Update to rra-c-util 4.12 and C TAP Harness 2.3

[kerberos/krb5-strength.git] / tests / portable / strndup-t.c

diff --git a/tests/portable/strndup-t.c b/tests/portable/strndup-t.c
new file mode 100644 (file)
index 0000000..0f923b7
--- /dev/null
+++ b/tests/portable/strndup-t.c
@@ -0,0 +1,58 @@
+/*
+ * strndup test suite.
+ *
+ * The canonical version of this file is maintained in the rra-c-util package,
+ * which can be found at <http://www.eyrie.org/~eagle/software/rra-c-util/>.
+ *
+ * Written by Russ Allbery <eagle@eyrie.org>
+ *
+ * The authors hereby relinquish any claim to any copyright that they may have
+ * in this work, whether granted under contract or by operation of law or
+ * international treaty, and hereby commit to the public, at large, that they
+ * shall not, at any time in the future, seek to enforce any copyright in this
+ * work against any person or entity, or prevent any person or entity from
+ * copying, publishing, distributing or creating derivative works of this
+ * work.
+ */
+
+#include <config.h>
+#include <portable/system.h>
+
+#include <errno.h>
+
+#include <tests/tap/basic.h>
+
+char *test_strndup(const char *, size_t);
+
+
+int
+main(void)
+{
+    char buffer[3];
+    char *result = NULL;
+
+    plan(7);
+
+    result = test_strndup("foo", 8);
+    is_string("foo", result, "strndup longer than string");
+    free(result);
+    result = test_strndup("foo", 2);
+    is_string("fo", result, "strndup shorter than string");
+    free(result);
+    result = test_strndup("foo", 3);
+    is_string("foo", result, "strndup same size as string");
+    free(result);
+    result = test_strndup("foo", 0);
+    is_string("", result, "strndup of size 0");
+    free(result);
+    memcpy(buffer, "foo", 3);
+    result = test_strndup(buffer, 3);
+    is_string("foo", result, "strndup of non-nul-terminated string");
+    free(result);
+    errno = 0;
+    result = test_strndup(NULL, 0);
+    is_string(NULL, result, "strndup of NULL");
+    is_int(errno, EINVAL, "...and returns EINVAL");
+
+    return 0;
+}