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: future_test.go
    path of file: ./repos/milvus/pkg/util/conc
    
    the code of the file until where you have to start completion: // Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may 
    
func (s *FutureSuite) TestFuture() {
	const sleepDuration = 200 * time.Millisecond
	errFuture := Go(func() (any, error) {
		time.Sleep(sleepDuration)
		return nil, errors.New("errFuture")
	})

	resultFuture := Go(func() (int, error) {
		time.Sleep(sleepDuration)
		return 10, nil
	})

	s.False(errFuture.OK())
	s.True(resultFuture.OK())
	s.Error(errFuture.Err())
	s.Equal(10, resultFuture.Value())
}