diff --git a/test/val/lib_common_strdup.c b/test/val/lib_common_strdup.c
new file mode 100644
index 000000000..748317017
--- /dev/null
+++ b/test/val/lib_common_strdup.c
@@ -0,0 +1,60 @@
+#include <string.h>
+#include "unittest.h"
+
+#define SHORT_STR "abcdefghijklmnopqrstuvwxyz"
+
+#define MID_STR_LEN 700 /* Two pages and something */
+#define LONG_STR_LEN 40000UL /* Two long to duplicate */
+TEST
+{
+    char *dst;
+    char *src;
+    int i;
+
+    dst = strdup("");
+    ASSERT_IsTrue(dst != NULL, "strdup returned NULL")
+    ASSERT_IsTrue(!strcmp(dst, ""), "strings differ");
+    free(dst);
+
+    dst = strdup(SHORT_STR);
+    ASSERT_IsTrue(dst != NULL, "strdup returned NULL");
+    ASSERT_IsTrue(strlen(dst) == strlen(SHORT_STR), "string lengths differ");
+    ASSERT_IsTrue(!strcmp(dst, SHORT_STR), "strings differ");
+    free(dst);
+    
+    src = malloc(MID_STR_LEN+1);
+    ASSERT_IsTrue(src != NULL, "Could not allocate source string");
+    memset(src, 'a', MID_STR_LEN-1);
+    src[MID_STR_LEN] = '\0';
+
+    dst = strdup(src);
+    ASSERT_IsTrue(dst != NULL, "strdup returned NULL");
+    printf("strlens %zu %zu\n", strlen(src), strlen(dst));
+    ASSERT_IsTrue(strlen(dst) == strlen(src), "string lengths differ");
+    ASSERT_IsTrue(!strcmp(dst, src), "strings differ");
+    free(dst);
+    free(src);
+
+    src = malloc(LONG_STR_LEN+1);
+    ASSERT_IsTrue(src != NULL, "Could not allocate source string");
+    memset(src, 'a', LONG_STR_LEN-1);
+    src[LONG_STR_LEN] = '\0';
+
+    dst = strdup(src);
+    ASSERT_IsTrue(dst == NULL, "strdup did not return NULL");
+    free(src);
+
+    for (i = 254; i < 258; i++) {
+      src = malloc(i+1);
+      memset(src, 'a', i-1);
+      src[i] = '\0';
+
+      dst = strdup(src);
+      ASSERT_IsTrue(dst != NULL, "strdup returned NULL");
+      ASSERT_IsTrue(strlen(dst) == strlen(src), "string lengths differ");
+      ASSERT_IsTrue(!strcmp(dst, src), "strings differ");
+      free (dst);
+      free(src);
+    }
+}
+ENDTEST