package api import ( "net/http" "net/http/httptest" "testing" ) func TestAuthentication(t *testing.T) { handler := func(w http.ResponseWriter, req *http.Request) { if user := GetUser(req); user != "natasha" { t.Error(user) } } req, err := http.NewRequest("GET", "http://example.com/foo?user=natasha", nil) if err != nil { t.Error(err) return } w := httptest.NewRecorder() AuthenticationMiddleware(handler)(w, req) if user := GetUser(req); user != "" { t.Error(user) } }