1 files changed, 32 insertions, 0 deletions

diff --git a/deque.c b/deque.c
index 0e0bbf0..168669e 100644
--- a/deque.c
+++ b/deque.c
@@ -295,6 +295,7 @@ test_deque(void)
                 assert(deque_pop_back(d, &data) == true);
                 assert(data == i);
         }
+        assert(deque_is_empty(d) == true);
 
         deque_free(d);
 
@@ -309,6 +310,7 @@ test_deque(void)
                 assert(deque_pop_front(d, &data) == true);
                 assert(data == i);
         }
+        assert(deque_is_empty(d) == true);
 
         deque_free(d);
 
@@ -323,6 +325,35 @@ test_deque(void)
                 assert(deque_pop_back(d, &data) == true);
                 assert(data == i);
         }
+        assert(deque_is_empty(d) == true);
+
+        deque_free(d);
+
+        deque_init(d);
+
+        for ( int i = 0; i != N; ++i ) {
+                if ( i & 1 ) {
+                        deque_push_front(d, i);
+                }
+                else {
+                        deque_push_back(d, i);
+                }
+        }
+
+        for ( int i = N - 1; i >= 0; --i ) {
+                int data;
+                if ( i & 1 ) {
+                        assert(deque_pop_front(d, &data) == true);
+                }
+                else {
+                        assert(deque_pop_back(d, &data) == true);
+                }
+                if ( data != i ) {
+                        printf("i: %d - data: %d\n", i, data);
+                }
+                assert(data == i);
+        }
+        assert(deque_is_empty(d) == true);
 
         deque_free(d);
 
@@ -337,6 +368,7 @@ test_deque(void)
                 assert(deque_pop_front(d, &data) == true);
                 assert(data == i);
         }
+        assert(deque_is_empty(d) == true);
 
         deque_free(d);
 }