inet: add ether_aton testcase

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

test/inet/tst-ether_aton.c

@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <netinet/ether.h>
+
+static struct tests
+{
+  const char *input;
+  int valid;
+  uint8_t result[6];
+} tests[] =
+{
+  { "", 0, {0, 0, 0, 0, 0, 0} },
+  { "AB:CD:EF:01:23:45", 1, {171, 205, 239, 1, 35, 69} },
+  { "\022B:BB:BB:BB:BB:BB", 0, {0, 0, 0, 0, 0, 0} }
+};
+
+
+int
+main (int argc, char *argv[])
+{
+  int result = 0;
+  size_t cnt;
+
+  for (cnt = 0; cnt < sizeof (tests) / sizeof (tests[0]); ++cnt)
+    {
+      struct ether_addr *addr;
+
+      if (!!(addr = ether_aton (tests[cnt].input)) != tests[cnt].valid)
+      {
+        if (tests[cnt].valid)
+          printf ("\"%s\" not seen as valid MAC address\n", tests[cnt].input);
+        else
+          printf ("\"%s\" seen as valid MAC address\n", tests[cnt].input);
+        result = 1;
+      }
+      else if (tests[cnt].valid
+               && memcmp(addr, &tests[cnt].result, sizeof(struct ether_addr)))
+      {
+        printf ("\"%s\" not converted correctly\n", tests[cnt].input);
+        result = 1;
+      }
+    }
+
+  return result;
+}