From e52f3b8b300d42f5a2b0c11387cb55cf2903e2de Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <patrick.pelissier@gmail.com>
Date: Thu, 7 Oct 2021 21:47:49 +0200
Subject: [PATCH] Add more test cases for deque _next / _previous

---
 tests/test-mdeque.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tests/test-mdeque.c b/tests/test-mdeque.c
index 6814ea69..d177bf8b 100644
--- a/tests/test-mdeque.c
+++ b/tests/test-mdeque.c
@@ -190,6 +190,30 @@ static void test_it(void)
       assert (deque_last_p(it));
       assert (deque_end_p(it) || *deque_cref (it) == (int)(1996+i));
     }
+    deque_clean(d);
+    for(int i = 0; i < 4000; i++) {
+      deque_push_back(d, i);
+      deque_it(it, d);
+      int z = 0;
+      while (!deque_end_p(it)) {
+        assert ( *deque_cref(it) == z);
+        z ++;
+        deque_next(it);
+      }
+      assert(z == i+1);
+    }
+    deque_clean(d);
+    for(int i = 0; i < 4000; i++) {
+      deque_push_front(d, i);
+      deque_it_last(it, d);
+      int z = 0;
+      while (!deque_end_p(it)) {
+        assert ( *deque_cref(it) == z);
+        z ++;
+        deque_previous(it);
+      }
+      assert(z == i+1);
+    }
   }
   M_LET(d, OPL) {
     deque_it_t it;