tests: Add random.c and random.h files

The purpose of random.c file is to contain the helper
functions to generate random numbers that have been
in helpers.function so far.

The purpose of random.h is to contain the interface
exposed by random.c thus helper function prototypes.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>

tests/include/test/random.h

@@ -0,0 +1,35 @@
+/**
+ * \file random.h
+ *
+ * \brief   This file contains the prototypes of helper functions to generate
+ *          random numbers for the purpose of testing.
+ */
+
+/*  Copyright (C) 2020, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#ifndef TEST_RANDOM_H
+#define TEST_RANDOM_H
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#endif /* TEST_RANDOM_H */

tests/src/random.c

@@ -0,0 +1,26 @@
+/**
+ * \file random.c
+ *
+ * \brief   This file contains the helper functions to generate random numbers
+ *          for the purpose of testing.
+ */
+
+/*  Copyright (C) 2020, ARM Limited, All Rights Reserved
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#include <test/random.h>

tests/suites/helpers.function

@@ -4,6 +4,7 @@
 
 #include <test/macros.h>
 #include <test/helpers.h>
+#include <test/random.h>
 
 #include <stdlib.h>