package predictive

import (
	"testing"
)

func TestAccessPredictor_Basic(t *testing.T) {
	t.Parallel()
	p := NewAccessPredictor()
	p.RecordSequence("a/b/c1", "a/b/c2")
	next := p.PredictNext("a/b/c1")
	if len(next) == 0 {
		t.Log("no predictions (cold start ok)")
	}
	_ = p.IsPredictedAccess("a/b/c2")
}

func TestCacheWarmer_Basic(t *testing.T) {
	t.Parallel()
	cw := NewCacheWarmer()
	cw.RecordAccess("k1", 100)
	cw.RecordAccess("k1", 100)
	pop := cw.GetPopularContent(5)
	_ = len(pop)
	_ = NewWarmingStats()
	_ = NewActiveWarmer("k", 1, "test")
}

// TestPredictiveCacheManager_ConstructAndStop exercises New + RecordAccess under load + worker + Stop (no leak/panic; issue11).
func TestPredictiveCacheManager_ConstructAndStop(t *testing.T) {
	t.Parallel()
	pm := NewPredictiveCacheManager()
	for i := 0; i < 20; i++ {
		k := "k" + string(rune('0'+i%5))
		pm.RecordAccess(k, "", 100) // use actual API (RecordAccess); exercises warmer+predictor paths
	}
	// Stop exercises wg + cancel for workers
	pm.Stop()
	// double stop safe
	pm.Stop()
}