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migrate tests to new migration framework

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This commit is contained in:
Robert Habermeier 2016-07-05 17:12:20 +02:00
parent 1b759c1462
commit d4c9c7cc23
1 changed files with 61 additions and 41 deletions
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102
util/src/migration/tests.rs
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@ -14,13 +14,43 @@
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use std::collections::BTreeMap;
use migration::{Error, Destination, Migration, Config, SimpleMigration};
//! Tests for migrations.
//! A random temp directory is created. A database
impl Destination for BTreeMap<Vec<u8>, Vec<u8>> {
fn commit(&mut self, batch: &BTreeMap<Vec<u8>, Vec<u8>>) -> Result<(), Error> {
self.extend(batch.cloned());
Ok(())
use common::*;
use migration::{Config, SimpleMigration, Manager};
use kvdb::{Database, DBTransaction};
use devtools::RandomTempPath;
use std::path::PathBuf;
fn db_path(path: &Path) -> PathBuf {
let mut p = path.to_owned();
p.push("db");
p
}
// initialize a database at the given directory with the given values.
fn make_db(path: &Path, pairs: BTreeMap<Vec<u8>, Vec<u8>>) {
let db = Database::open_default(path.to_str().unwrap()).expect("failed to open temp database");
{
let transaction = DBTransaction::new();
for (k, v) in pairs {
transaction.put(&k, &v).expect("failed to add pair to transaction");
}
db.write(transaction).expect("failed to write db transaction");
}
}
// helper for verifying a a migrated database.
fn verify_migration(path: &Path, pairs: BTreeMap<Vec<u8>, Vec<u8>>) {
let db = Database::open_default(path.to_str().unwrap()).unwrap();
for (k, v) in pairs {
let x = db.get(&k).unwrap().unwrap();
assert_eq!(&x[..], &v[..]);
}
}
@ -54,68 +84,58 @@ impl SimpleMigration for Migration1 {
#[test]
fn one_simple_migration() {
let dir = RandomTempPath::create_dir();
let db_path = db_path(dir.as_path());
let mut manager = Manager::new(Config::default());
let keys = vec![vec![], vec![1u8]];
let values = vec![vec![], vec![1u8]];
let db = keys.into_iter().zip(values.into_iter());
make_db(&db_path, map![vec![] => vec![], vec![1] => vec![1]]);
let expected = map![vec![0x11] => vec![0x22], vec![1, 0x11] => vec![1, 0x22]];
let expected_keys = vec![vec![0x11u8], vec![1, 0x11]];
let expected_values = vec![vec![0x22u8], vec![1, 0x22]];
let expected_db = expected_keys.into_iter().zip(expected_values.into_iter()).collect::<BTreeMap<_, _>>();
let mut result = BTreeMap::new();
manager.add_migration(Migration0).unwrap();
manager.execute(db, 0, &mut result).unwrap();
assert_eq!(expected_db, result);
let end_path = manager.execute(&db_path, 0).unwrap();
verify_migration(&end_path, expected);
}
#[test]
#[should_panic]
fn no_migration_needed() {
let dir = RandomTempPath::create_dir();
let db_path = db_path(dir.as_path());
let mut manager = Manager::new(Config::default());
let keys = vec![vec![], vec![1u8]];
let values = vec![vec![], vec![1u8]];
let db = keys.into_iter().zip(values.into_iter());
make_db(&db_path, map![vec![] => vec![], vec![1] => vec![1]]);
let mut result = BTreeMap::new();
manager.add_migration(Migration0).unwrap();
manager.execute(db, 1, &mut result).unwrap();
manager.execute(&db_path, 1).unwrap();
}
#[test]
fn multiple_migrations() {
let dir = RandomTempPath::create_dir();
let db_path = db_path(dir.as_path());
let mut manager = Manager::new(Config::default());
let keys = vec![vec![], vec![1u8]];
let values = vec![vec![], vec![1u8]];
let db = keys.into_iter().zip(values.into_iter());
make_db(&db_path, map![vec![] => vec![], vec![1] => vec![1]]);
let expected = map![vec![0x11] => vec![], vec![1, 0x11] => vec![]];
let expected_keys = vec![vec![0x11u8], vec![1, 0x11]];
let expected_values = vec![vec![], vec![]];
let expected_db = expected_keys.into_iter().zip(expected_values.into_iter()).collect::<BTreeMap<_, _>>();
let mut result = BTreeMap::new();
manager.add_migration(Migration0).unwrap();
manager.add_migration(Migration1).unwrap();
manager.execute(db, 0, &mut result).unwrap();
assert_eq!(expected_db, result);
let end_path = manager.execute(&db_path, 0).unwrap();
verify_migration(&end_path, expected);
}
#[test]
fn second_migration() {
let dir = RandomTempPath::create_dir();
let db_path = db_path(dir.as_path());
let mut manager = Manager::new(Config::default());
let keys = vec![vec![], vec![1u8]];
let values = vec![vec![], vec![1u8]];
let db = keys.into_iter().zip(values.into_iter());
make_db(&db_path, map![vec![] => vec![], vec![1] => vec![1]]);
let expected = map![vec![] => vec![], vec![1] => vec![]];
let expected_keys = vec![vec![], vec![1u8]];
let expected_values = vec![vec![], vec![]];
let expected_db = expected_keys.into_iter().zip(expected_values.into_iter()).collect::<BTreeMap<_, _>>();
let mut result = BTreeMap::new();
manager.add_migration(Migration0).unwrap();
manager.add_migration(Migration1).unwrap();
manager.execute(db, 1, &mut result).unwrap();
assert_eq!(expected_db, result);
let end_path = manager.execute(&db_path, 1).unwrap();
verify_migration(&end_path, expected);
}
#[test]