public TransformerDatabaseTests()
{
_memoryDatabase = new MemoryDatabase <string, int>();
_keyTransformer = new MockTransformer();
_valueTransformer = new MockTransformer();
_transformDatabase = new TransformDatabase <string, int, int, string>
(
db: _memoryDatabase,
keyTransformer: _keyTransformer.Reverse(),
valueTransformer: _valueTransformer
);
_values = new[]
{
KeyValuePair.Create(1, "a"),
KeyValuePair.Create(2, "b"),
KeyValuePair.Create(3, "c"),
};
_expectValues = _values
.Select
(
x => KeyValuePair.Create
(
_keyTransformer.TransformPre(x.Key),
_valueTransformer.TransformPost(x.Value)
)
)
.ToArray();
}
public void Enumerate()
{
var db = new MemoryDatabase <string, int>();
var kt = new MockTransformer();
var vt = new MockTransformer();
var tdb = new TransformDatabase <string, int, int, string>
(
db: db,
keyTransformer: new ReverseTransformer <string, int>(kt),
valueTransformer: vt
);
tdb.InsertRange(new KeyValuePair <int, string>[]
{
new KeyValuePair <int, string>(1, "a"),
new KeyValuePair <int, string>(2, "b"),
new KeyValuePair <int, string>(3, "c"),
});
tdb.EnumerateAggressively(3)
.Should()
.BeEquivalentTo(new KeyValuePair <int, string>[]
{
new KeyValuePair <int, string>(1, "a"),
new KeyValuePair <int, string>(2, "b"),
new KeyValuePair <int, string>(3, "c"),
});
}
public void WorksIGuess()
{
var st = new StringTransformer();
// using (var fs = File.Open("copy.db", FileMode.OpenOrCreate))
using (var ms = new MemoryStream())
{
using (var lowlevelDBIODevice = new StringDB5_0_0LowlevelDatabaseIODevice(ms, true))
using (var dbIODevice = new DatabaseIODevice(lowlevelDBIODevice))
using (var iodb = new IODatabase(dbIODevice))
using (var db = new TransformDatabase <byte[], byte[], string, string>(iodb, st, st))
{
db.Insert("test", "value");
db.InsertRange(new KeyValuePair <string, string>[]
{
new KeyValuePair <string, string>("a,", "c,"),
new KeyValuePair <string, string>("b,", "d,"),
});
File.WriteAllBytes("sdb.db", ms.ToArray());
db.EnumerateAggressively(2)
.Should()
.BeEquivalentTo
(
new KeyValuePair <string, string>[]
{
new KeyValuePair <string, string>("test", "value"),
new KeyValuePair <string, string>("a,", "c,"),
new KeyValuePair <string, string>("b,", "d,"),
}
);
}
ms.Seek(0, SeekOrigin.Begin);
// ms.CopyTo(fs);
}
}
