fix

Author: hzhdlrp

libraries/multi_index_lru/tests/benchmarks/lru_google_benchmarks.h

@@ -107,6 +107,7 @@ template<
     template<typename, typename, typename> class LRUCacheContainer
 >
 void google_benchmark() {
+#if __cplusplus >= 202002L
     using UserCache = LRUCacheContainer<
         User,
         indexed_by<
@@ -120,7 +121,7 @@ void google_benchmark() {
     lru_concept_assert_for_one_tag(UserCache, id_tag, int, User);
     lru_concept_assert_for_one_tag(UserCache, email_tag, std::string, User);
     lru_concept_assert_for_one_tag(UserCache, name_tag, std::string, User);
-
+#endif
     for (auto size : CACHE_SIZES) {
         ::benchmark::RegisterBenchmark(
             "GetOperations", 

libraries/multi_index_lru/tests/tests/lru_basic_tests.h

@@ -2,6 +2,7 @@
 
 #include <iostream>
 #include <string>
+#include <cassert>
 
 #include "../lru_container_concept.h"
 
@@ -52,22 +53,22 @@ void test_lru_users() {
 
     // find by id
     auto by_id = cache.template get<id_tag>().find(1);
-    assert(by_id != cache.template get<id_tag>().end());
-    assert(by_id->get().name == "Alice");
+    assert((by_id != cache.template get<id_tag>().end()));
+    assert((by_id->get().name == "Alice"));
 
     // find by email
     auto by_email = cache.template get<email_tag>().find("[email protected]");
-    assert(by_email != cache.template get<email_tag>().end());
-    assert(by_email->get().id == 2);
+    assert((by_email != cache.template get<email_tag>().end()));
+    assert((by_email->get().id == 2));
 
     //find by name
     auto by_name = cache.template get<name_tag>().find("Charlie");
-    assert(by_name != cache.template get<name_tag>().end());
-    assert(by_name->get().email == "[email protected]");
+    assert((by_name != cache.template get<name_tag>().end()));
+    assert((by_name->get().email == "[email protected]"));
 
     //find by email
     auto it = cache.template find<email_tag, std::string>("[email protected]");
-    assert(it != cache.template get<email_tag>().end());
+    assert((it != cache.template get<email_tag>().end()));
 
     //find by id
     cache.template find<id_tag, int>(1); 
@@ -113,7 +114,7 @@ void test_lru_products() {
     cache.emplace(Product{"A2", "Mouse", 29.99});
 
     auto laptop = cache.template find<sku_tag, std::string>("A1");
-    assert(laptop != cache.template get<sku_tag>().end());
+    assert((laptop != cache.template get<sku_tag>().end()));
 
     // A1 was used, so A2 should be ousted
     cache.emplace(Product{"A3", "Keyboard", 79.99});