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author | Péter Szilágyi <peterke@gmail.com> | 2017-05-08 17:30:35 +0800 |
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committer | GitHub <noreply@github.com> | 2017-05-08 17:30:35 +0800 |
commit | 2e4d23a7934a31cb7e65dce5bb975339be964e1f (patch) | |
tree | 461a6514cbf1477150ce4d22a40e436e73ddf717 /common/bitutil/compress_fuzz.go | |
parent | dd483d7d0dc7bace4c38963f69ee9afa10c4183a (diff) | |
parent | 82defe5c5663ca0c28563f8a111d327c87726267 (diff) | |
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Merge pull request #14427 from zsfelfoldi/compress
common/bitutil: added data compression algorithm
Diffstat (limited to 'common/bitutil/compress_fuzz.go')
-rw-r--r-- | common/bitutil/compress_fuzz.go | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/common/bitutil/compress_fuzz.go b/common/bitutil/compress_fuzz.go new file mode 100644 index 000000000..1b87f50ed --- /dev/null +++ b/common/bitutil/compress_fuzz.go @@ -0,0 +1,56 @@ +// Copyright 2017 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +// +build gofuzz + +package bitutil + +import "bytes" + +// Fuzz implements a go-fuzz fuzzer method to test various encoding method +// invocations. +func Fuzz(data []byte) int { + if len(data) == 0 { + return -1 + } + if data[0]%2 == 0 { + return fuzzEncode(data[1:]) + } + return fuzzDecode(data[1:]) +} + +// fuzzEncode implements a go-fuzz fuzzer method to test the bitset encoding and +// decoding algorithm. +func fuzzEncode(data []byte) int { + proc, _ := bitsetDecodeBytes(bitsetEncodeBytes(data), len(data)) + if !bytes.Equal(data, proc) { + panic("content mismatch") + } + return 0 +} + +// fuzzDecode implements a go-fuzz fuzzer method to test the bit decoding and +// reencoding algorithm. +func fuzzDecode(data []byte) int { + blob, err := bitsetDecodeBytes(data, 1024) + if err != nil { + return 0 + } + if comp := bitsetEncodeBytes(blob); !bytes.Equal(comp, data) { + panic("content mismatch") + } + return 0 +} |