MFC r316557:

sbuf(3): add some basic functional tests for the library

Areas not covered still [positive functionality wise] are:
- sbuf_{clear,get,set}_flags
- sbuf_new (in particular, with fixed buffers, etc).

Some basic negative testing has been added, but more will be added in the
future.

This work was in part to validate work done by cem in r288223, and ian
before that.

1 files changed, 160 insertions, 0 deletions

diff --git a/lib/libsbuf/tests/sbuf_stdio_test.c b/lib/libsbuf/tests/sbuf_stdio_test.c
new file mode 100644
index 0000000..b2165fb
--- /dev/null
+++ b/lib/libsbuf/tests/sbuf_stdio_test.c
@@ -0,0 +1,160 @@
+/*-
+ * Copyright (c) 2017 Ngie Cooper <ngie@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/sbuf.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <atf-c.h>
+
+#include "sbuf_test_common.h"
+
+static char	test_string[] = "this is a test string";
+
+#define	MESSAGE_FORMAT	"message: %s\n"
+#define	MESSAGE_SEPARATOR	';'
+
+static int
+sbuf_vprintf_helper(struct sbuf *sb, const char * restrict format, ...)
+{
+	va_list ap;
+	int rc;
+
+	va_start(ap, format);
+
+	rc = sbuf_vprintf(sb, format, ap);
+
+	va_end(ap);
+
+	return (rc);
+}
+
+ATF_TC_WITHOUT_HEAD(sbuf_printf_test);
+ATF_TC_BODY(sbuf_printf_test, tc)
+{
+	struct sbuf *sb;
+	char *test_string_tmp;
+
+	asprintf(&test_string_tmp, "%s%c" MESSAGE_FORMAT,
+	    test_string, MESSAGE_SEPARATOR, test_string);
+	ATF_REQUIRE_MSG(test_string_tmp != NULL, "asprintf failed");
+
+	sb = sbuf_new_auto();
+	ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
+	    strerror(errno));
+
+	ATF_REQUIRE_MSG(sbuf_cat(sb, test_string) == 0, "sbuf_cat failed");
+	ATF_REQUIRE_MSG(sbuf_putc(sb, MESSAGE_SEPARATOR) == 0,
+	    "sbuf_putc failed");
+
+	ATF_REQUIRE_MSG(sbuf_printf(sb, MESSAGE_FORMAT, test_string) == 0,
+	    "sbuf_printf failed");
+
+	ATF_REQUIRE_MSG(sbuf_finish(sb) == 0, "sbuf_finish failed: %s",
+	    strerror(errno));
+
+	ATF_REQUIRE_STREQ_MSG(sbuf_data(sb), test_string_tmp,
+	    "sbuf (\"%s\") != test string (\"%s\")", sbuf_data(sb),
+	    test_string_tmp);
+
+	sbuf_delete(sb);
+
+	free(test_string_tmp);
+}
+
+ATF_TC_WITHOUT_HEAD(sbuf_putbuf_test);
+ATF_TC_BODY(sbuf_putbuf_test, tc)
+{
+	struct sbuf *sb;
+	pid_t child_proc;
+
+	sb = sbuf_new_auto();
+	ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
+	    strerror(errno));
+
+	ATF_REQUIRE_MSG(sbuf_cat(sb, test_string) == 0, "sbuf_cat failed");
+
+	child_proc = atf_utils_fork();
+	if (child_proc == 0) {
+		sbuf_putbuf(sb);
+		exit(0);
+	}
+	atf_utils_wait(child_proc, 0, test_string, "");
+
+	ATF_REQUIRE_MSG(sbuf_finish(sb) == 0, "sbuf_finish failed: %s",
+	    strerror(errno));
+
+	sbuf_delete(sb);
+}
+
+ATF_TC_WITHOUT_HEAD(sbuf_vprintf_test);
+ATF_TC_BODY(sbuf_vprintf_test, tc)
+{
+	struct sbuf *sb;
+	char *test_string_tmp;
+	int rc;
+
+	asprintf(&test_string_tmp, "%s%c" MESSAGE_FORMAT,
+	    test_string, MESSAGE_SEPARATOR, test_string);
+	ATF_REQUIRE_MSG(test_string_tmp != NULL, "asprintf failed");
+
+	sb = sbuf_new_auto();
+	ATF_REQUIRE_MSG(sb != NULL, "sbuf_new_auto failed: %s",
+	    strerror(errno));
+
+	ATF_REQUIRE_MSG(sbuf_cat(sb, test_string) == 0, "sbuf_cat failed");
+	ATF_REQUIRE_MSG(sbuf_putc(sb, MESSAGE_SEPARATOR) == 0,
+	    "sbuf_putc failed");
+
+	rc = sbuf_vprintf_helper(sb, MESSAGE_FORMAT, test_string);
+	ATF_REQUIRE_MSG(rc == 0, "sbuf_vprintf failed");
+
+	ATF_REQUIRE_MSG(sbuf_finish(sb) == 0, "sbuf_finish failed: %s",
+	    strerror(errno));
+
+	ATF_REQUIRE_STREQ_MSG(sbuf_data(sb), test_string_tmp,
+	    "sbuf (\"%s\") != test string (\"%s\")", sbuf_data(sb),
+	    test_string_tmp);
+
+	sbuf_delete(sb);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, sbuf_printf_test);
+	ATF_TP_ADD_TC(tp, sbuf_putbuf_test);
+	ATF_TP_ADD_TC(tp, sbuf_vprintf_test);
+
+	return (atf_no_error());
+}