mirror of
https://github.com/kataras/iris.git
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104 lines
2.7 KiB
Go
104 lines
2.7 KiB
Go
package router
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import (
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"bytes"
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"math/rand"
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"strings"
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"testing"
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"time"
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"github.com/kataras/iris/v12/context"
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)
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//
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// randStringBytesMaskImprSrc helps us to generate random paths for the test,
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// the below piece of code is external, as an answer to a stackoverflow question.
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//
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// START.
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const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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const (
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letterIdxBits = 6 // 6 bits to represent a letter index
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letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
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letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits
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)
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var src = rand.NewSource(time.Now().UnixNano())
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func randStringBytesMaskImprSrc(n int) string {
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b := make([]byte, n)
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// A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
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for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
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if remain == 0 {
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cache, remain = src.Int63(), letterIdxMax
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}
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if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
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b[i] = letterBytes[idx]
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i--
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}
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cache >>= letterIdxBits
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remain--
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}
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return strings.ToLower(string(b))
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}
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// END.
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func genPaths(routesLength, minCharLength, maxCharLength int) []string {
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// b := new(strings.Builder)
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b := new(bytes.Buffer)
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paths := make([]string, routesLength)
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pathStart := '/'
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for i := 0; i < routesLength; i++ {
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pathSegmentCharsLength := rand.Intn(maxCharLength-minCharLength) + minCharLength
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b.WriteRune(pathStart)
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b.WriteString(randStringBytesMaskImprSrc(pathSegmentCharsLength))
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b.WriteString("/{name:string}/") // sugar.
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b.WriteString(randStringBytesMaskImprSrc(pathSegmentCharsLength))
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b.WriteString("/{age:int}/end")
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paths[i] = b.String()
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b.Reset()
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}
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return paths
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}
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// Build 1296(=144*9(the available http methods)) routes
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// with up to 2*range(15-42)+ 2 named paths lowercase letters
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// and 12 request handlers each.
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//
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// GOCACHE=off && go test -run=XXX -bench=BenchmarkAPIBuilder$ -benchtime=10s
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func BenchmarkAPIBuilder(b *testing.B) {
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rand.Seed(time.Now().Unix())
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noOpHandler := func(ctx context.Context) {}
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handlersPerRoute := make(context.Handlers, 12)
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for i := 0; i < cap(handlersPerRoute); i++ {
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handlersPerRoute[i] = noOpHandler
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}
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routesLength := 144
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// i.e /gzhyweumidvelqewrvoyqmzopvuxli/{name:string}/bibrkratnrrhvsjwsxygfwmqwhcstc/{age:int}/end
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paths := genPaths(routesLength, 15, 42)
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api := NewAPIBuilder()
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requestHandler := NewDefaultHandler(nil)
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b.ReportAllocs()
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b.ResetTimer()
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for i := 0; i < routesLength; i++ {
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api.Any(paths[i], handlersPerRoute...)
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}
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if err := requestHandler.Build(api); err != nil {
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b.Fatal(err)
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}
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b.StopTimer()
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b.Logf("%d routes have just builded\n", len(api.GetRoutes()))
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}
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