Example
main.go:
package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
)
func fetchContent(url string) (string, error) {
res, err := http.Get(url)
if err != nil {
return "", nil
}
defer res.Body.Close()
body, err := ioutil.ReadAll(res.Body)
if err != nil {
return "", err
}
return string(body), nil
}
func main() {
url := "https://example.com/"
content, err := fetchContent(url)
if err != nil {
log.Fatal(err)
}
fmt.Println("Content:", content)
}
main_test.go:
package main
import (
"fmt"
"net/http"
"net/http/httptest"
"testing"
)
func Test_fetchContent(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "hello world")
}))
defer ts.Close()
content, err := fetchContent(ts.URL)
if err != nil {
t.Error(err)
}
want := "hello world"
if content != want {
t.Errorf("Got %q, want %q", content, want)
}
}
