plugeth/trie/trie_test.go

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package trie
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import (
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"bytes"
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"fmt"
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"testing"
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"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethutil"
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)
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type Db map[string][]byte
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func (self Db) Get(k []byte) ([]byte, error) { return self[string(k)], nil }
func (self Db) Put(k, v []byte) { self[string(k)] = v }
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// Used for testing
func NewEmpty() *Trie {
return New(nil, make(Db))
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}
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func TestEmptyTrie(t *testing.T) {
trie := NewEmpty()
res := trie.Hash()
exp := crypto.Sha3(ethutil.Encode(""))
if !bytes.Equal(res, exp) {
t.Errorf("expected %x got %x", exp, res)
}
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}
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func TestInsert(t *testing.T) {
trie := NewEmpty()
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trie.UpdateString("doe", "reindeer")
trie.UpdateString("dog", "puppy")
trie.UpdateString("dogglesworth", "cat")
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exp := ethutil.Hex2Bytes("8aad789dff2f538bca5d8ea56e8abe10f4c7ba3a5dea95fea4cd6e7c3a1168d3")
root := trie.Hash()
if !bytes.Equal(root, exp) {
t.Errorf("exp %x got %x", exp, root)
}
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trie = NewEmpty()
trie.UpdateString("A", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
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exp = ethutil.Hex2Bytes("d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab")
root = trie.Hash()
if !bytes.Equal(root, exp) {
t.Errorf("exp %x got %x", exp, root)
}
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}
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func TestGet(t *testing.T) {
trie := NewEmpty()
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trie.UpdateString("doe", "reindeer")
trie.UpdateString("dog", "puppy")
trie.UpdateString("dogglesworth", "cat")
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res := trie.GetString("dog")
if !bytes.Equal(res, []byte("puppy")) {
t.Errorf("expected puppy got %x", res)
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}
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unknown := trie.GetString("unknown")
if unknown != nil {
t.Errorf("expected nil got %x", unknown)
}
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}
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func TestDelete(t *testing.T) {
trie := NewEmpty()
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vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
}
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for _, val := range vals {
if val.v != "" {
trie.UpdateString(val.k, val.v)
} else {
trie.DeleteString(val.k)
}
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}
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hash := trie.Hash()
exp := ethutil.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
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}
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}
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func TestEmptyValues(t *testing.T) {
trie := NewEmpty()
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vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
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}
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for _, val := range vals {
trie.UpdateString(val.k, val.v)
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}
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hash := trie.Hash()
exp := ethutil.Hex2Bytes("5991bb8c6514148a29db676a14ac506cd2cd5775ace63c30a4fe457715e9ac84")
if !bytes.Equal(hash, exp) {
t.Errorf("expected %x got %x", exp, hash)
}
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}
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func TestReplication(t *testing.T) {
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
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for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
trie.Commit()
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trie2 := New(trie.roothash, trie.cache.backend)
if string(trie2.GetString("horse")) != "stallion" {
t.Error("expected to have horse => stallion")
}
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hash := trie2.Hash()
exp := trie.Hash()
if !bytes.Equal(hash, exp) {
t.Errorf("root failure. expected %x got %x", exp, hash)
}
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}
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func TestReset(t *testing.T) {
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
}
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for _, val := range vals {
trie.UpdateString(val.k, val.v)
}
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trie.Commit()
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before := ethutil.CopyBytes(trie.roothash)
trie.UpdateString("should", "revert")
trie.Hash()
// Should have no effect
trie.Hash()
trie.Hash()
// ###
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trie.Reset()
after := ethutil.CopyBytes(trie.roothash)
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if !bytes.Equal(before, after) {
t.Errorf("expected roots to be equal. %x - %x", before, after)
}
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}
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func TestParanoia(t *testing.T) {
t.Skip()
trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
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{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
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trie.UpdateString(val.k, val.v)
}
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trie.Commit()
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ok, t2 := ParanoiaCheck(trie, trie.cache.backend)
if !ok {
t.Errorf("trie paranoia check failed %x %x", trie.roothash, t2.roothash)
}
}
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// Not an actual test
func TestOutput(t *testing.T) {
t.Skip()
base := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
trie := NewEmpty()
for i := 0; i < 50; i++ {
trie.UpdateString(fmt.Sprintf("%s%d", base, i), "valueeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
}
fmt.Println("############################## FULL ################################")
fmt.Println(trie.root)
trie.Commit()
fmt.Println("############################## SMALL ################################")
trie2 := New(trie.roothash, trie.cache.backend)
trie2.GetString(base + "20")
fmt.Println(trie2.root)
}
func BenchmarkGets(b *testing.B) {
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trie := NewEmpty()
vals := []struct{ k, v string }{
{"do", "verb"},
{"ether", "wookiedoo"},
{"horse", "stallion"},
{"shaman", "horse"},
{"doge", "coin"},
{"ether", ""},
{"dog", "puppy"},
{"shaman", ""},
{"somethingveryoddindeedthis is", "myothernodedata"},
}
for _, val := range vals {
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trie.UpdateString(val.k, val.v)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
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trie.Get([]byte("horse"))
}
}
func BenchmarkUpdate(b *testing.B) {
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trie := NewEmpty()
b.ResetTimer()
for i := 0; i < b.N; i++ {
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trie.UpdateString(fmt.Sprintf("aaaaaaaaa%d", i), "value")
}
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trie.Hash()
}