#Go

Basics go test tests packages as it is stated below. > go test -h test [build/test flags] [packages] [build/test flags & test binary flags] So given a package, go test runs both in package tests and outside package tests. > go test github.com/haibin/coverage/person ok github.com/haibin/coverage/person 0.007s To list in package tests, run the following. > go list -f '{{.TestGoFiles}}' github.com/haibin/coverage/person [foo_test.go] To list outside package tests, run the following. [Read More]

We can quickly start a http server in go as below. http.ListenAndServe(":8080", nil) It is called ListenAndServe because it creates a TCP listener and passes it to the http server. ln, err := net.Listen("tcp", addr) srv.Serve(ln) The actual implementation in the go standard library uses a tcpKeepAliveListener which wraps the TCP listener. srv.Serve(tcpKeepAliveListener{ln.(*net.TCPListener)}) tcpKeepAliveListener implements the TCP keep-alives which might not be very important because HTTP keep-alives are enabled by default. [Read More]

	wURL, _ := url.Parse(str)
	q := wURL.Query()
	q.Add("q", "abc")
	wURL.RawQuery = q.Encode()

An interesting example of making a copy of URL in go https://github.com/go-kit/kit/blob/master/examples/addsvc/pkg/addtransport/http.go#L123

func copyURL(base *url.URL, path string) *url.URL {
	next := *base
	next.Path = path
	return &next
}