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
|
// Copyright 2018-2019 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
#![cfg(feature = "db-int-key")]
#![allow(clippy::many_single_char_names)]
use std::fs;
use serde_derive::Serialize;
use tempfile::Builder;
use rkv::{backend::SafeMode, PrimitiveInt, Rkv, StoreOptions, Value};
#[test]
fn test_integer_keys() {
let root = Builder::new()
.prefix("test_integer_keys")
.tempdir()
.expect("tempdir");
fs::create_dir_all(root.path()).expect("dir created");
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
let s = k.open_integer("s", StoreOptions::create()).expect("open");
macro_rules! test_integer_keys {
($store:expr, $key:expr) => {{
let mut writer = k.write().expect("writer");
$store
.put(&mut writer, $key, &Value::Str("hello!"))
.expect("write");
assert_eq!(
$store.get(&writer, $key).expect("read"),
Some(Value::Str("hello!"))
);
writer.commit().expect("committed");
let reader = k.read().expect("reader");
assert_eq!(
$store.get(&reader, $key).expect("read"),
Some(Value::Str("hello!"))
);
}};
}
// The integer module provides only the u32 integer key variant
// of IntegerStore, so we can use it without further ado.
test_integer_keys!(s, std::u32::MIN);
test_integer_keys!(s, std::u32::MAX);
// If you want to use another integer key variant, you need to implement
// a newtype, implement PrimitiveInt, and implement or derive Serialize
// for it. Here we do so for the i32 type.
// DANGER! Doing this enables you to open a store with multiple,
// different integer key types, which may result in unexpected behavior.
// Make sure you know what you're doing!
let t = k.open_integer("s", StoreOptions::create()).expect("open");
#[derive(Serialize)]
struct I32(i32);
impl PrimitiveInt for I32 {}
test_integer_keys!(t, I32(std::i32::MIN));
test_integer_keys!(t, I32(std::i32::MAX));
let u = k.open_integer("s", StoreOptions::create()).expect("open");
#[derive(Serialize)]
struct U16(u16);
impl PrimitiveInt for U16 {}
test_integer_keys!(u, U16(std::u16::MIN));
test_integer_keys!(u, U16(std::u16::MAX));
let v = k.open_integer("s", StoreOptions::create()).expect("open");
#[derive(Serialize)]
struct U64(u64);
impl PrimitiveInt for U64 {}
test_integer_keys!(v, U64(std::u64::MIN));
test_integer_keys!(v, U64(std::u64::MAX));
}
|
