github.com/creachadair/ffs@v0.17.3/block/bench_test.go (about)

     1  // Copyright 2021 Michael J. Fromberger. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package block_test
    16  
    17  import (
    18  	"math/rand"
    19  	"testing"
    20  
    21  	"github.com/creachadair/ffs/block"
    22  )
    23  
    24  func BenchmarkSplitter_Next(b *testing.B) {
    25  	src := rand.New(rand.NewSource(202109111241))
    26  	s := block.NewSplitter(src, nil)
    27  	b.ResetTimer()
    28  	for i := 0; i < b.N; i++ {
    29  		if _, err := s.Next(); err != nil {
    30  			b.Fatalf("Error from Next at i=%d of %d: %v", i, b.N, err)
    31  		}
    32  	}
    33  }
    34  
    35  func BenchmarkHasher_Update(b *testing.B) {
    36  	const windowSize = 48
    37  	b.Run("RabinKarp", func(b *testing.B) {
    38  		h := block.RabinKarpHasher(1031, 2147483659, windowSize).Hash()
    39  		b.ResetTimer()
    40  		for i := 0; i < b.N; i++ {
    41  			h.Update(196)
    42  		}
    43  	})
    44  }