lib: Add test for crc32 function

2 files changed, 72 insertions, 0 deletions

diff --git a/src/lib/tests/CMakeLists.txt b/src/lib/tests/CMakeLists.txt
index 92a4579a..85535399 100644
--- a/src/lib/tests/CMakeLists.txt
+++ b/src/lib/tests/CMakeLists.txt
@@ -4,6 +4,7 @@ get_filename_component(PARENT_DIR ${PARENT_PATH} NAME)
 create_test_sourcelist(${PARENT_DIR}_tests test_suite.c
                        # Add new tests here
                        bitmap_test.c
+                       crc32_test.c
                        hashtable_test.c
                        sha3_test.c
 )
diff --git a/src/lib/tests/crc32_test.c b/src/lib/tests/crc32_test.c
new file mode 100644
index 00000000..563d23b0
--- /dev/null
+++ b/src/lib/tests/crc32_test.c
@@ -0,0 +1,71 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Test of the CRC32 function
+ *
+ *    Dimitri Staessens <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <ouroboros/crc32.h>
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+
+/*
+ * Test vectors calculated at
+ * https://www.lammertbies.nl/comm/info/crc-calculation.html
+ */
+
+int crc32_test(int     argc,
+               char ** argv)
+{
+        uint32_t crc = 0;
+        int i = 0;
+
+        (void) argc;
+        (void) argv;
+
+        crc32(&crc, "0", 1);
+        if (crc != 0xF4DBDF21)
+                return -1;
+
+        crc = 0;
+
+        crc32(&crc, "123456789", 9);
+        if (crc != 0xCBF43926)
+                return -1;
+
+        crc = 0;
+
+        crc32(&crc, "987654321", 9);
+        if (crc != 0x015F0201)
+                return -1;
+
+        crc32(&crc, "123456789", 9);
+        if (crc != 0x806B60E3)
+                return -1;
+
+        crc = 0;
+
+        crc32(&crc, &i , 1);
+        if (crc != 0xD202EF8D)
+                return -1;
+
+        return 0;
+}