github.com/parquet-go/parquet-go@v0.21.1-0.20240501160520-b3c3a0c3ed6f/bloom/bloom_test.go (about)

     1  package bloom
     2  
     3  import (
     4  	"math/rand"
     5  	"testing"
     6  )
     7  
     8  // Test file for internal functions of the bloom package.
     9  var global4x64 [4]uint64
    10  
    11  func TestFasthash(t *testing.T) {
    12  	r := rand.NewSource(0).(rand.Source64)
    13  
    14  	src := [4]uint64{r.Uint64(), r.Uint64(), r.Uint64(), r.Uint64()}
    15  	dst := [4]uint64{0, 0, 0, 0}
    16  	exp := [4]uint64{483, 125, 335, 539}
    17  	mod := int32(1024)
    18  
    19  	fasthash4x64(&dst, &src, mod)
    20  
    21  	if dst != exp {
    22  		t.Errorf("got=%v want=%v", dst, exp)
    23  	}
    24  }
    25  
    26  func BenchmarkFasthash(b *testing.B) {
    27  	src := [4]uint64{}
    28  	dst := [4]uint64{}
    29  	mod := int32(1024)
    30  
    31  	for i := 0; i < b.N; i++ {
    32  		fasthash4x64(&dst, &src, mod)
    33  	}
    34  
    35  	b.SetBytes(32)
    36  	global4x64 = dst // use it so the loop isn't optimized away
    37  }