57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
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// Copyright 2017 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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// +build gofuzz
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package bitutil
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import "bytes"
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// Fuzz implements a go-fuzz fuzzer method to test various compression method
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// invocations.
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func Fuzz(data []byte) int {
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if len(data) == 0 {
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return -1
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}
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if data[0]%2 == 0 {
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return fuzzCompress(data[1:])
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}
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return fuzzDecompress(data[1:])
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}
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// fuzzCompress implements a go-fuzz fuzzer method to test the bit compression and
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// decompression algorithm.
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func fuzzCompress(data []byte) int {
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proc, _ := DecompressBytes(CompressBytes(data), len(data))
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if !bytes.Equal(data, proc) {
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panic("content mismatch")
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}
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return 0
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}
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// fuzzDecompress implements a go-fuzz fuzzer method to test the bit decompression
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// and recompression algorithm.
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func fuzzDecompress(data []byte) int {
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blob, err := DecompressBytes(data, 1024)
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if err != nil {
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return 0
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}
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if comp := CompressBytes(blob); !bytes.Equal(comp, data) {
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panic("content mismatch")
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}
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return 0
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}
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