435 lines
11 KiB
Go
435 lines
11 KiB
Go
package trie
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/hex"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"net/http"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/ethutil"
|
|
)
|
|
|
|
const LONG_WORD = "1234567890abcdefghijklmnopqrstuvwxxzABCEFGHIJKLMNOPQRSTUVWXYZ"
|
|
|
|
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) Delete(key []byte) error {
|
|
delete(db.db, string(key))
|
|
return nil
|
|
}
|
|
func (db *MemDatabase) Print() {}
|
|
func (db *MemDatabase) Close() {}
|
|
func (db *MemDatabase) LastKnownTD() []byte { return nil }
|
|
|
|
func NewTrie() (*MemDatabase, *Trie) {
|
|
db, _ := NewMemDatabase()
|
|
return db, New(db, "")
|
|
}
|
|
|
|
func TestTrieSync(t *testing.T) {
|
|
db, trie := NewTrie()
|
|
|
|
trie.Update("dog", LONG_WORD)
|
|
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")
|
|
}
|
|
}
|
|
|
|
func TestTrieDirtyTracking(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
trie.Update("dog", LONG_WORD)
|
|
if !trie.cache.IsDirty {
|
|
t.Error("Expected trie to be dirty")
|
|
}
|
|
|
|
trie.Sync()
|
|
if trie.cache.IsDirty {
|
|
t.Error("Expected trie not to be dirty")
|
|
}
|
|
|
|
trie.Update("test", LONG_WORD)
|
|
trie.cache.Undo()
|
|
if trie.cache.IsDirty {
|
|
t.Error("Expected trie not to be dirty")
|
|
}
|
|
|
|
}
|
|
|
|
func TestTrieReset(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
|
|
trie.Update("cat", LONG_WORD)
|
|
if len(trie.cache.nodes) == 0 {
|
|
t.Error("Expected cached nodes")
|
|
}
|
|
|
|
trie.cache.Undo()
|
|
|
|
if len(trie.cache.nodes) != 0 {
|
|
t.Error("Expected no nodes after undo")
|
|
}
|
|
}
|
|
|
|
func TestTrieGet(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
|
|
trie.Update("cat", LONG_WORD)
|
|
x := trie.Get("cat")
|
|
if x != LONG_WORD {
|
|
t.Error("expected %s, got %s", LONG_WORD, x)
|
|
}
|
|
}
|
|
|
|
func TestTrieUpdating(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
trie.Update("cat", LONG_WORD)
|
|
trie.Update("cat", LONG_WORD+"1")
|
|
x := trie.Get("cat")
|
|
if x != LONG_WORD+"1" {
|
|
t.Error("expected %S, got %s", LONG_WORD+"1", x)
|
|
}
|
|
}
|
|
|
|
func TestTrieCmp(t *testing.T) {
|
|
_, trie1 := NewTrie()
|
|
_, trie2 := NewTrie()
|
|
|
|
trie1.Update("doge", LONG_WORD)
|
|
trie2.Update("doge", LONG_WORD)
|
|
if !trie1.Cmp(trie2) {
|
|
t.Error("Expected tries to be equal")
|
|
}
|
|
|
|
trie1.Update("dog", LONG_WORD)
|
|
trie2.Update("cat", LONG_WORD)
|
|
if trie1.Cmp(trie2) {
|
|
t.Errorf("Expected tries not to be equal %x %x", trie1.Root, trie2.Root)
|
|
}
|
|
}
|
|
|
|
func TestTrieDelete(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
trie.Update("cat", LONG_WORD)
|
|
exp := trie.Root
|
|
trie.Update("dog", LONG_WORD)
|
|
trie.Delete("dog")
|
|
if !reflect.DeepEqual(exp, trie.Root) {
|
|
t.Errorf("Expected tries to be equal %x : %x", exp, trie.Root)
|
|
}
|
|
|
|
trie.Update("dog", LONG_WORD)
|
|
exp = trie.Root
|
|
trie.Update("dude", LONG_WORD)
|
|
trie.Delete("dude")
|
|
if !reflect.DeepEqual(exp, trie.Root) {
