fixup! NXD blob/auth: Teach it to handle HTTP Basic Auth too

Adjust the test because download-archive format has been changed (see
fixup to first patch in nxd series), while `git fetch` expects the old
way.

main_test.go

@@ -872,6 +872,7 @@ func TestPrivateBlobDownload(t *testing.T) {
 	// access is ok if token is provided either via query or via header
 	ts := testhelper.TestServerWithHandler(nil, func(w http.ResponseWriter, r *http.Request) {
 		log.Println("UPSTREAM", r.Method, r.URL)
+		gitfetch := (strings.HasSuffix(r.URL.Path, "/info/refs") && r.URL.RawQuery == "service=git-upload-pack")
 		token_ok1 := r.URL.Query().Get("aaa_token") == "TOKEN-4AAA"
 		token_ok2 := r.Header.Get("BBB-TOKEN") == "TOKEN-4BBB"
 		cookie, _ := r.Cookie("_gitlab_session")
@@ -879,9 +880,7 @@ func TestPrivateBlobDownload(t *testing.T) {
 		username, password, user_ok4 := r.BasicAuth()
 		if user_ok4 {
 			// user:password only accepted for `git fetch` requests
-			user_ok4 = (strings.HasSuffix(r.URL.Path, "/info/refs") &&
-				r.URL.RawQuery == "service=git-upload-pack" &&
-				username == "user-ddd" && password == "password-eee")
+			user_ok4 = (gitfetch && username == "user-ddd" && password == "password-eee")
 		}
 		if !(token_ok1 || token_ok2 || cookie_ok3 || user_ok4) {
 			w.WriteHeader(403)
@@ -889,6 +888,18 @@ func TestPrivateBlobDownload(t *testing.T) {
 			return
 		}
 
+		// `git fetch` expects json in body, not senddata-compatible headers
+		if gitfetch {
+			data, err := json.Marshal(gitOkBody(t))
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			w.WriteHeader(200)
+			w.Write(data)
+			return
+		}
+
 		// for authorized .../repository/archive.zip reply the same way archiveOKServer does.
 		aok := archiveOKServer(t, "")
 		defer aok.Close()