forked from cerc-io/plugeth
61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
// Copyright 2022 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package rawdb
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import (
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"encoding/binary"
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"testing"
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)
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func TestKeyLengthIterator(t *testing.T) {
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db := NewMemoryDatabase()
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keyLen := 8
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expectedKeys := make(map[string]struct{})
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for i := 0; i < 100; i++ {
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key := make([]byte, keyLen)
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binary.BigEndian.PutUint64(key, uint64(i))
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if err := db.Put(key, []byte{0x1}); err != nil {
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t.Fatal(err)
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}
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expectedKeys[string(key)] = struct{}{}
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longerKey := make([]byte, keyLen*2)
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binary.BigEndian.PutUint64(longerKey, uint64(i))
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if err := db.Put(longerKey, []byte{0x1}); err != nil {
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t.Fatal(err)
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}
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}
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it := NewKeyLengthIterator(db.NewIterator(nil, nil), keyLen)
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for it.Next() {
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key := it.Key()
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_, exists := expectedKeys[string(key)]
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if !exists {
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t.Fatalf("Found unexpected key %d", binary.BigEndian.Uint64(key))
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}
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delete(expectedKeys, string(key))
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if len(key) != keyLen {
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t.Fatalf("Found unexpected key in key length iterator with length %d", len(key))
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}
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}
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if len(expectedKeys) != 0 {
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t.Fatalf("Expected all keys of length %d to be removed from expected keys during iteration", keyLen)
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}
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}
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