// TestBasicRW tests basic read-write
func TestBasicRW(t *testing.T, db statedb.VersionedDB) {
db.Open()
defer db.Close()
val, err := db.GetState("ns", "key1")
testutil.AssertNoError(t, err, "")
testutil.AssertNil(t, val)
batch := statedb.NewUpdateBatch()
vv1 := statedb.VersionedValue{Value: []byte("value1"), Version: version.NewHeight(1, 1)}
vv2 := statedb.VersionedValue{Value: []byte("value2"), Version: version.NewHeight(1, 2)}
vv3 := statedb.VersionedValue{Value: []byte("value3"), Version: version.NewHeight(1, 3)}
vv4 := statedb.VersionedValue{Value: []byte{}, Version: version.NewHeight(1, 4)}
batch.Put("ns1", "key1", vv1.Value, vv1.Version)
batch.Put("ns1", "key2", vv2.Value, vv2.Version)
batch.Put("ns2", "key3", vv3.Value, vv3.Version)
batch.Put("ns2", "key4", vv4.Value, vv4.Version)
savePoint := version.NewHeight(2, 5)
db.ApplyUpdates(batch, savePoint)
vv, _ := db.GetState("ns1", "key1")
testutil.AssertEquals(t, vv, &vv1)
vv, _ = db.GetState("ns2", "key4")
testutil.AssertEquals(t, vv, &vv4)
sp, err := db.GetLatestSavePoint()
testutil.AssertNoError(t, err, "")
testutil.AssertEquals(t, sp, savePoint)
}
