From 87b13070409f54360a7e658a425770265075f25e Mon Sep 17 00:00:00 2001
From: Duncan Overbruck <mail@duncano.de>
Date: Tue, 25 Jan 2022 20:34:39 +0100
Subject: [PATCH] test: Add fpurge() test case using open_memstream(3) FILE

Signed-off-by: Guillem Jover <guillem@hadrons.org>
---
 test/fpurge.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/fpurge.c b/test/fpurge.c
index 1118f23..be6a593 100644
--- a/test/fpurge.c
+++ b/test/fpurge.c
@@ -25,11 +25,15 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 int
 main(int argc, char *argv[])
 {
 	FILE *fp;
+	char *buf = NULL;
+	size_t bufsz = 0;
 
 	if (fpurge(NULL) == 0)
 		return 1;
@@ -40,5 +44,14 @@ main(int argc, char *argv[])
 
 	fclose(fp);
 
+	fp = open_memstream(&buf, &bufsz);
+	fputs("World", fp);
+	if (fpurge(fp) < 0)
+		return 1;
+	fflush(fp);
+	if (bufsz != 0)
+		return 1;
+	free(buf);
+
 	return 0;
 }
-- 
2.47.3