package handlers_test

import (
	"io"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestNotFound(t *testing.T) {
	app := PrepareApplication()

	req := httptest.NewRequest(http.MethodGet, "/some/invalid/path", nil)
	w := httptest.NewRecorder()

	app.Handler().ServeHTTP(w, req)
	res := w.Result()
	defer res.Body.Close()

	if res.StatusCode != 404 {
		t.Errorf("expected status to be 404, got %d", res.StatusCode)
	}

	reqId := res.Header.Get("x-request-id")
	if reqId == "" {
		t.Errorf("expected `x-request-id` header to be present, got %s", reqId)
	}

	data, err := io.ReadAll(res.Body)
	if err != nil {
		t.Errorf("expected error to be nil, got %v", err)
	}
	if !strings.Contains(string(data), reqId) {
		t.Errorf("expected body to contain request ID but it does not")
	}
}