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-rw-r--r--contrib/netbsd-tests/lib/libc/stdio/t_open_memstream.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libc/stdio/t_open_memstream.c b/contrib/netbsd-tests/lib/libc/stdio/t_open_memstream.c
new file mode 100644
index 0000000..950a258
--- /dev/null
+++ b/contrib/netbsd-tests/lib/libc/stdio/t_open_memstream.c
@@ -0,0 +1,96 @@
+/*
+ * Based on the OpenBSD test
+ * Copyright (c) 2011 Martin Pieuchot <mpi@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_open_memstream.c,v 1.2 2014/10/19 11:17:43 justin Exp $");
+
+#include <atf-c.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+ATF_TC(test_open_memstream);
+ATF_TC_HEAD(test_open_memstream, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "Test open_memstream functionality");
+}
+
+#define OFFSET 16384
+
+const char start[] = "start";
+const char hello[] = "hello";
+
+ATF_TC_BODY(test_open_memstream, tc)
+{
+ FILE *fp;
+ char *buf = (char *)0xff;
+ size_t size = 0;
+ off_t off;
+ int i;
+
+ fp = open_memstream(&buf, &size);
+ ATF_REQUIRE(fp != NULL);
+
+ off = ftello(fp);
+ ATF_CHECK(off == 0);
+
+ ATF_CHECK(fflush(fp) == 0);
+ ATF_CHECK(size == 0);
+ ATF_CHECK(buf != (char *)0xff);
+ ATF_CHECK(fseek(fp, -6, SEEK_SET) == -1);
+ ATF_CHECK(fseek(fp, OFFSET, SEEK_SET) == 0);
+ ATF_CHECK(fprintf(fp, hello) != EOF);
+ ATF_CHECK(fflush(fp) != EOF);
+ ATF_CHECK(size == OFFSET + sizeof(hello)-1);
+ ATF_CHECK(fseek(fp, 0, SEEK_SET) == 0);
+ ATF_CHECK(fprintf(fp, start) != EOF);
+ ATF_CHECK(fflush(fp) != EOF);
+ ATF_CHECK(size == sizeof(start)-1);
+
+ /* Needed for sparse files */
+ ATF_CHECK(strncmp(buf, start, sizeof(start)-1) == 0);
+ for (i = sizeof(start)-1; i < OFFSET; i++)
+ ATF_CHECK(buf[i] == '\0');
+
+ ATF_CHECK(memcmp(buf + OFFSET, hello, sizeof(hello)-1) == 0);
+
+ /* verify that simply seeking past the end doesn't increase the size */
+ ATF_CHECK(fseek(fp, 100, SEEK_END) == 0);
+ ATF_CHECK(fflush(fp) != EOF);
+ ATF_CHECK(size == OFFSET + sizeof(hello)-1);
+ ATF_CHECK(fseek(fp, 8, SEEK_SET) == 0);
+ ATF_CHECK(ftell(fp) == 8);
+
+ /* Try to seek backward */
+ ATF_CHECK(fseek(fp, -1, SEEK_CUR) == 0);
+ ATF_CHECK(ftell(fp) == 7);
+ ATF_CHECK(fseek(fp, 5, SEEK_CUR) == 0);
+ ATF_CHECK(fclose(fp) != EOF);
+ ATF_CHECK(size == 12);
+
+ free(buf);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+ ATF_TP_ADD_TC(tp, test_open_memstream);
+
+ return atf_no_error();
+}
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