package main

import (
	"strings"
	"testing"

	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/loadsim"
)

func TestFormatStatsIncludesCapacityCounters(t *testing.T) {
	out := formatStats(loadsim.Stats{
		ConnectionsOpened: 10,
		ConnectionsFailed: 2,
		FramesWritten:     300,
		WriteErrors:       1,
	})

	for _, want := range []string{
		"connections_opened=10",
		"connections_failed=2",
		"frames_written=300",
		"write_errors=1",
	} {
		if !strings.Contains(out, want) {
			t.Fatalf("formatStats() = %q, missing %q", out, want)
		}
	}
}