diff --git a/t/t_ipaddr.c b/t/t_ipaddr.c
index ea6bcf1..2ff7114 100644
--- a/t/t_ipaddr.c
+++ b/t/t_ipaddr.c
@@ -17,14 +17,30 @@ int main() {
   assert(addr->matches.max == 15);
   assert(addr->matches.used == 0);
 
-  assert(0); /* TODO: add more ips to list & test this cases */
-
   assert((list = f2b_addrlist_append(list, addr)) != NULL);
   assert(f2b_addrlist_lookup(list, "127.0.0.1") != NULL);
   assert(list == addr);
 
   assert((list = f2b_addrlist_remove(list, "127.4.4.4")) != NULL);
   assert((list = f2b_addrlist_remove(list, "127.0.0.1")) == NULL);
+  assert(list == NULL);
+
+  assert((addr = f2b_ipaddr_create("127.0.0.1", 15)) != NULL);
+  assert((list = f2b_addrlist_append(list, addr)) != NULL);
+  assert((addr = f2b_ipaddr_create("127.0.0.2", 15)) != NULL);
+  assert((list = f2b_addrlist_append(list, addr)) != NULL);
+  assert((addr = f2b_ipaddr_create("127.0.0.3", 15)) != NULL);
+  assert((list = f2b_addrlist_append(list, addr)) != NULL);
+  assert((addr = f2b_ipaddr_create("127.0.0.4", 15)) != NULL);
+  assert((list = f2b_addrlist_append(list, addr)) != NULL);
+  assert((addr = f2b_ipaddr_create("127.0.0.5", 15)) != NULL);
+  assert((list = f2b_addrlist_append(list, addr)) != NULL);
+
+  assert((list = f2b_addrlist_remove(list, "127.0.0.2")) != NULL);
+  assert((list = f2b_addrlist_remove(list, "127.0.0.4")) != NULL);
+  assert((list = f2b_addrlist_remove(list, "127.0.0.3")) != NULL);
+  assert((list = f2b_addrlist_remove(list, "127.0.0.5")) != NULL);
+  assert((list = f2b_addrlist_remove(list, "127.0.0.1")) == NULL);
 
   return 0;
 }