HTTP Status Checker

package main

import (
	"fmt"
	"net/http"
	"net/http/httptest"
)

func statusCode(handler http.Handler, path string) int {
	request := httptest.NewRequest(http.MethodGet, path, nil)
	recorder := httptest.NewRecorder()

	handler.ServeHTTP(recorder, request)
	return recorder.Result().StatusCode
}

func main() {
	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path == "/health" {
			w.WriteHeader(http.StatusOK)
			return
		}
		http.NotFound(w, r)
	})

	for _, path := range []string{"/health", "/missing"} {
		code := statusCode(handler, path)
		fmt.Printf("%s -> %d\n", path, code)
	}
}