path: root/ethutil/trie_test.go

package ethutil

import (
    _ "encoding/hex"
    _ "fmt"
    "testing"
)

type MemDatabase struct {
    db map[string][]byte
}

func NewMemDatabase() (*MemDatabase, error) {
    db := &MemDatabase{db: make(map[string][]byte)}
    return db, nil
}
func (db *MemDatabase) Put(key []byte, value []byte) {
    db.db[string(key)] = value
}
func (db *MemDatabase) Get(key []byte) ([]byte, error) {
    return db.db[string(key)], nil
}
func (db *MemDatabase) Print()              {}
func (db *MemDatabase) Close()              {}
func (db *MemDatabase) LastKnownTD() []byte { return nil }

func TestTrieSync(t *testing.T) {
    db, _ := NewMemDatabase()
    trie := NewTrie(db, "")

    trie.Update("dog", "kindofalongsentencewhichshouldbeencodedinitsentirety")
    if len(db.db) != 0 {
        t.Error("Expected no data in database")
    }

    trie.Sync()
    if len(db.db) == 0 {
        t.Error("Expected data to be persisted")
    }
}