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reload_test.go
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reload_test.go
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package main
import (
"log"
"os"
"runtime"
"runtime/pprof"
"testing"
)
func TestReloadLeaks(t *testing.T) {
n := 10
maxObjectsDiff := int64(1000)
dataDir := "./data"
initDefaults()
appConfig, err := loadConfig(dataDir)
if err != nil {
log.Printf("unable to load configuration: %v", err)
return
}
applyConfig(appConfig)
var memStats runtime.MemStats
runtime.GC()
runtime.GC()
runtime.ReadMemStats(&memStats)
initialObjects := memStats.HeapObjects
initialSize := memStats.HeapAlloc
// Capture heap profile before reloading
beforeProfile, err := os.Create("profiles/reload-before.pprof")
if err != nil {
log.Printf("unable to create heap profile: %v", err)
return
}
pprof.WriteHeapProfile(beforeProfile)
beforeProfile.Close()
for i := 0; i < n; i++ {
applyConfig(appConfig)
runtime.GC()
runtime.ReadMemStats(&memStats)
objectsDiff := int64(memStats.HeapObjects) - int64(initialObjects)
sizeDiff := int64(memStats.HeapAlloc) - int64(initialSize)
log.Printf("after %v reloads, %v objects leaked, %.2f per reload, %v bytes leaked, %.2f per reload", i+1, objectsDiff, float64(objectsDiff)/float64(i+1), sizeDiff, float64(sizeDiff)/float64(i+1))
}
runtime.ReadMemStats(&memStats)
objectsDiff := int64(memStats.HeapObjects) - int64(initialObjects)
if objectsDiff > maxObjectsDiff {
t.Errorf("after %v reloads, %v objects leaked, %.2f per reload", n, objectsDiff, float64(objectsDiff)/float64(n))
}
// Capture heap profile after reloading
afterProfile, err := os.Create("profiles/reload-after.pprof")
if err != nil {
log.Printf("unable to create heap profile: %v", err)
return
}
pprof.WriteHeapProfile(afterProfile)
afterProfile.Close()
}
func BenchmarkReload(b *testing.B) {
dataDir := "./data"
initDefaults()
appConfig, err := loadConfig(dataDir)
if err != nil {
log.Printf("unable to load configuration: %v", err)
return
}
for i := 0; i < b.N; i++ {
applyConfig(appConfig)
}
}