--- /dev/null
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "test_util.h"
+
+#include <ostream>
+
+#include "../internal.h"
+
+
+void hexdump(FILE *fp, const char *msg, const void *in, size_t len) {
+ const uint8_t *data = reinterpret_cast<const uint8_t*>(in);
+
+ fputs(msg, fp);
+ for (size_t i = 0; i < len; i++) {
+ fprintf(fp, "%02x", data[i]);
+ }
+ fputs("\n", fp);
+}
+
+std::ostream &operator<<(std::ostream &os, const Bytes &in) {
+ // Print a byte slice as hex.
+ static const char hex[] = "0123456789abcdef";
+ for (size_t i = 0; i < in.len; i++) {
+ os << hex[in.data[i] >> 4];
+ os << hex[in.data[i] & 0xf];
+ }
+ return os;
+}