package metrics

// Tests for Prometheus metrics registration with a custom registry.

import (
	"testing"

	"github.com/prometheus/client_golang/prometheus"
	"github.com/stretchr/testify/require"
)

// TestNewMetrics_WithCustomRegistry verifies metrics register on a provided registry.
func TestNewMetrics_WithCustomRegistry(t *testing.T) {
	registry := prometheus.NewRegistry()
	m := NewMetrics(Config{ServiceName: "svc", Enabled: true, Registry: registry})

	require.NotNil(t, m)
	require.NotNil(t, m.HTTPRequestsTotal)
	require.NotNil(t, m.DBConnectionsActive)
	require.NotNil(t, m.ScoreDistribution)
}