|
|
t.Errorf("Expected tries to be equal %x : %x", exp, trie.Root)
|
|
}
|
|
}
|
|
|
|
func TestTrieDeleteWithValue(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
trie.Update("c", LONG_WORD)
|
|
exp := trie.Root
|
|
trie.Update("ca", LONG_WORD)
|
|
trie.Update("cat", LONG_WORD)
|
|
trie.Delete("ca")
|
|
trie.Delete("cat")
|
|
if !reflect.DeepEqual(exp, trie.Root) {
|
|
t.Errorf("Expected tries to be equal %x : %x", exp, trie.Root)
|
|
}
|
|
|
|
}
|
|
|
|
func TestTriePurge(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
trie.Update("c", LONG_WORD)
|
|
trie.Update("ca", LONG_WORD)
|
|
trie.Update("cat", LONG_WORD)
|
|
|
|
lenBefore := len(trie.cache.nodes)
|
|
it := trie.NewIterator()
|
|
if num := it.Purge(); num != 3 {
|
|
t.Errorf("Expected purge to return 3, got %d", num)
|
|
}
|
|
|
|
if lenBefore == len(trie.cache.nodes) {
|
|
t.Errorf("Expected cached nodes to be deleted")
|
|
}
|
|
}
|
|
|
|
func h(str string) string {
|
|
d, err := hex.DecodeString(str)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
return string(d)
|
|
}
|
|
|
|
func get(in string) (out string) {
|
|
if len(in) > 2 && in[:2] == "0x" {
|
|
out = h(in[2:])
|
|
} else {
|
|
out = in
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
type Test struct {
|
|
Name string
|
|
In map[string]string
|
|
Root string
|
|
}
|
|
|
|
func CreateTest(name string, data []byte) (Test, error) {
|
|
t := Test{Name: name}
|
|
err := json.Unmarshal(data, &t)
|
|
if err != nil {
|
|
return Test{}, fmt.Errorf("%v", err)
|
|
}
|
|
|
|
return t, nil
|
|
}
|
|
|
|
func CreateTests(uri string, cb func(Test)) map[string]Test {
|
|
resp, err := http.Get(uri)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
data, err := ioutil.ReadAll(resp.Body)
|
|
|
|
var objmap map[string]*json.RawMessage
|
|
err = json.Unmarshal(data, &objmap)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
tests := make(map[string]Test)
|
|
for name, testData := range objmap {
|
|
test, err := CreateTest(name, *testData)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
if cb != nil {
|
|
cb(test)
|
|
}
|
|
tests[name] = test
|
|
}
|
|
|
|
return tests
|
|
}
|
|
|
|
func RandomData() [][]string {
|
|
data := [][]string{
|
|
{"0x000000000000000000000000ec4f34c97e43fbb2816cfd95e388353c7181dab1", "0x4e616d6552656700000000000000000000000000000000000000000000000000"},
|
|
{"0x0000000000000000000000000000000000000000000000000000000000000045", "0x22b224a1420a802ab51d326e29fa98e34c4f24ea"},
|
|
{"0x0000000000000000000000000000000000000000000000000000000000000046", "0x67706c2076330000000000000000000000000000000000000000000000000000"},
|
|
{"0x000000000000000000000000697c7b8c961b56f675d570498424ac8de1a918f6", "0x6f6f6f6820736f2067726561742c207265616c6c6c793f000000000000000000"},
|
|
{"0x0000000000000000000000007ef9e639e2733cb34e4dfc576d4b23f72db776b2", "0x4655474156000000000000000000000000000000000000000000000000000000"},
|
|
{"0x6f6f6f6820736f2067726561742c207265616c6c6c793f000000000000000000", "0x697c7b8c961b56f675d570498424ac8de1a918f6"},
