* test/src/json-tests.el (json-serialize, json-insert)
(json-parse-string, json-parse-buffer): Declare.
(require 'cl-lib)
(require 'map)
+(declare-function json-serialize "json.c" (object))
+(declare-function json-insert "json.c" (object))
+(declare-function json-parse-string "json.c" (string &rest args))
+(declare-function json-parse-buffer "json.c" (&rest args))
+
(define-error 'json-tests--error "JSON test error")
(ert-deftest json-serialize/roundtrip ()