diff --git a/test/heap/test_heap.c b/test/heap/test_heap.c
index 84f24c1..f77b0dc 100644
--- a/test/heap/test_heap.c
+++ b/test/heap/test_heap.c
@@ -159,6 +159,18 @@ void test_pop_random() {
         TEST_CHECK_(data == (void *)numbers[i], "pop %lx == %lx", (uint64_t)data, numbers[i]);
         TEST_SIZE(heap, n - i - 1);
         TEST_CHECK(count_nodes_heap(heap) == n - i - 1);
+
+        // Assure each size is also a valid heap after inserting
+        vieter_heap_insert(heap, numbers[i], (void *)numbers[i]);
+        TEST_SIZE(heap, n - i);
+        TEST_CHECK(count_nodes_heap(heap) == n - i);
+
+        data = NULL;
+
+        TEST_CHECK(vieter_heap_pop(&data, heap) == vieter_heap_ok);
+        TEST_CHECK_(data == (void *)numbers[i], "pop %lx == %lx", (uint64_t)data, numbers[i]);
+        TEST_SIZE(heap, n - i - 1);
+        TEST_CHECK(count_nodes_heap(heap) == n - i - 1);
     }
 
     vieter_heap_free(heap);