|
|
{"0x4655474156000000000000000000000000000000000000000000000000000000", "0x7ef9e639e2733cb34e4dfc576d4b23f72db776b2"},
|
|
{"0x4e616d6552656700000000000000000000000000000000000000000000000000", "0xec4f34c97e43fbb2816cfd95e388353c7181dab1"},
|
|
}
|
|
|
|
var c [][]string
|
|
for len(data) != 0 {
|
|
e := rand.Intn(len(data))
|
|
c = append(c, data[e])
|
|
|
|
copy(data[e:], data[e+1:])
|
|
data[len(data)-1] = nil
|
|
data = data[:len(data)-1]
|
|
}
|
|
|
|
return c
|
|
}
|
|
|
|
const MaxTest = 1000
|
|
|
|
// This test insert data in random order and seeks to find indifferences between the different tries
|
|
func TestRegression(t *testing.T) {
|
|
rand.Seed(time.Now().Unix())
|
|
|
|
roots := make(map[string]int)
|
|
for i := 0; i < MaxTest; i++ {
|
|
_, trie := NewTrie()
|
|
data := RandomData()
|
|
|
|
for _, test := range data {
|
|
trie.Update(test[0], test[1])
|
|
}
|
|
trie.Delete("0x4e616d6552656700000000000000000000000000000000000000000000000000")
|
|
|
|
roots[string(trie.Root.([]byte))] += 1
|
|
}
|
|
|
|
if len(roots) > 1 {
|
|
for root, num := range roots {
|
|
t.Errorf("%x => %d\n", root, num)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDelete(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
|
|
trie.Update("a", "jeffreytestlongstring")
|
|
trie.Update("aa", "otherstring")
|
|
trie.Update("aaa", "othermorestring")
|
|
trie.Update("aabbbbccc", "hithere")
|
|
trie.Update("abbcccdd", "hstanoehutnaheoustnh")
|
|
trie.Update("rnthaoeuabbcccdd", "hstanoehutnaheoustnh")
|
|
trie.Update("rneuabbcccdd", "hstanoehutnaheoustnh")
|
|
trie.Update("rneuabboeusntahoeucccdd", "hstanoehutnaheoustnh")
|
|
trie.Update("rnxabboeusntahoeucccdd", "hstanoehutnaheoustnh")
|
|
trie.Delete("aaboaestnuhbccc")
|
|
trie.Delete("a")
|
|
trie.Update("a", "nthaonethaosentuh")
|
|
trie.Update("c", "shtaosntehua")
|
|
trie.Delete("a")
|
|
trie.Update("aaaa", "testmegood")
|
|
|
|
_, t2 := NewTrie()
|
|
trie.NewIterator().Each(func(key string, v *ethutil.Value) {
|
|
if key == "aaaa" {
|
|
t2.Update(key, v.Str())
|
|
} else {
|
|
t2.Update(key, v.Str())
|
|
}
|
|
})
|
|
|
|
a := ethutil.NewValue(trie.Root).Bytes()
|
|
b := ethutil.NewValue(t2.Root).Bytes()
|
|
|
|
if bytes.Compare(a, b) != 0 {
|
|
t.Errorf("Expected %x and %x to be equal", a, b)
|
|
}
|
|
}
|
|
|
|
func TestTerminator(t *testing.T) {
|
|
key := CompactDecode("hello")
|
|
if !HasTerm(key) {
|
|
t.Errorf("Expected %v to have a terminator", key)
|
|
}
|
|
}
|
|
|
|
func TestIt(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
trie.Update("cat", "cat")
|
|
trie.Update("doge", "doge")
|
|
trie.Update("wallace", "wallace")
|
|
it := trie.Iterator()
|
|
|
|
inputs := []struct {
|
|
In, Out string
|
|
}{
|
|
{"", "cat"},
|
|
{"bobo", "cat"},
|
|
{"c", "cat"},
|
|
{"car", "cat"},
|
|
{"catering", "doge"},
|
|
{"w", "wallace"},
|
|
{"wallace123", ""},
|
|
}
|
|
|
|
for _, test := range inputs {
|
|
res := string(it.Next(test.In))
|
|
if res != test.Out {
|
|
t.Errorf(test.In, "failed. Got", res, "Expected", test.Out)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBeginsWith(t *testing.T) {
