diff --git a/tests/src/test_transform.cpp b/tests/src/test_transform.cpp
new file mode 100644
index 0000000..c97cf5f
--- /dev/null
+++ b/tests/src/test_transform.cpp
@@ -0,0 +1,26 @@
+#include "utils/transform.hpp"
+
+#include <set>
+#include <vector>
+
+#include <gmock/gmock.h>
+
+using namespace testing;
+
+TEST(TestTransform, transformsVector)
+{
+    std::vector<int> input = {1, 2, 3};
+    std::vector<std::string> output =
+        utils::transform(input, [](int v) { return std::to_string(v); });
+    EXPECT_TRUE(utils::detail::has_member_reserve_v<std::vector<std::string>>);
+    ASSERT_THAT(output, ElementsAre("1", "2", "3"));
+}
+
+TEST(TestTransform, transformsSet)
+{
+    std::set<int> input = {1, 2, 3};
+    std::set<std::string> output =
+        utils::transform(input, [](int v) { return std::to_string(v); });
+    EXPECT_FALSE(utils::detail::has_member_reserve_v<std::set<std::string>>);
+    ASSERT_THAT(output, ElementsAre("1", "2", "3"));
+}