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trie: added error handling

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Created alternate versions of Trie and SecureTrie functions that can return a MissingNodeError (used by ODR services)
This commit is contained in:
zsfelfoldi
2015-11-25 18:28:21 +01:00
parent 66d47ced48
commit 52904ae32f
7 changed files with 346 additions and 71 deletions
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75
trie/trie_test.go
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@ -64,11 +64,84 @@ func TestMissingRoot(t *testing.T) {
if trie != nil {
t.Error("New returned non-nil trie for invalid root")
}
if err != ErrMissingRoot {
if _, ok := err.(*MissingNodeError); !ok {
t.Error("New returned wrong error: %v", err)
}
}
func TestMissingNode(t *testing.T) {
db, _ := ethdb.NewMemDatabase()
trie, _ := New(common.Hash{}, db)
updateString(trie, "120000", "qwerqwerqwerqwerqwerqwerqwerqwer")
updateString(trie, "123456", "asdfasdfasdfasdfasdfasdfasdfasdf")
root, _ := trie.Commit()
ClearGlobalCache()
trie, _ = New(root, db)
_, err := trie.TryGet([]byte("120000"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(root, db)
_, err = trie.TryGet([]byte("120099"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(root, db)
_, err = trie.TryGet([]byte("123456"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(root, db)
err = trie.TryUpdate([]byte("120099"), []byte("zxcvzxcvzxcvzxcvzxcvzxcvzxcvzxcv"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(root, db)
err = trie.TryDelete([]byte("123456"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
db.Delete(common.FromHex("e1d943cc8f061a0c0b98162830b970395ac9315654824bf21b73b891365262f9"))
ClearGlobalCache()
trie, _ = New(root, db)
_, err = trie.TryGet([]byte("120000"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
trie, _ = New(root, db)
_, err = trie.TryGet([]byte("120099"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
trie, _ = New(root, db)
_, err = trie.TryGet([]byte("123456"))
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
trie, _ = New(root, db)
err = trie.TryUpdate([]byte("120099"), []byte("zxcv"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
trie, _ = New(root, db)
err = trie.TryDelete([]byte("123456"))
if _, ok := err.(*MissingNodeError); !ok {
t.Errorf("Wrong error: %v", err)
}
}
func TestInsert(t *testing.T) {
trie := newEmpty()