100 lines
3.0 KiB
Go
100 lines
3.0 KiB
Go
// 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(uint(i), 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)
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkGenerator(b *testing.B) {
|
|
var input [types.BloomBitLength][types.BloomByteLength]byte
|
|
b.Run("empty", func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
// Crunch the input through the generator and verify the result
|
|
gen, err := NewGenerator(types.BloomBitLength)
|
|
if err != nil {
|
|
b.Fatalf("failed to create bloombit generator: %v", err)
|
|
}
|
|
for j, bloom := range input {
|
|
if err := gen.AddBloom(uint(j), bloom); err != nil {
|
|
b.Fatalf("bloom %d: failed to add: %v", i, err)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
for i := 0; i < types.BloomBitLength; i++ {
|
|
rand.Read(input[i][:])
|
|
}
|
|
b.Run("random", func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
// Crunch the input through the generator and verify the result
|
|
gen, err := NewGenerator(types.BloomBitLength)
|
|
if err != nil {
|
|
b.Fatalf("failed to create bloombit generator: %v", err)
|
|
}
|
|
for j, bloom := range input {
|
|
if err := gen.AddBloom(uint(j), bloom); err != nil {
|
|
b.Fatalf("bloom %d: failed to add: %v", i, err)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|