public void Infinity()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal(
"y=25;z=26",
string.Join(";", db.GetIterable().Range("y", null).Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"z=26;y=25",
string.Join(";", db.GetIterable().Reverse().Range(null, "x").Select(kv => $"{kv.Key}={kv.Value}")));
}
public void GetIterableRangeReverse()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal(
"y=25;x=24;n=14;m=13;l=12",
string.Join(";", db.GetIterable().Range("c", "y").Reverse().Select(kv => $"{kv.Key}={kv.Value}")));
}
public void GetIterable()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal(
"a=1;b=2;c=3;l=12;m=13;n=14;x=24;y=25;z=26",
string.Join(";", db.GetIterable().Select(kv => $"{kv.Key}={kv.Value}")));
}
public void Delete()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
db.Delete("a").Delete("c").Delete("m").Delete("n");
Assert.Equal(
"b=2;l=12;x=24;y=25;z=26",
string.Join(";", db.GetIterable().Select(kv => $"{kv.Key}={kv.Value}")));
}
public void Integers()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using LevelDB.DB <int, string> db = new LevelDB.DB(options, $"/tmp/DBTests-Integers").Cast <int, string>();
db.Put(1, "aaa").Put(2, "bbb").Put(3, "ccc");
db.Put(7, "ggg").Put(8, "hhh").Put(9, "iii");
db.Put(6, "fff").Put(5, "eee").Put(4, "ddd");
Assert.Equal(
"4=ddd;5=eee;6=fff;7=ggg",
string.Join(";", db.GetIterable().Range(4, 8).Select(kv => $"{kv.Key}={kv.Value}")));
}
public void Prefix()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using var db = new LevelDB.DB(options, $"/tmp/DBTests-Prefix").Cast <string, int>();
db
.Put("a", 1)
.Put("aa", 2)
.Put("ab", 3)
.Put("b", 4)
.Put("ba", 5)
.Put("bb", 6)
.Put("c", 7);
Assert.Equal(
"a=1;aa=2;ab=3",
string.Join(";", db.GetIterable().Prefix("a").Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"b=4;ab=3;aa=2",
string.Join(";", db.GetIterable().Reverse().Prefix("a").Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"b=4;ab=3;aa=2",
string.Join(";", db.GetIterable().Prefix("a").Reverse().Select(kv => $"{kv.Key}={kv.Value}")));
}
public void Snapshot()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
IIterable <string, string> it = db.GetIterable().Snapshot();
db.Delete("a").Delete("c").Delete("m").Delete("n");
Assert.Equal(
"a=1;b=2;c=3;l=12;m=13;n=14;x=24;y=25;z=26",
string.Join(";", it.Select(kv => $"{kv.Key}={kv.Value}")));
it.Snapshot();
Assert.Equal(
"b=2;l=12;x=24;y=25;z=26",
string.Join(";", it.Select(kv => $"{kv.Key}={kv.Value}")));
}