https://github.com/elgohr/go-await

Testing concurrency in Go
https://github.com/elgohr/go-await

await concurrency go golang testing testing-tools

Last synced: about 1 year ago
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Testing concurrency in Go

• Host: GitHub
• URL: https://github.com/elgohr/go-await
• Owner: elgohr
• License: mit
• Created: 2019-01-01T12:29:24.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2019-06-04T06:32:01.000Z (about 7 years ago)
• Last Synced: 2024-05-01T12:35:20.469Z (about 2 years ago)
• Topics: await, concurrency, go, golang, testing, testing-tools
• Language: Go
• Homepage:
• Size: 6.84 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# go-await

Testing concurrency in Golang 

`go get -u github.com/elgohr/go-await`

## Chuck Norris doesn't sleep, he waits

I saw so many test code, where people are waiting on async execution by sleeping (time.Sleep).  

This is

* not efficient, as you may sleep longer for checking values then you would need

* not consistent , as you may sleep longer than your timeout

* dangerous, as some code didn't even have timeouts

In this way I'm trying to illustrate a way to do this easily, by using standard goroutines and channels.  

You may also use this as a library for not playing copy cat :-)

## Example

```

import ("github.com/elgohr/go-await/wait")

awaiting := make(chan interface{}, 1)

remoteServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

	awaiting <- r.Method

	w.WriteHeader(http.StatusOK)

}))

defer remoteServer.Close()

thisCouldBeYourAsyncFunction := func() {

	go func() {

		res, _ := http.Get(remoteServer.URL)

		defer res.Body.Close()

	}()

}

thisCouldBeYourAsyncFunction()

returns := wait.For(awaiting, 1*time.Second)

if returns != "GET" {

	t.Errorf("Expected GET, but got %v", returns)

}

```