list: add length and tests

3 files changed, 17 insertions, 6 deletions

diff --git a/src/list.c b/src/list.c
index 133637b..226985e 100644
--- a/src/list.c
+++ b/src/list.c
@@ -28,8 +28,19 @@ int list_sort ( list_element_t** _root ) {
 	return -1;
 }
 
-int list_length ( list_element_t* _root ) {
-	return -1;
+int list_length ( list_element_t** _root ) {
+	list_element_t** iter = _root;
+	int ret = 0;
+
+	if( !_root )
+		return -1;
+
+	while(*iter) {
+		ret ++;
+		iter = & (*iter)->next;
+	}
+
+	return ret;
 }
 
 void* list_pop_front ( list_element_t** _root ) {
diff --git a/src/list.h b/src/list.h
index 71594ad..1359955 100644
--- a/src/list.h
+++ b/src/list.h
@@ -20,6 +20,6 @@ int list_add( list_element_t** _root, void* _data );
 
 int list_sort ( list_element_t** _root );
 
-int list_length ( list_element_t* _root );
+int list_length ( list_element_t** _root );
 
 void* list_pop_front ( list_element_t** _root );
diff --git a/tests/list.c b/tests/list.c
index 25fa323..722568b 100644
--- a/tests/list.c
+++ b/tests/list.c
@@ -20,14 +20,14 @@ START_TEST ( test_list_all ) {
 
 	/* Not implemented
 	list_sort(&root);
-
-	ck_assert_int_eq( list_length(root), 9 );
 	*/
+	ck_assert_int_ne( list_sort(&root), 0 );
+	ck_assert_int_eq( list_length(&root), 9 );
 
 	for ( i=0; i<=8; i++ )
 		ck_assert_int_eq(*(int*)list_pop_front(&root), i);
 
-	/*ck_assert_int_eq( list_length(root), 0 );*/
+	ck_assert_int_eq( list_length(&root), 0 );
 
 } END_TEST