tests/unittest: added tests for MD5

tests/unittests/tests-hashes/Makefile

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+include $(RIOTBASE)/Makefile.base

tests/unittests/tests-hashes/Makefile.include

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+USEMODULE += hashes

tests/unittests/tests-hashes/tests-hashes-md5.c

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+/*
+ * Copyright (C) 2015 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     unittests
+ * @{
+ *
+ * @file
+ * @brief       Test cases for the MD5 hash implementation
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "embUnit/embUnit.h"
+
+#include "hashes/md5.h"
+
+#define MD5_DIGEST_LENGTH           (16U)
+
+static int calc_and_compare_hash(const char *str, const char *expected)
+{
+    uint8_t hash[MD5_DIGEST_LENGTH];
+    char tmp[(2 * MD5_DIGEST_LENGTH) + 1];
+
+    /* calculate hash */
+    md5(hash, (const uint8_t *)str, strlen(str));
+    /* copy hash to string */
+    for (size_t i = 0; i < MD5_DIGEST_LENGTH; i++) {
+        sprintf(&(tmp[i * 2]), "%02x", hash[i]);
+    }
+    tmp[MD5_DIGEST_LENGTH * 2] = '\0';
+    /* compare with result string */
+    return strncmp(tmp, expected, strlen(tmp));
+}
+
+/* test cases copied from appendix A.5 of RFC 1321 */
+static void test_hashes_md5(void)
+{
+    TEST_ASSERT(calc_and_compare_hash("",
+                "d41d8cd98f00b204e9800998ecf8427e") == 0);
+    TEST_ASSERT(calc_and_compare_hash("a",
+                "0cc175b9c0f1b6a831c399e269772661") == 0);
+    TEST_ASSERT(calc_and_compare_hash("abc",
+                "900150983cd24fb0d6963f7d28e17f72") == 0);
+    TEST_ASSERT(calc_and_compare_hash("message digest",
+                "f96b697d7cb7938d525a2f31aaf161d0") == 0);
+    TEST_ASSERT(calc_and_compare_hash("abcdefghijklmnopqrstuvwxyz",
+                "c3fcd3d76192e4007dfb496cca67e13b") == 0);
+    TEST_ASSERT(calc_and_compare_hash(
+                "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
+                "d174ab98d277d9f5a5611c2c9f419d9f") == 0);
+    TEST_ASSERT(calc_and_compare_hash(
+                "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
+                "57edf4a22be3c955ac49da2e2107b67a") == 0);
+}
+
+Test *tests_hashes_md5_tests(void)
+{
+    EMB_UNIT_TESTFIXTURES(fixtures) {
+        new_TestFixture(test_hashes_md5),
+    };
+
+    EMB_UNIT_TESTCALLER(test_hashes_md5, NULL, NULL, fixtures);
+
+    return (Test *)&test_hashes_md5;
+}

tests/unittests/tests-hashes/tests-hashes.c

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+/*
+ * Copyright (C) 2015 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     unittests
+ * @{
+ *
+ * @file
+ * @brief       Central test setup file for the hashing module
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ *
+ * @}
+ */
+
+#include "tests-hashes.h"
+
+void tests_hashes(void)
+{
+    TESTS_RUN(tests_hashes_md5_tests());
+}

tests/unittests/tests-hashes/tests-hashes.h

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+/*
+ * Copyright (C) 2015 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @addtogroup  unittests
+ * @{
+ *
+ * @file
+ * @brief       Unittests for the ``hashes`` module
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ */
+
+#ifndef TESTS_HASHES_H_
+#define TESTS_HASHES_H_
+
+#include "embUnit.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   The entry point of this test suite.
+ */
+void tests_hashes(void);
+
+/**
+ * @brief   Generates tests for hashes/md5.h
+ *
+ * @return  embUnit tests if successful, NULL if not.
+ */
+Test *tests_hashes_md5_tests(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TESTS_CRYPTO_H_ */
+/** @} */