|
|
a := CompactDecode("hello")
|
|
b := CompactDecode("hel")
|
|
|
|
if BeginsWith(a, b) {
|
|
t.Errorf("Expected %x to begin with %x", a, b)
|
|
}
|
|
|
|
if BeginsWith(b, a) {
|
|
t.Errorf("Expected %x not to begin with %x", b, a)
|
|
}
|
|
}
|
|
|
|
/*
|
|
func TestRndCase(t *testing.T) {
|
|
_, trie := NewTrie()
|
|
|
|
data := []struct{ k, v string }{
|
|
{"0000000000000000000000000000000000000000000000000000000000000001", "a07573657264617461000000000000000000000000000000000000000000000000"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000003", "8453bb5b31"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000004", "850218711a00"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000005", "9462d7705bd0b3ecbc51a8026a25597cb28a650c79"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000010", "947e70f9460402290a3e487dae01f610a1a8218fda"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000111", "01"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000112", "a053656e6174650000000000000000000000000000000000000000000000000000"},
|
|
{"0000000000000000000000000000000000000000000000000000000000000113", "a053656e6174650000000000000000000000000000000000000000000000000000"},
|
|
{"53656e6174650000000000000000000000000000000000000000000000000000", "94977e3f62f5e1ed7953697430303a3cfa2b5b736e"},
|
|
}
|
|
for _, e := range data {
|
|
trie.Update(string(ethutil.Hex2Bytes(e.k)), string(ethutil.Hex2Bytes(e.v)))
|
|
}
|
|
|
|
fmt.Printf("root after update %x\n", trie.Root)
|
|
trie.NewIterator().Each(func(k string, v *ethutil.Value) {
|
|
fmt.Printf("%x %x\n", k, v.Bytes())
|
|
})
|
|
|
|
data = []struct{ k, v string }{
|
|
{"0000000000000000000000000000000000000000000000000000000000000112", ""},
|
|
{"436974697a656e73000000000000000000000000000000000000000000000001", ""},
|
|
{"436f757274000000000000000000000000000000000000000000000000000002", ""},
|
|
{"53656e6174650000000000000000000000000000000000000000000000000000", ""},
|
|
{"436f757274000000000000000000000000000000000000000000000000000000", ""},
|
|
{"53656e6174650000000000000000000000000000000000000000000000000001", ""},
|
|
{"0000000000000000000000000000000000000000000000000000000000000113", ""},
|
|
{"436974697a656e73000000000000000000000000000000000000000000000000", ""},
|
|
{"436974697a656e73000000000000000000000000000000000000000000000002", ""},
|
|
{"436f757274000000000000000000000000000000000000000000000000000001", ""},
|
|
{"0000000000000000000000000000000000000000000000000000000000000111", ""},
|
|
{"53656e6174650000000000000000000000000000000000000000000000000002", ""},
|
|
}
|
|
|
|
for _, e := range data {
|
|
trie.Delete(string(ethutil.Hex2Bytes(e.k)))
|
|
}
|
|
|
|
fmt.Printf("root after delete %x\n", trie.Root)
|
|
|
|
trie.NewIterator().Each(func(k string, v *ethutil.Value) {
|
|
fmt.Printf("%x %x\n", k, v.Bytes())
|
|
})
|
|
|
|
fmt.Printf("%x\n", trie.Get(string(ethutil.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000001"))))
|
|
}
|
|
*/
|