diff --git a/test/test_required_arguments.hpp b/test/test_required_arguments.hpp
new file mode 100644
index 0000000..ffb45a9
--- /dev/null
+++ b/test/test_required_arguments.hpp
@@ -0,0 +1,45 @@
+#pragma once
+#include <catch.hpp>
+#include <argparse.hpp>
+
+TEST_CASE("Parse required arguments which is not set and doesn't have default value.", "[required_arguments]") {
+	argparse::ArgumentParser program("test");
+	program.add_argument("--output", "-o").required();
+	REQUIRE_THROWS(program.parse_args({ "./main" }));
+}
+
+TEST_CASE("Parse required arguments without default value which is set as empty value and doesn't have default value.", "[required_arguments]") {
+	argparse::ArgumentParser program("test");
+	program.add_argument("--output", "-o").required();
+	REQUIRE_THROWS(program.parse_args({ "./main", "-o" }));
+}
+
+TEST_CASE("Parse required arguments without default value which is set as some value and doesn't have default value.", "[required_arguments]") {
+	argparse::ArgumentParser program("test");
+	program.add_argument("--output", "-o").required();
+	program.parse_args({ "./main", "-o", "filename" });
+	REQUIRE(program.get("--output") == "filename");
+	REQUIRE(program.get("-o") == "filename");
+}
+
+TEST_CASE("Parse required arguments which is not set and has default value.", "[required_arguments]") {
+	argparse::ArgumentParser program("test");
+	program.add_argument("--output", "-o").required().default_value(std::string("filename"));
+	program.parse_args({ "./main" });
+	REQUIRE(program.get("--output") == "filename");
+	REQUIRE(program.get("-o") == "filename");
+}
+
+TEST_CASE("Parse required arguments without default value which is set as empty and has default value.", "[required_arguments]") {
+	argparse::ArgumentParser program("test");
+	program.add_argument("--output", "-o").required().default_value(std::string("filename"));
+	REQUIRE_THROWS(program.parse_args({ "./main", "-o" }));
+}
+
+TEST_CASE("Parse required arguments without default value which is set as some value and has default value.", "[required_arguments]") {
+	argparse::ArgumentParser program("test");
+	program.add_argument("--output", "-o").required().default_value(std::string("filename"));
+	program.parse_args({ "./main", "-o", "anotherfile" });
+	REQUIRE(program.get("--output") == "anotherfile");
+	REQUIRE(program.get("-o") == "anotherfile");
+}
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