1 files changed, 63 insertions, 0 deletions
diff --git a/gnulib-tests/test-i-ring.c b/gnulib-tests/test-i-ring.c
new file mode 100644
index 0000000..fff3328
--- /dev/null
+++ b/gnulib-tests/test-i-ring.c
@@ -0,0 +1,63 @@
+/* Test the simple ring buffer.
+   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+#include "i-ring.h"
+
+#include "macros.h"
+
+int
+main (void)
+{
+  int o;
+  I_ring ir;
+  i_ring_init (&ir, -1);
+  o = i_ring_push (&ir, 1);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 2);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 3);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 4);
+  ASSERT (o == -1);
+  o = i_ring_push (&ir, 5);
+  ASSERT (o == 1);
+  o = i_ring_push (&ir, 6);
+  ASSERT (o == 2);
+  o = i_ring_push (&ir, 7);
+  ASSERT (o == 3);
+
+  o = i_ring_pop (&ir);
+  ASSERT (o == 7);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 6);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 5);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 4);
+  ASSERT (i_ring_empty (&ir));
+
+  o = i_ring_push (&ir, 8);
+  ASSERT (o == -1);
+  o = i_ring_pop (&ir);
+  ASSERT (o == 8);
+  ASSERT (i_ring_empty (&ir));
+
+  return 0;
+}