diff --git a/tests/unit/security/transform/bool-sink.t.cpp b/tests/unit/security/transform/bool-sink.t.cpp
index f287e1c..a7640c6 100644
--- a/tests/unit/security/transform/bool-sink.t.cpp
+++ b/tests/unit/security/transform/bool-sink.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2018 Regents of the University of California.
+ * Copyright (c) 2013-2021 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -34,23 +34,23 @@
 
 BOOST_AUTO_TEST_CASE(Basic)
 {
-  uint8_t in1[] = {0x00, 0x01};
+  const uint8_t in1[] = {0x00, 0x01};
   bool value1 = true;
   BoolSink sink1(value1);
-  BOOST_CHECK_EQUAL(sink1.write(in1, 1), 1);
-  BOOST_CHECK_EQUAL(sink1.write(in1 + 1, 1), 1);
+  BOOST_CHECK_EQUAL(sink1.write({in1, 1}), 1);
+  BOOST_CHECK_EQUAL(sink1.write({in1 + 1, 1}), 1);
   sink1.end();
   BOOST_CHECK_EQUAL(value1, false);
-  BOOST_CHECK_THROW(sink1.write(in1 + 1, 1), transform::Error);
+  BOOST_CHECK_THROW(sink1.write({in1 + 1, 1}), transform::Error);
 
-  uint8_t in2[] = {0x01, 0x00};
+  const uint8_t in2[] = {0x01, 0x00};
   bool value2 = false;
   BoolSink sink2(value2);
-  BOOST_CHECK_EQUAL(sink2.write(in2, 1), 1);
-  BOOST_CHECK_EQUAL(sink2.write(in2 + 1, 1), 1);
+  BOOST_CHECK_EQUAL(sink2.write({in2, 1}), 1);
+  BOOST_CHECK_EQUAL(sink2.write({in2 + 1, 1}), 1);
   sink2.end();
   BOOST_CHECK_EQUAL(value2, true);
-  BOOST_CHECK_THROW(sink2.write(in2 + 1, 1), transform::Error);
+  BOOST_CHECK_THROW(sink2.write({in2 + 1, 1}), transform::Error);
 }
 
 BOOST_AUTO_TEST_SUITE_END() // TestBoolSink