diff -r a2a757d225b4 -r 1274e46b3013 tests/test_list.c
--- a/tests/test_list.c	Tue Jan 09 00:09:11 2024 +0100
+++ b/tests/test_list.c	Tue Jan 09 21:25:08 2024 +0100
@@ -555,6 +555,86 @@
     destroy_nodes_test_data(expected);
 }
 
+
+CX_TEST(test_empty_list_size) {
+    CX_TEST_DO {
+        CX_TEST_ASSERT(cxEmptyList->size == 0);
+        CX_TEST_ASSERT(cxListSize(cxEmptyList) == 0);
+    }
+}
+
+CX_TEST(test_empty_list_iterator) {
+    CxList *list = cxEmptyList;
+
+    CxIterator it1 = cxListIterator(list);
+    CxIterator it2 = cxListBackwardsIterator(list);
+    CxMutIterator it3 = cxListMutIterator(list);
+    CxMutIterator it4 = cxListMutBackwardsIterator(list);
+
+    CX_TEST_DO {
+        CX_TEST_ASSERT(!cxIteratorValid(it1));
+        CX_TEST_ASSERT(!cxIteratorValid(it2));
+        CX_TEST_ASSERT(!cxIteratorValid(it3));
+        CX_TEST_ASSERT(!cxIteratorValid(it4));
+
+        int c = 0;
+        cx_foreach(void*, data, it1) c++;
+        cx_foreach(void*, data, it2) c++;
+        cx_foreach(void*, data, it3) c++;
+        cx_foreach(void*, data, it4) c++;
+        CX_TEST_ASSERT(c == 0);
+    }
+}
+
+CX_TEST(test_empty_list_noops) {
+    CX_TEST_DO {
+        CxList copy = *cxEmptyList;
+        cxListSort(cxEmptyList);
+        cxListClear(cxEmptyList);
+        cxListDestroy(cxEmptyList);
+        CX_TEST_ASSERT(0 == memcmp(&copy, cxEmptyList, sizeof(CxList))); // NOLINT(*-suspicious-memory-comparison)
+    }
+}
+
+CX_TEST(test_empty_list_at) {
+    CX_TEST_DO {
+        CX_TEST_ASSERT(cxListAt(cxEmptyList, 0) == NULL);
+        CX_TEST_ASSERT(cxListAt(cxEmptyList, 1) == NULL);
+    }
+}
+
+CX_TEST(test_empty_list_find) {
+    int x = 42, y = 1337;
+    CX_TEST_DO {
+        CX_TEST_ASSERT(cxListFind(cxEmptyList, &x) < 0);
+        CX_TEST_ASSERT(cxListFind(cxEmptyList, &y) < 0);
+    }
+}
+
+CX_TEST(test_empty_list_compare) {
+    CxList *empty = cxEmptyList;
+    CxList *ll = cxLinkedListCreateSimple(sizeof(int));
+    CxList *al = cxArrayListCreateSimple(sizeof(int), 8);
+    int x = 5;
+    CX_TEST_DO {
+        CX_TEST_ASSERT(0 == cxListCompare(empty, cxEmptyList));
+        CX_TEST_ASSERT(0 == cxListCompare(ll, cxEmptyList));
+        CX_TEST_ASSERT(0 == cxListCompare(al, cxEmptyList));
+        CX_TEST_ASSERT(0 == cxListCompare(cxEmptyList, ll));
+        CX_TEST_ASSERT(0 == cxListCompare(cxEmptyList, al));
+
+        cxListAdd(ll, &x);
+        cxListAdd(al, &x);
+
+        CX_TEST_ASSERT(0 < cxListCompare(ll, cxEmptyList));
+        CX_TEST_ASSERT(0 < cxListCompare(al, cxEmptyList));
+        CX_TEST_ASSERT(0 > cxListCompare(cxEmptyList, ll));
+        CX_TEST_ASSERT(0 > cxListCompare(cxEmptyList, al));
+    }
+    cxListDestroy(ll);
+    cxListDestroy(al);
+}
+
 CxTestSuite *cx_test_suite_array_list(void) {
     CxTestSuite *suite = cx_test_suite_new("array_list");
 
@@ -584,3 +664,15 @@
     return suite;
 }
 
+CxTestSuite *cx_test_suite_empty_list(void) {
+    CxTestSuite *suite = cx_test_suite_new("empty list dummy");
+
+    cx_test_register(suite, test_empty_list_size);
+    cx_test_register(suite, test_empty_list_iterator);
+    cx_test_register(suite, test_empty_list_noops);
+    cx_test_register(suite, test_empty_list_at);
+    cx_test_register(suite, test_empty_list_find);
+    cx_test_register(suite, test_empty_list_compare);
+
+    return suite;
+}