diff --git a/tests/src/unit-algorithms.cpp b/tests/src/unit-algorithms.cpp
index be5789bba..c7aa030fd 100644
--- a/tests/src/unit-algorithms.cpp
+++ b/tests/src/unit-algorithms.cpp
@@ -306,7 +306,7 @@ TEST_CASE("algorithms")
         }
     }
 
-    /*
+
     SECTION("copy")
     {
         SECTION("copy without if")
@@ -321,12 +321,13 @@ TEST_CASE("algorithms")
         SECTION("copy if")
         {
             json dest_arr;
-            const json source_arr = {0,3,6,9,12,15,20};
+            const json source_arr = {0, 3, 6, 9, 12, 15, 20};
 
 
-            std::copy_if(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr), [](const json& _value) {
+            std::copy_if(source_arr.begin(), source_arr.end(), std::back_inserter(dest_arr), [](const json & _value)
+            {
                 return _value.get<int>() % 3 == 0;
-             });
+            });
             CHECK(dest_arr == json({0, 3, 6, 9, 12, 15}));
         }
         SECTION("copy n")
@@ -341,7 +342,6 @@ TEST_CASE("algorithms")
         }
 
     }
-    */