diff -r 07ac32b385e4 -r 365b24f20f98 test/list_tests.c
--- a/test/list_tests.c	Thu Nov 07 10:43:31 2019 +0100
+++ b/test/list_tests.c	Sun Nov 24 17:57:25 2019 +0100
@@ -403,3 +403,94 @@
     ucx_list_free(expected);
     ucx_list_free(list);
 }
+
+UCX_TEST(test_ucx_list_union) {
+    UcxList *left = ucx_list_append(NULL, (void*)"this");
+    left = ucx_list_append(left, (void*)"is");
+    left = ucx_list_append(left, (void*)"a");
+    left = ucx_list_append(left, (void*)"test");
+
+    UcxList *right = ucx_list_append(NULL, (void*)"to");
+    right = ucx_list_append(right, (void*)"test");
+    right = ucx_list_append(right, (void*)"set");
+    right = ucx_list_append(right, (void*)"operations");
+    
+    UcxList *expected = ucx_list_append(NULL, (void*)"this");
+    expected = ucx_list_append(expected, (void*)"is");
+    expected = ucx_list_append(expected, (void*)"a");
+    expected = ucx_list_append(expected, (void*)"test");
+    expected = ucx_list_append(expected, (void*)"to");
+    expected = ucx_list_append(expected, (void*)"set");
+    expected = ucx_list_append(expected, (void*)"operations");
+
+    UcxList* result = ucx_list_union(left, right, ucx_cmp_str,
+            NULL, NULL, NULL);
+
+    UCX_TEST_BEGIN
+    UCX_TEST_ASSERT(ucx_list_equals(result, expected,
+            ucx_cmp_str, NULL), "failed");
+    UCX_TEST_END
+
+    ucx_list_free(result);
+    ucx_list_free(expected);
+    ucx_list_free(right);
+    ucx_list_free(left);
+}
+
+UCX_TEST(test_ucx_list_intersection) {
+    UcxList *left = ucx_list_append(NULL, (void*)"this");
+    left = ucx_list_append(left, (void*)"is");
+    left = ucx_list_append(left, (void*)"a");
+    left = ucx_list_append(left, (void*)"test");
+
+    UcxList *right = ucx_list_append(NULL, (void*)"to");
+    right = ucx_list_append(right, (void*)"test");
+    right = ucx_list_append(right, (void*)"a");
+    right = ucx_list_append(right, (void*)"set");
+    right = ucx_list_append(right, (void*)"operation");
+    
+    UcxList *expected = ucx_list_append(NULL, (void*)"a");
+    expected = ucx_list_append(expected, (void*)"test");
+
+    UcxList* result = ucx_list_intersection(left, right, ucx_cmp_str,
+            NULL, NULL, NULL);
+
+    UCX_TEST_BEGIN
+    UCX_TEST_ASSERT(ucx_list_equals(result, expected,
+            ucx_cmp_str, NULL), "failed");
+    UCX_TEST_END
+
+    ucx_list_free(result);
+    ucx_list_free(expected);
+    ucx_list_free(right);
+    ucx_list_free(left);
+}
+
+UCX_TEST(test_ucx_list_difference) {
+    UcxList *left = ucx_list_append(NULL, (void*)"this");
+    left = ucx_list_append(left, (void*)"is");
+    left = ucx_list_append(left, (void*)"a");
+    left = ucx_list_append(left, (void*)"test");
+
+    UcxList *right = ucx_list_append(NULL, (void*)"to");
+    right = ucx_list_append(right, (void*)"test");
+    right = ucx_list_append(right, (void*)"this");
+    right = ucx_list_append(right, (void*)"set");
+    right = ucx_list_append(right, (void*)"operations");
+    
+    UcxList *expected = ucx_list_append(NULL, (void*)"is");
+    expected = ucx_list_append(expected, (void*)"a");
+    
+    UcxList* result = ucx_list_difference(left, right, ucx_cmp_str,
+            NULL, NULL, NULL);
+
+    UCX_TEST_BEGIN
+    UCX_TEST_ASSERT(ucx_list_equals(result, expected,
+            ucx_cmp_str, NULL), "failed");
+    UCX_TEST_END
+
+    ucx_list_free(result);
+    ucx_list_free(expected);
+    ucx_list_free(right);
+    ucx_list_free(left);
+}