1 files changed, 114 insertions, 0 deletions

diff --git a/src/lib/util/test_container_dll.c b/src/lib/util/test_container_dll.c
new file mode 100644
index 000000000..fcbef4e8b
--- /dev/null
+++ b/src/lib/util/test_container_dll.c
@@ -0,0 +1,114 @@
+/*
+   This file is part of GNUnet.
+   Copyright (C) 2017 GNUnet e.V.
+
+   GNUnet is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Affero General Public License as published
+   by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   GNUnet 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
+   Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @author Christian Grothoff
+ * @file util/test_container_dll.c
+ * @brief Test of DLL operations
+ */
+
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+
+/**
+ * Element in the DLL.
+ */
+struct Element
+{
+  /**
+   * Required pointer to previous element.
+   */
+  struct Element *prev;
+
+  /**
+   * Required pointer to next element.
+   */
+  struct Element *next;
+
+  /**
+   * Used to sort.
+   */
+  unsigned int value;
+};
+
+
+/**
+ * Compare two elements.
+ *
+ * @param cls closure, NULL
+ * @param e1 an element of to sort
+ * @param e2 another element to sort
+ * @return #GNUNET_YES if @e1 < @e2, otherwise #GNUNET_NO
+ */
+static int
+cmp_elem (void *cls,
+          struct Element *e1,
+          struct Element *e2)
+{
+  if (e1->value == e2->value)
+    return 0;
+  return (e1->value < e2->value) ? 1 : -1;
+}
+
+
+int
+main (int argc, char **argv)
+{
+  unsigned int values[] = {
+    4, 5, 8, 6, 9, 3, 7, 2, 1, 0
+  };
+  struct Element *head = NULL;
+  struct Element *tail = NULL;
+  struct Element *e;
+  unsigned int want;
+
+  GNUNET_log_setup ("test-container-dll",
+                    "WARNING",
+                    NULL);
+  for (unsigned int off = 0;
+       0 != values[off];
+       off++)
+  {
+    e = GNUNET_new (struct Element);
+    e->value = values[off];
+    GNUNET_CONTAINER_DLL_insert_sorted (struct Element,
+                                        cmp_elem,
+                                        NULL,
+                                        head,
+                                        tail,
+                                        e);
+  }
+
+  want = 1;
+  while (NULL != (e = head))
+  {
+    GNUNET_assert (e->value == want);
+    GNUNET_CONTAINER_DLL_remove (head,
+                                 tail,
+                                 e);
+    GNUNET_free (e);
+    want++;
+  }
+  return 0;
+}
+
+
+/* end of test_container_heap.c */