1 files changed, 57 insertions, 0 deletions
diff --git a/nihil.cli/command.test.cc b/nihil.cli/command.test.cc
new file mode 100644
index 0000000..5ac52ed
--- /dev/null
+++ b/nihil.cli/command.test.cc
@@ -0,0 +1,57 @@
+// This source code is released into the public domain.
+
+#include <catch2/catch_test_macros.hpp>
+
+import nihil.std;
+import nihil.cli;
+
+namespace {
+inline constexpr auto *test_tags = "[nihil][nihil.cli][nihil.cli.command]";
+
+TEST_CASE("nihil::command invariants", test_tags)
+{
+	static_assert(!std::move_constructible<nihil::command>);
+	static_assert(!std::copy_constructible<nihil::command>);
+	static_assert(!std::is_copy_assignable_v<nihil::command>);
+	static_assert(!std::is_move_assignable_v<nihil::command>);
+
+	static_assert(std::destructible<nihil::command>);
+}
+
+SCENARIO("A command has a path", test_tags)
+{
+	GIVEN ("A command object with a path") {
+		auto cmd = nihil::command("foo bar baz");
+
+		THEN ("The path is correct") {
+			REQUIRE(cmd.path() == "foo bar baz");
+		}
+	}
+}
+
+SCENARIO("A command has a handler", test_tags)
+{
+	GIVEN ("A command object with a handler") {
+		auto handler_called = false;
+		auto cmd = nihil::command("foo bar baz", "foo bar baz -x", [&](int, char **) {
+			handler_called = true;
+			return 0;
+		});
+
+		THEN ("The usage is correct") {
+			REQUIRE(cmd.usage() == "foo bar baz -x");
+		}
+
+		AND_WHEN ("The command is invoked") {
+			auto ret = cmd.invoke(0, nullptr);
+
+			THEN ("The return value is 0") {
+				REQUIRE(ret.value() == 0);
+			}
+			AND_THEN ("The handler was called") {
+				REQUIRE(handler_called == true);
+			}
+		}
+	}
+}
+} // namespace