To reproduce this testdata, run sqlite3 and execute:

	PRAGMA journal_mode = WAL;
	CREATE TABLE t (x);
	INSERT INTO t (x) VALUES (1);
	INSERT INTO t (x) VALUES (2);

	sl3 split -o generations/0000000000000000/wal/00000000 db-wal
	cp db generations/0000000000000000/snapshots/00000000.snapshot
	lz4 -c --rm generations/0000000000000000/snapshots/00000000.snapshot


Then execute:

	PRAGMA wal_checkpoint(TRUNCATE);
	INSERT INTO t (x) VALUES (3);

	sl3 split -o generations/0000000000000000/wal/00000001 db-wal


Then execute:

	PRAGMA wal_checkpoint(TRUNCATE);
	INSERT INTO t (x) VALUES (4);
	INSERT INTO t (x) VALUES (5);

	sl3 split -o generations/0000000000000000/wal/00000002 db-wal


Finally, obtain the final snapshot:

	PRAGMA wal_checkpoint(TRUNCATE);

	cp db 00000002.db
	rm db*