1 files changed, 69 insertions, 0 deletions
diff --git a/src/test/mock_queue.c b/src/test/mock_queue.c
new file mode 100644
index 0000000..10ce834
--- /dev/null
+++ b/src/test/mock_queue.c
@@ -0,0 +1,69 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "mock_queue.h"
+
+struct mock_queue_node_t;
+
+struct mock_queue_node_t {
+   struct mock_queue_node_t *next;
+   void *data;
+};
+
+static struct mock_queue_node_t mock_queue_head;
+static struct mock_queue_node_t *mock_queue_tail;
+size_t mock_queue_length;
+
+void mock_queue_init()
+{
+   mock_queue_length = 0;
+   mock_queue_head.next = NULL;
+   mock_queue_tail = &mock_queue_head;
+}
+
+
+size_t mock_queue_len() {
+   return mock_queue_length;
+}
+
+
+void mock_queue_data(size_t size, void *data)
+{
+      struct mock_queue_node_t *node = malloc(sizeof(struct mock_queue_node_t));
+   if (node == NULL) {
+      fprintf(stderr, "WARNING: memory allocation for mock queue node failed!\n");
+      return;
+   }
+
+   node->data = data;
+   node->next = NULL;
+   mock_queue_tail->next = node;
+   mock_queue_tail = node;
+
+   mock_queue_length += 1;
+}
+
+
+void * mock_front_data()
+{
+   if (mock_queue_head.next == NULL)
+      return NULL;
+   return mock_queue_head.next->data;
+}
+
+
+void mock_pop()
+{
+   if (mock_queue_head.next == NULL)
+      return;
+
+   if (mock_queue_head.next->data != NULL)
+      free(mock_queue_head.next->data);
+   struct mock_queue_node_t *headnext = mock_queue_head.next->next;
+   free(mock_queue_head.next);
+   mock_queue_head.next = headnext;
+   if (headnext == NULL)
+      // no more nodes, bring tail back to head
+      mock_queue_tail = &mock_queue_head;
+   mock_queue_length -= 1;
+}