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author | Péter Szilágyi <peterke@gmail.com> | 2017-08-29 19:13:11 +0800 |
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committer | Péter Szilágyi <peterke@gmail.com> | 2017-09-06 16:14:19 +0800 |
commit | f585f9eee8cb18423c23fe8b517b5b4cbe3b3755 (patch) | |
tree | 08c232ee58318c20f971cf8e3f5dfa09f1e2caf7 /core/bloombits/generator_test.go | |
parent | 4ea4d2dc3473afd9d2eda6ef6b359accce1f0946 (diff) | |
download | go-tangerine-f585f9eee8cb18423c23fe8b517b5b4cbe3b3755.tar.gz go-tangerine-f585f9eee8cb18423c23fe8b517b5b4cbe3b3755.tar.zst go-tangerine-f585f9eee8cb18423c23fe8b517b5b4cbe3b3755.zip |
core, eth: clean up bloom filtering, add some tests
Diffstat (limited to 'core/bloombits/generator_test.go')
-rw-r--r-- | core/bloombits/generator_test.go | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/core/bloombits/generator_test.go b/core/bloombits/generator_test.go new file mode 100644 index 000000000..f4aa9551c --- /dev/null +++ b/core/bloombits/generator_test.go @@ -0,0 +1,60 @@ +// 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/>. + +package bloombits + +import ( + "bytes" + "math/rand" + "testing" + + "github.com/ethereum/go-ethereum/core/types" +) + +// Tests that batched bloom bits are correctly rotated from the input bloom +// filters. +func TestGenerator(t *testing.T) { + // Generate the input and the rotated output + var input, output [types.BloomBitLength][types.BloomByteLength]byte + + for i := 0; i < types.BloomBitLength; i++ { + for j := 0; j < types.BloomBitLength; j++ { + bit := byte(rand.Int() % 2) + + input[i][j/8] |= bit << byte(7-j%8) + output[types.BloomBitLength-1-j][i/8] |= bit << byte(7-i%8) + } + } + // Crunch the input through the generator and verify the result + gen, err := NewGenerator(types.BloomBitLength) + if err != nil { + t.Fatalf("failed to create bloombit generator: %v", err) + } + for i, bloom := range input { + if err := gen.AddBloom(bloom); err != nil { + t.Fatalf("bloom %d: failed to add: %v", i, err) + } + } + for i, want := range output { + have, err := gen.Bitset(uint(i)) + if err != nil { + t.Fatalf("output %d: failed to retrieve bits: %v", i, err) + } + if !bytes.Equal(have, want[:]) { + t.Errorf("output %d: bit vector mismatch have %x, want %x", i, have, want) + } + } +} |