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internal_test.go
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internal_test.go
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// Copyright 2019 The LevelDB-Go and Pebble Authors. All rights reserved. Use
// of this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
package pebble
import (
"bytes"
"fmt"
"github.com/cockroachdb/pebble/internal/base"
)
// internalIterAdapter adapts the new internalIterator interface which returns
// the key and value from positioning methods (Seek*, First, Last, Next, Prev)
// to the old interface which returned a boolean corresponding to Valid. Only
// used by test code.
type internalIterAdapter struct {
internalIterator
}
func (i *internalIterAdapter) verify(key *InternalKey, val []byte) bool {
valid := key != nil
if valid != i.Valid() {
panic(fmt.Sprintf("inconsistent valid: %t != %t", valid, i.Valid()))
}
if valid {
if base.InternalCompare(bytes.Compare, *key, i.Key()) != 0 {
panic(fmt.Sprintf("inconsistent key: %s != %s", *key, i.Key()))
}
if !bytes.Equal(val, i.Value()) {
panic(fmt.Sprintf("inconsistent value: [% x] != [% x]", val, i.Value()))
}
}
return valid
}
func (i *internalIterAdapter) SeekGE(key []byte) bool {
return i.verify(i.internalIterator.SeekGE(key))
}
func (i *internalIterAdapter) SeekPrefixGE(prefix, key []byte) bool {
return i.verify(i.internalIterator.SeekPrefixGE(prefix, key))
}
func (i *internalIterAdapter) SeekLT(key []byte) bool {
return i.verify(i.internalIterator.SeekLT(key))
}
func (i *internalIterAdapter) First() bool {
return i.verify(i.internalIterator.First())
}
func (i *internalIterAdapter) Last() bool {
return i.verify(i.internalIterator.Last())
}
func (i *internalIterAdapter) Next() bool {
return i.verify(i.internalIterator.Next())
}
func (i *internalIterAdapter) Prev() bool {
return i.verify(i.internalIterator.Prev())
}
func (i *internalIterAdapter) Key() InternalKey {
return *i.internalIterator.Key()
}