From adb6da8b949b934b2a91406a7fb470e91d8dcefc Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Wed, 29 Aug 2018 14:34:31 +0200
Subject: Add tests for [v]{we,e,en}printf
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 vweprintf.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 82 insertions(+), 1 deletion(-)

diff --git a/vweprintf.c b/vweprintf.c
index a46363d..491763b 100644
--- a/vweprintf.c
+++ b/vweprintf.c
@@ -7,7 +7,7 @@ extern char *argv0;
 
 
 void
-libsimple_vweprintf(const char *fmt, va_list ap) /* TODO test (weprintf, enprintf, eprintf) */
+libsimple_vweprintf(const char *fmt, va_list ap)
 {
 	int saved_errno = errno, r;
 	const char *end = strchr(fmt, '\0');
@@ -60,9 +60,90 @@ libsimple_vweprintf(const char *fmt, va_list ap) /* TODO test (weprintf, enprint
 #else
 #include "test.h"
 
+#if defined(__GNUC__) && !defined(__clang__)
+# pragma GCC diagnostic ignored "-Wformat-zero-length"
+#endif
+
 int
 main(void)
 {
+	char prefix[100];
+	int i, j;
+
+#define T(...)\
+	do {\
+		stderr_n = 0;\
+		if (j == 0) {\
+			libsimple_weprintf(__VA_ARGS__);\
+		} else if (j == 1) {\
+			assert_exit(libsimple_enprintf(107, __VA_ARGS__));\
+			assert(exit_status == 107);\
+		} else {\
+			libsimple_default_failure_exit = 108;\
+			assert_exit(libsimple_eprintf(__VA_ARGS__));\
+			assert(exit_status == 108);\
+		}\
+	} while (0)
+
+	sprintf(prefix, "%s: ", argv0);
+	stderr_ok = 1;
+
+	for (i = 0; i < 2; i++, argv0 = NULL, *prefix = '\0') {
+		for (j = 0; j < 3; j++) {
+			T("%s%s%s\n", "abc", "123", "xyz");
+			assert_stderr("%s%s\n", prefix, "abc123xyz");
+			T("%s%s%s\n", "abc", "123", "\n");
+			assert_stderr("%s%s\n", prefix, "abc123\n");
+			T("%s%s%s", "abc", "123", "xyz");
+			assert_stderr("%s%s\n", prefix, "abc123xyz");
+			T("%s%s%s", "abc", "123", "\n");
+			assert_stderr("%s%s\n", prefix, "abc123\n");
+			errno = EDOM;
+			T("%s%s%s:", "abc", "123", "\n");
+			assert_stderr("%s%s: %s\n", prefix, "abc123\n", strerror(EDOM));
+			errno = ERANGE;
+			T("%s%s%s:", "abc", "123", "\n");
+			assert_stderr("%s%s: %s\n", prefix, "abc123\n", strerror(ERANGE));
+			errno = EOVERFLOW;
+			T("");
+			assert_stderr("%s%s\n", prefix, strerror(EOVERFLOW));
+
+			T("%s%s%s\n", "usage: ", "123", "xyz");
+			assert_stderr("%s%s\n", prefix, "usage: 123xyz");
+			T("%s%s%s\n", "usage: ", "123", "\n");
+			assert_stderr("%s%s\n", prefix, "usage: 123\n");
+			T("%s%s%s", "usage: ", "123", "xyz");
+			assert_stderr("%s%s\n", prefix, "usage: 123xyz");
+			T("%s%s%s", "usage: ", "123", "\n");
+			assert_stderr("%s%s\n", prefix, "usage: 123\n");
+			errno = EDOM;
+			T("%s%s%s:", "usage: ", "123", "\n");
+			assert_stderr("%s%s: %s\n", prefix, "usage: 123\n", strerror(EDOM));
+			errno = ERANGE;
+			T("%s%s%s:", "usage: ", "123", "\n");
+			assert_stderr("%s%s: %s\n", prefix, "usage: 123\n", strerror(ERANGE));
+
+			T("usage: %s%s%s\n", "abc", "123", "xyz");
+			assert_stderr("%s: %s\n", "usage", "abc123xyz");
+			T("usage: %s%s%s\n", "abc", "123", "\n");
+			assert_stderr("%s: %s\n", "usage", "abc123\n");
+			T("usage: %s%s%s", "abc", "123", "xyz");
+			assert_stderr("%s: %s\n", "usage", "abc123xyz");
+			T("usage: %s%s%s", "abc", "123", "\n");
+			assert_stderr("%s: %s\n", "usage", "abc123\n");
+			errno = EDOM;
+			T("usage: %s%s%s:", "abc", "123", "\n");
+			assert_stderr("%s: %s: %s\n", "usage", "abc123\n", strerror(EDOM));
+			errno = ERANGE;
+			T("usage: %s%s%s:", "abc", "123", "\n");
+			assert_stderr("%s: %s: %s\n", "usage", "abc123\n", strerror(ERANGE));
+			T("usage: ");
+			assert_stderr("%s", "usage: \n");
+		}
+	}
+
+#undef T
+
 	return 0;
 }
 
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