public void T000_TestBasic_SnapshotTombstones()
{
var raw_db = new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\snapts");
var snap_db = new StepsStageSnapshot(
new StepsStageSubset(
new RecordKeyType_String("snapdb"),
raw_db));
snap_db.setValue(new RecordKey().appendParsedKey("b/1"), RecordUpdate.DeletionTombstone());
snap_db.setValue(new RecordKey().appendParsedKey("a/1"), RecordUpdate.WithPayload("data1"));
var snapshot = snap_db.getSnapshot();
snap_db.setValue(new RecordKey().appendParsedKey("a/1"), RecordUpdate.DeletionTombstone());
raw_db.debugDump();
int count = 0;
foreach (var row in snap_db.scanForward(ScanRange<RecordKey>.All())) {
Console.WriteLine("found record: " + row);
count++;
}
Assert.AreEqual(0, count, "deletion tombstones didn't work in snapshot");
}
public void T000_TestBasic_SnapshotScanAll()
{
// TODO: right now we have to make a subset stage, because otherwise
// we see the .ROOT keyspace. Perhaps we should make prefixes
// an automatic part of stage instantiation!?!?
var snap_db = new StepsStageSnapshot(
new StepsStageSubset(
new RecordKeyType_String("snapdb"),
new LayerManager(InitMode.NEW_REGION, "c:\\BENDtst\\snap")));
string[] keys = new string[] { "1/2/3", "1/3/4", "1/5/3" };
foreach (var key in keys) {
snap_db.setValue(new RecordKey().appendParsedKey(key), RecordUpdate.WithPayload("snap1 data:" + key));
}
// TODO: check the data contents also to make sure we actually saw the right rows
{
int count = 0;
foreach (var row in snap_db.scanForward(ScanRange<RecordKey>.All())) {
var match_key = new RecordKey().appendParsedKey(keys[count]);
Assert.True(match_key.CompareTo(row.Key) == 0, "scan key mismatch");
Console.WriteLine("scanned: " + row);
count++;
}
Assert.AreEqual(keys.Length, count, "incorrect number of keys in stage1 scan");
}
var snap1 = snap_db.getSnapshot();
foreach (var key in keys) {
var newkey = new RecordKey().appendParsedKey(key).appendParsedKey("snap2");
snap_db.setValue(newkey, RecordUpdate.WithPayload("snap2 data:" + key));
}
{
int count = 0;
foreach (var row in snap1.scanForward(ScanRange<RecordKey>.All())) {
var match_key = new RecordKey().appendParsedKey(keys[count]);
Assert.True(match_key.CompareTo(row.Key) == 0, "scan key mismatch");
Console.WriteLine("scanned: " + row);
count++;
}
Assert.AreEqual(keys.Length, count, "incorrect number of keys in snap scan");
}
}