github.com/illua1/go-helpful@v0.0.0-20220621193642-cdc195fe0958/Slise/Slise_bench_test.go (about)

     1  package helpful_slise
     2  
     3  import (
     4  	"runtime"
     5  	"testing"
     6  )
     7  
     8  const (
     9  	count   = 100
    10  	lengths = 10000
    11  )
    12  
    13  func BenchmarkJoin(b *testing.B) {
    14  	b.StopTimer()
    15  	list := make([][]int, count)
    16  	Fill(list, func(index int) []int { return make([]int, lengths) })
    17  	b.StartTimer()
    18  
    19  	Join(list...)
    20  
    21  	list = nil
    22  	runtime.GC()
    23  }
    24  
    25  func BenchmarkJoinSimpleAppend(b *testing.B) {
    26  	b.StopTimer()
    27  	list := make([][]int, count)
    28  	Fill(list, func(index int) []int { return make([]int, lengths) })
    29  	b.StartTimer()
    30  
    31  	var unioned []int
    32  	for i := range list {
    33  		unioned = append(unioned, list[i]...)
    34  	}
    35  
    36  	unioned = nil
    37  	runtime.GC()
    38  }
    39  
    40  func BenchmarkCopyToFast(b *testing.B) {
    41  	b.StopTimer()
    42  	list := make([]int, 1000000)
    43  	b.StartTimer()
    44  	CopyTo(list, 54)
    45  }
    46  
    47  func BenchmarkCopyToSimple(b *testing.B) {
    48  	b.StopTimer()
    49  	list := make([]int, 1000000)
    50  	b.StartTimer()
    51  	for i := 0; i < len(list); i++ {
    52  		list[i] = 54
    53  	}
    54  }