42 lines
827 B
Java
42 lines
827 B
Java
|
package com.baeldung.mapdb;
|
||
|
|
|
||
|
|
import org.junit.Test;
|
||
|
|
import org.mapdb.DB;
|
||
|
|
import org.mapdb.DBMaker;
|
||
|
|
import org.mapdb.Serializer;
|
||
|
|
|
||
|
|
import java.util.NavigableSet;
|
||
|
|
|
||
|
|
import static junit.framework.Assert.assertEquals;
|
||
|
|
|
||
|
|
public class TransactionsUnitTest {
|
||
|
|
|
||
|
|
@Test
|
||
|
|
public void givenValidDBSetup_whenTransactionCommittedAndRolledBack_checkPreviousStateAchieved() {
|
||
|
|
|
||
|
|
DB db = DBMaker.memoryDB().transactionEnable().make();
|
||
|
|
|
||
|
|
NavigableSet<String> set = db
|
||
|
|
.treeSet("mySet")
|
||
|
|
.serializer(Serializer.STRING)
|
||
|
|
.createOrOpen();
|
||
|
|
|
||
|
|
set.add("One");
|
||
|
|
set.add("Two");
|
||
|
|
|
||
|
|
db.commit();
|
||
|
|
|
||
|
|
assertEquals(2, set.size());
|
||
|
|
|
||
|
|
set.add("Three");
|
||
|
|
|
||
|
|
assertEquals(3, set.size());
|
||
|
|
|
||
|
|
db.rollback();
|
||
|
|
|
||
|
|
assertEquals(2, set.size());
|
||
|
|
|
||
|
|
db.close();
|
||
|
|
}
|
||
|
|
}
|