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