58 lines
1.1 KiB
Go
58 lines
1.1 KiB
Go
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package test
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import (
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"sync"
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"github.com/ethereum/go-ethereum/crypto"
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)
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// test helpers
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// TODO: move into common test helper package (see p2p/crypto etc.)
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func NewHashPool() *TestHashPool {
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return &TestHashPool{intToHash: make(intToHash), hashToInt: make(hashToInt)}
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}
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type intToHash map[int][]byte
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type hashToInt map[string]int
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// hashPool is a test helper, that allows random hashes to be referred to by integers
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type TestHashPool struct {
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intToHash
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hashToInt
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lock sync.Mutex
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}
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func newHash(i int) []byte {
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return crypto.Sha3([]byte(string(i)))
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}
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func (self *TestHashPool) IndexesToHashes(indexes []int) (hashes [][]byte) {
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self.lock.Lock()
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defer self.lock.Unlock()
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for _, i := range indexes {
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hash, found := self.intToHash[i]
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if !found {
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hash = newHash(i)
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self.intToHash[i] = hash
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self.hashToInt[string(hash)] = i
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}
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hashes = append(hashes, hash)
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}
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return
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}
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func (self *TestHashPool) HashesToIndexes(hashes [][]byte) (indexes []int) {
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self.lock.Lock()
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defer self.lock.Unlock()
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for _, hash := range hashes {
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i, found := self.hashToInt[string(hash)]
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if !found {
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i = -1
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}
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indexes = append(indexes, i)
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}
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return
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}
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