list: test CCAN_LIST_DEBUG=1 case

ccan/list/test/run-with-debug.c

+#define CCAN_LIST_DEBUG 1
+#include <ccan/list/list.h>
+#include <ccan/tap/tap.h>
+#include <ccan/list/list.c>
+
+struct parent {
+	const char *name;
+	struct list_head children;
+	unsigned int num_children;
+};
+
+struct child {
+	const char *name;
+	struct list_node list;
+};
+
+static LIST_HEAD(static_list);
+
+int main(int argc, char *argv[])
+{
+	struct parent parent;
+	struct child c1, c2, c3, *c, *n;
+	unsigned int i;
+
+	plan_tests(47);
+	/* Test LIST_HEAD, list_empty and check_list */
+	ok1(list_empty(&static_list));
+	ok1(list_check(&static_list, NULL));
+
+	parent.num_children = 0;
+	list_head_init(&parent.children);
+	/* Test list_head_init */
+	ok1(list_empty(&parent.children));
+	ok1(list_check(&parent.children, NULL));
+
+	c2.name = "c2";
+	list_add(&parent.children, &c2.list);
+	/* Test list_add and !list_empty. */
+	ok1(!list_empty(&parent.children));
+	ok1(c2.list.next == &parent.children.n);
+	ok1(c2.list.prev == &parent.children.n);
+	ok1(parent.children.n.next == &c2.list);
+	ok1(parent.children.n.prev == &c2.list);
+	/* Test list_check */
+	ok1(list_check(&parent.children, NULL));
+
+	c1.name = "c1";
+	list_add(&parent.children, &c1.list);
+	/* Test list_add and !list_empty. */
+	ok1(!list_empty(&parent.children));
+	ok1(c2.list.next == &parent.children.n);
+	ok1(c2.list.prev == &c1.list);
+	ok1(parent.children.n.next == &c1.list);
+	ok1(parent.children.n.prev == &c2.list);
+	ok1(c1.list.next == &c2.list);
+	ok1(c1.list.prev == &parent.children.n);
+	/* Test list_check */
+	ok1(list_check(&parent.children, NULL));
+
+	c3.name = "c3";
+	list_add_tail(&parent.children, &c3.list);
+	/* Test list_add_tail and !list_empty. */
+	ok1(!list_empty(&parent.children));
+	ok1(parent.children.n.next == &c1.list);
+	ok1(parent.children.n.prev == &c3.list);
+	ok1(c1.list.next == &c2.list);
+	ok1(c1.list.prev == &parent.children.n);
+	ok1(c2.list.next == &c3.list);
+	ok1(c2.list.prev == &c1.list);
+	ok1(c3.list.next == &parent.children.n);
+	ok1(c3.list.prev == &c2.list);
+	/* Test list_check */
+	ok1(list_check(&parent.children, NULL));
+
+	/* Test list_check_node */
+	ok1(list_check_node(&c1.list, NULL));
+	ok1(list_check_node(&c2.list, NULL));
+	ok1(list_check_node(&c3.list, NULL));
+
+	/* Test list_top */
+	ok1(list_top(&parent.children, struct child, list) == &c1);
+
+	/* Test list_tail */
+	ok1(list_tail(&parent.children, struct child, list) == &c3);
+
+	/* Test list_for_each. */
+	i = 0;
+	list_for_each(&parent.children, c, list) {
+		switch (i++) {
+		case 0:
+			ok1(c == &c1);
+			break;
+		case 1:
+			ok1(c == &c2);
+			break;
+		case 2:
+			ok1(c == &c3);
+			break;
+		}
+		if (i > 2)
+			break;
+	}
+	ok1(i == 3);
+
+	/* Test list_for_each_safe and list_del. */
+	i = 0;
+	list_for_each_safe(&parent.children, c, n, list) {
+		switch (i++) {
+		case 0:
+			ok1(c == &c1);
+			break;
+		case 1:
+			ok1(c == &c2);
+			break;
+		case 2:
+			ok1(c == &c3);
+			break;
+		}
+		list_del(&c->list);
+		ok1(list_check(&parent.children, NULL));
+		if (i > 2)
+			break;
+	}
+	ok1(i == 3);
+	ok1(list_empty(&parent.children));
+
+	/* Test list_top/list_tail on empty list. */
+	ok1(list_top(&parent.children, struct child, list) == NULL);
+	ok1(list_tail(&parent.children, struct child, list) == NULL);
+	return exit_status();
+}