package cache_test

import (
	"testing"
	"time"

	"anchorage/internal/pkg/cache"
)

func TestCacheRoundTrip(t *testing.T) {
	c, err := cache.New[string, int](cache.Options{
		Name:       "test",
		MaxCost:    1 << 20, // 1 MiB
		DefaultTTL: time.Minute,
	})
	if err != nil {
		t.Fatalf("New: %v", err)
	}
	defer c.Close()

	if !c.Set("a", 42, 1, 0) {
		t.Fatal("Set returned false for fresh key")
	}
	c.Wait()

	v, ok := c.Get("a")
	if !ok {
		t.Fatal("Get missed after Set")
	}
	if v != 42 {
		t.Errorf("Get = %d, want 42", v)
	}

	c.Delete("a")
	c.Wait()
	if _, ok := c.Get("a"); ok {
		t.Error("Get hit after Delete")
	}
}

func TestCacheRejectsBadConfig(t *testing.T) {
	_, err := cache.New[string, string](cache.Options{Name: "bad", MaxCost: 0})
	if err == nil {
		t.Error("expected error for MaxCost=0")
	}
}

func TestNameExposed(t *testing.T) {
	c, _ := cache.New[string, int](cache.Options{Name: "pin/byid", MaxCost: 1 << 16})
	defer c.Close()
	if c.Name() != "pin/byid" {
		t.Errorf("Name = %q", c.Name())
	}
}

func TestInvalidatorNilIsNoop(t *testing.T) {
	var inv *cache.Invalidator
	if err := inv.Emit("org", "org_xyz"); err != nil {
		t.Errorf("Emit on nil Invalidator should be a no-op, got %v", err)
	}
}