebietId>("11YN-0000-0001-Q");
assert_full_surface::<AkivId>("550e8400-e29b-41d4-a716-446655440000");
assert_full_surface::<TranchennummerId>("13003");
// `ObisCode` canonicalises, so its fixture must already be canonical.
assert_full_surface::<ObisCode>("1-0:1.8.0*255");
}
}