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: structs_test.go
    path of file: ./repos/structs
    
    the code of the file until where you have to start completion: package structs

import (
	"fmt"
	"reflect"
	"testing"
	"time"
)

func TestMapN
    
func TestSetValueOnNestedField(t *testing.T) {
	type Base struct {
		ID int
	}

	type User struct {
		Base
		Name string
	}

	u := User{}
	s := New(&u)
	f := s.Field("Base").Field("ID")
	err := f.Set(10)
	if err != nil {
		t.Errorf("Error %v", err)
	}
	if f.Value().(int) != 10 {
		t.Errorf("Value should be equal to 10, got %v", f.Value())
	}
}