package adaptive

import (
	"sync"
	"testing"
	"time"
)

func TestWorkloadAnalyzer_Basic(t *testing.T) {
	t.Parallel()
	wa := NewWorkloadAnalyzer(100 * time.Millisecond)
	wa.RecordAccess("steam/depot/1", 1024)
	wa.RecordAccess("steam/depot/2", 2048)
	_ = wa.GetDominantPattern()
	if info := wa.GetAccessInfo("steam/depot/1"); info != nil {
		_ = info.AccessCount
	}
	wa.Stop()
}

func TestAdaptiveCacheManager_Basic(t *testing.T) {
	t.Parallel()
	acm := NewAdaptiveCacheManager(50 * time.Millisecond)
	acm.RecordAccess("k", 100)
	_ = acm.GetCurrentStrategy()
	_ = acm.GetAdaptationCount()
	acm.Stop()
}

// TestAdaptiveAnalyzer_UnderLoad + concurrent Record (improves 0% paths for analyzer goroutine per issue11).
func TestAdaptiveAnalyzer_UnderLoad(t *testing.T) {
	t.Parallel()
	wa := NewWorkloadAnalyzer(20 * time.Millisecond)
	var wg sync.WaitGroup
	for i := 0; i < 4; i++ {
		wg.Add(1)
		go func(id int) {
			defer wg.Done()
			for j := 0; j < 30; j++ {
				wa.RecordAccess("p"+string(rune('0'+id)), int64(j*100))
			}
		}(i)
	}
	wg.Wait()
	_ = wa.GetDominantPattern()
	wa.Stop()
}