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test_column_family.rs
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test_column_family.rs
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// Copyright 2020 Tyler Neely
//
// 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.
mod util;
use pretty_assertions::assert_eq;
use rocksdb::{ColumnFamilyDescriptor, MergeOperands, Options, DB, DEFAULT_COLUMN_FAMILY_NAME};
use util::DBPath;
#[test]
fn test_column_family() {
let n = DBPath::new("_rust_rocksdb_cftest");
// should be able to create column families
{
let mut opts = Options::default();
opts.create_if_missing(true);
opts.set_merge_operator_associative("test operator", test_provided_merge);
let mut db = DB::open(&opts, &n).unwrap();
let opts = Options::default();
match db.create_cf("cf1", &opts) {
Ok(()) => println!("cf1 created successfully"),
Err(e) => {
panic!("could not create column family: {}", e);
}
}
}
// should fail to open db without specifying same column families
{
let mut opts = Options::default();
opts.set_merge_operator_associative("test operator", test_provided_merge);
match DB::open(&opts, &n) {
Ok(_db) => panic!(
"should not have opened DB successfully without \
specifying column
families"
),
Err(e) => assert!(e.to_string().starts_with("Invalid argument")),
}
}
// should properly open db when specyfing all column families
{
let mut opts = Options::default();
opts.set_merge_operator_associative("test operator", test_provided_merge);
match DB::open_cf(&opts, &n, &["cf1"]) {
Ok(_db) => println!("successfully opened db with column family"),
Err(e) => panic!("failed to open db with column family: {}", e),
}
}
// should be able to list a cf
{
let opts = Options::default();
let vec = DB::list_cf(&opts, &n);
match vec {
Ok(vec) => assert_eq!(vec, vec![DEFAULT_COLUMN_FAMILY_NAME, "cf1"]),
Err(e) => panic!("failed to drop column family: {}", e),
}
}
// TODO should be able to use writebatch ops with a cf
{}
// TODO should be able to iterate over a cf
{}
// should b able to drop a cf
{
let mut db = DB::open_cf(&Options::default(), &n, &["cf1"]).unwrap();
match db.drop_cf("cf1") {
Ok(_) => println!("cf1 successfully dropped."),
Err(e) => panic!("failed to drop column family: {}", e),
}
}
}
#[test]
fn test_can_open_db_with_results_of_list_cf() {
// Test scenario derived from GitHub issue #175 and 177
let n = DBPath::new("_rust_rocksdb_cftest_with_list_cf");
{
let mut opts = Options::default();
opts.create_if_missing(true);
let mut db = DB::open(&opts, &n).unwrap();
let opts = Options::default();
assert!(db.create_cf("cf1", &opts).is_ok());
}
{
let options = Options::default();
let cfs = DB::list_cf(&options, &n).unwrap();
let db = DB::open_cf(&options, &n, &cfs).unwrap();
assert!(db.cf_handle("cf1").is_some());
}
}
#[test]
fn test_create_missing_column_family() {
let n = DBPath::new("_rust_rocksdb_missing_cftest");
// should be able to create new column families when opening a new database
{
let mut opts = Options::default();
opts.create_if_missing(true);
opts.create_missing_column_families(true);
match DB::open_cf(&opts, &n, &["cf1"]) {
Ok(_db) => println!("successfully created new column family"),
Err(e) => panic!("failed to create new column family: {}", e),
}
}
}
#[test]
#[ignore]
fn test_merge_operator() {
let n = DBPath::new("_rust_rocksdb_cftest_merge");
// TODO should be able to write, read, merge, batch, and iterate over a cf
{
let mut opts = Options::default();
opts.set_merge_operator_associative("test operator", test_provided_merge);
let db = match DB::open_cf(&opts, &n, &["cf1"]) {
Ok(db) => {
println!("successfully opened db with column family");
db
}
Err(e) => panic!("failed to open db with column family: {}", e),
};
let cf1 = db.cf_handle("cf1").unwrap();
assert!(db.put_cf(cf1, b"k1", b"v1").is_ok());
assert_eq!(db.get_cf(cf1, b"k1").unwrap().unwrap(), b"v1");
let p = db.put_cf(cf1, b"k1", b"a");
assert!(p.is_ok());
db.merge_cf(cf1, b"k1", b"b").unwrap();
db.merge_cf(cf1, b"k1", b"c").unwrap();
db.merge_cf(cf1, b"k1", b"d").unwrap();
db.merge_cf(cf1, b"k1", b"efg").unwrap();
let m = db.merge_cf(cf1, b"k1", b"h");
println!("m is {:?}", m);
// TODO assert!(m.is_ok());
match db.get(b"k1") {
Ok(Some(value)) => match std::str::from_utf8(&value) {
Ok(v) => println!("retrieved utf8 value: {}", v),
Err(_) => println!("did not read valid utf-8 out of the db"),
},
Err(_) => println!("error reading value"),
_ => panic!("value not present!"),
}
let _ = db.get_cf(cf1, b"k1");
// TODO assert!(r.unwrap().as_ref() == b"abcdefgh");
assert!(db.delete(b"k1").is_ok());
assert!(db.get(b"k1").unwrap().is_none());
}
}
fn test_provided_merge(
_: &[u8],
existing_val: Option<&[u8]>,
operands: &mut MergeOperands,
) -> Option<Vec<u8>> {
let nops = operands.size_hint().0;
let mut result: Vec<u8> = Vec::with_capacity(nops);
if let Some(v) = existing_val {
for e in v {
result.push(*e);
}
}
for op in operands {
for e in op {
result.push(*e);
}
}
Some(result)
}
#[test]
fn test_column_family_with_options() {
let n = DBPath::new("_rust_rocksdb_cf_with_optionstest");
{
let mut cfopts = Options::default();
cfopts.set_max_write_buffer_number(16);
let cf_descriptor = ColumnFamilyDescriptor::new("cf1", cfopts);
let mut opts = Options::default();
opts.create_if_missing(true);
opts.create_missing_column_families(true);
let cfs = vec![cf_descriptor];
match DB::open_cf_descriptors(&opts, &n, cfs) {
Ok(_db) => println!("created db with column family descriptors successfully"),
Err(e) => {
panic!(
"could not create new database with column family descriptors: {}",
e
);
}
}
}
{
let mut cfopts = Options::default();
cfopts.set_max_write_buffer_number(16);
let cf_descriptor = ColumnFamilyDescriptor::new("cf1", cfopts);
let opts = Options::default();
let cfs = vec![cf_descriptor];
match DB::open_cf_descriptors(&opts, &n, cfs) {
Ok(_db) => println!("successfully re-opened database with column family descriptors"),
Err(e) => {
panic!(
"unable to re-open database with column family descriptors: {}",
e
);
}
}
}
}
#[test]
fn test_create_duplicate_column_family() {
let n = DBPath::new("_rust_rocksdb_create_duplicate_column_family");
{
let mut opts = Options::default();
opts.create_if_missing(true);
opts.create_missing_column_families(true);
let mut db = match DB::open_cf(&opts, &n, &["cf1"]) {
Ok(d) => d,
Err(e) => panic!("failed to create new column family: {}", e),
};
assert!(db.create_cf("cf1", &opts).is_err());
}
}