local n = 1
local function test(res, ermsg)
	if not res then error(ermsg)
	else
		print("ok",n)
		n = n + 1
	end
end

local lmdb=require'lmdb'
local env=lmdb.open("data")
test(env,"no env")

local txn = env:txn_begin(true)
test(txn, "no txn")

local db = txn:open()
test(db, "no db")
db["foo"]="bar"
db["the"]="of the"
test(db["foo"] == "bar","no eq 1")

test(txn:commit())

local txn2 = env:txn_begin()
test(txn2,"no txn2")
local db2 = txn2:open()
test(db2, "no db2")

test(db2["the"] == "of the", "no eq 2")
test(txn2:commit())

local ok,v  = pcall(function() return db2["foo"] end)
test(not ok,"shouldn't be able to access db from closed txn")
print("ok, got msg",v)

print()
print("everything good!!!")