Create http.Response instance with sample body string in golang

As suggested by Not_a_Golfer and JimB:

io.ReadCloser is an interface that is satisfied when a struct implements both the Read and the Close functions.

Fortunately, there is io.NopCloser, which takes a io.Reader and wraps it in the nopCloser struct, which implements both Read and Close. However, its Close function does nothing as implied from the name.

Here is an example:

package main

import (
    "bytes"
    "fmt"
    "io"
    "net/http"
)

func main() {
    t := http.Response{
        Body: io.NopCloser(bytes.NewBufferString("Hello World")),
    }

    buff := bytes.NewBuffer(nil)
    t.Write(buff)

    fmt.Println(buff)
}

To play with the code, click here.