/
benchmark_test.go
91 lines (85 loc) · 1.49 KB
/
benchmark_test.go
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package prattle
import (
"fmt"
"math/rand"
"strings"
"testing"
"unicode"
)
var wordlist = []string{
"aardvark",
"babbling",
"cabin",
"dachshund",
"eagerness",
"fabric",
"gadget",
"habitat",
"ibuprofen",
"jabbering",
"kabob",
"laboratory",
"macaroni",
"nail",
"oasis",
"pacemaker",
"quarters",
"racoon",
"sabotage",
"tablespoon",
"ultrasound",
"vacuum",
"waffle",
"xerox",
"yacht",
"zealot",
}
func genWords(n int, rng *rand.Rand) string {
var sb strings.Builder
j := rng.Intn(len(wordlist))
sb.WriteString(wordlist[j])
for i := 1; i < n; i++ {
j := rng.Intn(len(wordlist))
fmt.Fprintf(&sb, "%s ", wordlist[j])
}
return sb.String()
}
func scanWords(s *Scanner) int {
s.ExpectAny(unicode.IsSpace)
s.Skip()
switch {
case s.Done():
return 0
case s.ExpectOne(unicode.IsLetter):
s.ExpectAny(unicode.IsLetter)
return 1
}
s.Advance()
return -1
}
func BenchmarkScannerWithString(b *testing.B) {
b.ReportAllocs()
rng := rand.New(rand.NewSource(0))
words := genWords(2048, rng)
s := Scanner{Scan: scanWords}
b.ResetTimer()
for i := 0; i < b.N; i++ {
s.InitWithString(words)
for _, ok := s.Next(); ok; _, ok = s.Next() {
}
}
}
func BenchmarkScannerWithReader(b *testing.B) {
b.ReportAllocs()
rng := rand.New(rand.NewSource(0))
words := genWords(2048, rng)
s := Scanner{Scan: scanWords}
r := strings.NewReader(words)
b.ResetTimer()
for i := 0; i < b.N; i++ {
r.Reset(words)
s.InitWithReader(r)
for _, ok := s.Next(); ok; _, ok = s.Next() {
}
}
}