Index: coverage.sh
==================================================================
--- coverage.sh
+++ coverage.sh
@@ -4,10 +4,12 @@
 : ${LCOV_DATA:=coverage/test-info.dat}
 : ${LCOV_HTML_DIR:=coverage}
 : ${TEST_LOG:=coverage.log}
 
 ${GNATPATH}/gnatmake -p -Ptests -XMODE=Coverage || exit $?
+${GNATPATH}/gnatmake -p -Ptools -XMODE=Coverage || exit $?
 lcov --directory coverage/obj --zerocounters
 coverage/bin/test_all > "${TEST_LOG}"
+tools/tests.sh coverage/bin
 tail -n 4  "${TEST_LOG}"
 lcov --gcov-tool ${GNATPATH}/gcov --directory coverage/obj --output "${LCOV_DATA}" --capture || exit $?
 genhtml --output-dir "${LCOV_HTML_DIR}" "${LCOV_DATA}"

ADDED   tools/tests.sh
Index: tools/tests.sh
==================================================================
--- tools/tests.sh
+++ tools/tests.sh
@@ -0,0 +1,93 @@
+#!/bin/sh
+
+: ${BIN_DIR:=${1:-$(dirname $0)}}
+: ${TMP_TEMPLATE:=/tmp/tmp.XXXXXX}
+
+RET_VAL="0"
+
+if ! test -x ${BIN_DIR}/hmac-md5 \
+   -o -x ${BIN_DIR}/hmac-sha1 \
+   -o -x ${BIN_DIR}/hmac-sha256; then
+	echo "Unable to find tested executables in ${BIN_DIR}, aborting" >&2
+	exit 2
+fi
+
+
+####################
+# Test of hmac-md5 #
+####################
+
+if test -x ${BIN_DIR}/hmac-md5; then
+	OUTPUT=$("${BIN_DIR}"/hmac-md5 '' '')
+	if test "${OUTPUT}" != "74e6f7298a9c2d168935f58c001bad88"; then
+		echo "Wrong output for HMAC-MD5('', ''): ${OUTPUT}"
+		RET_VAL="1"
+	fi;
+
+	MSG="what do ya want for nothing?"
+	OUTPUT=$(printf "Jefe\n${MSG}" \
+	    | "${BIN_DIR}"/hmac-md5 -r -f - \
+	    | xxd -p)
+	if test "${OUTPUT}" != "750c783e6ab0b503eaa86e310a5db738"; then
+		echo "Wrong output for HMAC-MD5('Jefe', '${MSG}'): ${OUTPUT}"
+		RET_VAL="1"
+	fi;
+else
+	echo "${BIN_DIR}/hmac-md5 not found"
+fi
+
+
+#####################
+# Test of hmac-sha1 #
+#####################
+
+if test -x ${BIN_DIR}/hmac-sha1; then
+	OUTPUT=$("${BIN_DIR}"/hmac-sha1 -H '' '')
+	if test "${OUTPUT}" != "FBDB1D1B18AA6C08324B7D64B71FB76370690E1D"; then
+		echo "Wrong output for HMAC-SHA1('', ''): ${OUTPUT}"
+		RET_VAL="1"
+	fi;
+
+	MSG="The quick brown fox jumps over the lazy dog"
+	OUTPUT=$(echo -n "${MSG}" \
+	    | "${BIN_DIR}"/hmac-sha1 -b "key")
+	if test "${OUTPUT}" != "3nybhbi3iqa8ino29wqQcBydtNk="; then
+		echo "Wrong output for HMAC-SHA1('key', '${MSG}'): ${OUTPUT}"
+		RET_VAL="1"
+	fi;
+else
+	echo "${BIN_DIR}/hmac-sha1 not found"
+fi
+
+
+#######################
+# Test of hmac-sha256 #
+#######################
+
+if test -x ${BIN_DIR}/hmac-sha256; then
+	TMP_FILE=$(mktemp "${TMP_TEMPLATE}")
+	OUTPUT=$("${BIN_DIR}"/hmac-sha256 -h -f "${TMP_FILE}" '')
+	if test "${OUTPUT}" != "b613679a0814d9ec772f95d778c35fc5ff1697c493715653c6c712144292c5ad"; then
+		echo "Wrong output for HMAC-SHA256('', ''): ${OUTPUT}"
+		RET_VAL="1"
+	fi;
+
+	echo 0102030405060708090a0b0c0d0e0f10111213141516171819 \
+	    | xxd -r -p \
+	    >"${TMP_FILE}"
+
+	OUTPUT=$(echo cdcdcdcdcdcdcdcdcdcd cdcdcdcdcdcdcdcdcdcd \
+	              cdcdcdcdcdcdcdcdcdcd cdcdcdcdcdcdcdcdcdcd \
+	              cdcdcdcdcdcdcdcdcdcd \
+	    | xxd -r -p \
+	    | "${BIN_DIR}"/hmac-sha256 -b -f "${TMP_FILE}")
+	if test "${OUTPUT}" != "glWKOJpEPA6kzIGYmfIIOoXw+qPlePgHei4/9GcpZls="; then
+		echo "Wrong output for HMAC-SHA256(...): ${OUTPUT}"
+		RET_VAL="1"
+	fi;
+	rm "${TMP_FILE}"
+else
+	echo "${BIN_DIR}/hmac-sha256 not found"
+fi
+
+exit ${RET_VAL}