package briefing

import (
	"reflect"
	"testing"

	"gitea.maximumdirect.net/eric/weatherreporter/internal/weatherdata"
)

func TestPreparedIdentityCopiesMutableFields(t *testing.T) {
	moduleContext := testModuleContext()
	context := BuildContext{
		Resolved: moduleContext.Resolved,
		Bundle:   moduleContext.Collected.Bundle(),
		Units:    moduleContext.Units,
		Timezone: moduleContext.Timezone,
		Location: moduleContext.Location,
	}
	identity := BuildPreparedIdentity(context)
	originalWarnings := append([]weatherdata.SourceWarning(nil), moduleContext.Collected.SourceWarnings...)
	identity.Location.Name = "consumer mutation"
	identity.SourceWarnings = append(identity.SourceWarnings, moduleContext.Collected.SourceWarnings[0])
	if moduleContext.Location.Name == "consumer mutation" || !reflect.DeepEqual(moduleContext.Collected.SourceWarnings, originalWarnings) {
		t.Fatalf("prepared identity changed its source context: %#v", identity)
	}
}