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[tests][printf] add a simple test to make sure snprintf colors within the lines

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Travis Geiselbrecht
2012-06-16 16:39:43 -07:00
parent 836375f779
commit 96b1f27f4a
1 changed files with 15 additions and 0 deletions
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15
app/tests/printf_tests.c
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@@ -22,6 +22,7 @@
*/
#include <app/tests.h>
#include <debug.h>
#include <string.h>
void printf_tests(void)
{
@@ -85,6 +86,20 @@ void printf_tests(void)
printf(" returned %d\n", err);
err = printf("abcdef");
printf(" returned %d\n", err);
/* make sure snprintf terminates at the right spot */
char buf[32];
memset(buf, 0, sizeof(buf));
err = sprintf(buf, "0123456789abcdef012345678");
printf("sprintf returns %d\n", err);
hexdump8(buf, sizeof(buf));
memset(buf, 0, sizeof(buf));
err = snprintf(buf, 15, "0123456789abcdef012345678");
printf("snprintf returns %d\n", err);
hexdump8(buf, sizeof(buf));
}