package httpserver import ( "net/http/httptest" "testing" ) func TestHandlerServeHTTP(t *testing.T) { w := httptest.NewRecorder() r := httptest.NewRequest("GET", "/", nil) h := handler{} h.ServeHTTP(w, r) if w.Code != 200 { t.Errorf("expected HTTP 200, got: %d", w.Code) } }