You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: handler_execution_rules_test.go
    path of file: ./repos/iris/core/router
    
    the code of the file until where you have to start completion: package router_test

import (
	"testing"

	"github.com/kataras/iris/v12"
	"github.com/kataras/iris/v12/context"
	"github.com/kataras/iris/v12/core/router"
	"github.com/kataras/iris/v12/httptest"
)

va
    
func TestRouterExecutionRulesForceDone(t *testing.T) {
	app := iris.New()
	done := app.Party("/done_force")
	done.SetExecutionRules(router.ExecutionRules{Done: router.ExecutionOptions{Force: true}})

	// these done should be executed without `ctx.Next()`
	done.Done(writeStringHandler("3", false), writeStringHandler("4", false))
	// first with `ctx.Next()`, because Done.Force:True rule will alter the latest of the main handler(s) only.
	done.Get("/", writeStringHandler("1", true), writeStringHandler("2", false))

	// rules should be kept in children.
	doneChild := done.Party("/child")
	// even if only one, it's the latest, Done.Force:True rule should modify it.
	doneChild.Get("/", writeStringHandler("12", false))

	testExecutionResponse(t, app, "/done_force")
	testExecutionResponse(t, app, "/done_force/child")
}