nim-eth/tests/trie/test_caching_db_backend.nim

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2019-02-05 12:01:10 +00:00
import
unittest,
eth/trie/db,
eth/trie/backends/caching_backend
let
key1 = [0.byte, 0, 1]
key2 = [0.byte, 0, 2]
key3 = [0.byte, 0, 3]
key4 = [0.byte, 0, 4]
value1 = [1.byte, 0, 1]
value2 = [1.byte, 0, 2]
value3 = [1.byte, 0, 3]
value4 = [1.byte, 0, 4]
suite "Caching DB backend":
test "Basic test":
let mdb = newMemoryDB()
mdb.put(key1, value1)
mdb.put(key2, value2)
let cdb = newCachingDB(mdb)
check:
cdb.get(key1) == @value1
cdb.get(key2) == @value2
cdb.del(key1)
check:
key1 notin cdb
mdb.get(key1) == @value1
cdb.put(key3, value3)
check:
cdb.get(key3) == @value3
key3 notin mdb
cdb.put(key4, value4)
cdb.del(key4)
check(key4 notin cdb)
cdb.commit()
check:
key1 notin mdb
mdb.get(key2) == @value2
mdb.get(key3) == @value3
key4 notin mdb