package common

import (
	"testing"
	"time"

	"gitea.maximumdirect.net/ejr/feedkit/event"
)

func TestFinalizeRoundsWeatherPayloadFloats(t *testing.T) {
	type payload struct {
		Value float64
	}

	in := event.Event{
		ID:        "evt-1",
		Kind:      event.Kind("observation"),
		Source:    "source-a",
		EmittedAt: time.Date(2026, 3, 28, 12, 0, 0, 0, time.UTC),
		Schema:    "raw.example.v1",
		Payload:   map[string]any{"old": true},
	}

	out, err := Finalize(in, "weather.example.v1", payload{Value: 1.234567}, time.Time{})
	if err != nil {
		t.Fatalf("Finalize() unexpected error: %v", err)
	}

	got, ok := out.Payload.(payload)
	if !ok {
		t.Fatalf("Finalize() payload type = %T, want payload", out.Payload)
	}
	if got.Value != 1.2346 {
		t.Fatalf("Finalize() rounded value = %v, want 1.2346", got.Value)
	}
}