diff --git a/tests/test_positional_arguments.hpp b/tests/test_positional_arguments.hpp
index a5164ac..67a1c8b 100644
--- a/tests/test_positional_arguments.hpp
+++ b/tests/test_positional_arguments.hpp
@@ -44,7 +44,7 @@ TEST_CASE("Parse positional arguments with optional arguments", "[positional_arg
   REQUIRE(outputs[1] == "output.mesh");
 }
 
-TEST_CASE("Parse positional arguments with optional arguments in the middle", "[parse_args]") {
+TEST_CASE("Parse positional arguments with optional arguments in the middle", "[positional_arguments]") {
   argparse::ArgumentParser program("test");
   program.add_argument("input");
   program.add_argument("output").nargs(2);
@@ -59,4 +59,14 @@ TEST_CASE("Parse positional arguments with optional arguments in the middle", "[
   REQUIRE(outputs.size() == 2);
   REQUIRE(outputs[0] == "thrust_profile.csv");
   REQUIRE(outputs[1] == "output.mesh");
+}
+
+TEST_CASE("Square a number", "[positional_arguments]") {
+  argparse::ArgumentParser program;
+  program.add_argument("square")
+    .help("display a square of a given number")
+    .action([](const std::string& value) { auto integer = std::stoi(value); return integer * integer; });
+
+  program.parse_args({"./main", "15"});
+  REQUIRE(program.get<int>("square") == 225);
 }
\ No newline at end of file