chore: added no action test (#48)

Author: zaucy

runtime/test/runtime_test.cc

@@ -36,6 +36,9 @@ void runtime_test::MakeAnother::impl(context& ctx) {
 	ctx._ctx.generate(ctx.get<ComponentA>());
 }
 
+void runtime_test::TestAction::impl(context& ctx) {
+}
+
 void runtime_test::AlwaysRemove::impl(context& ctx) {
 	// This trivial remove should not even be required:
 	// SEE: https://github.com/ecsact-dev/ecsact_lang_cpp/issues/80
@@ -797,6 +800,36 @@ TEST(Core, MultiPkgUpdate) {
 	}
 }
 
+TEST(Core, NoAction) {
+	static bool action_executed = false;
+
+	ASSERT_TRUE(ecsact_set_system_execution_impl(
+		ecsact_id_cast<ecsact_system_like_id>(runtime_test::TestAction::id),
+		[](ecsact_system_execution_context*) { action_executed = true; }
+	));
+
+	auto reg = ecsact::core::registry("Core_NoAction");
+
+	auto test_entity = reg.create_entity();
+	reg.add_component(test_entity, runtime_test::ComponentA{});
+
+	reg.execute_systems();
+
+	ASSERT_FALSE(action_executed);
+
+	auto exec_opts = ecsact::core::execution_options{};
+
+	auto exec_err = reg.execute_systems(std::array{exec_opts});
+	ASSERT_EQ(exec_err, ECSACT_EXEC_SYS_OK);
+	ASSERT_FALSE(action_executed);
+
+	auto evc = ecsact::core::execution_events_collector<>{};
+
+	exec_err = reg.execute_systems(std::array{exec_opts}, evc);
+	ASSERT_EQ(exec_err, ECSACT_EXEC_SYS_OK);
+	ASSERT_FALSE(action_executed);
+}
+
 #ifdef ECSACT_ENTT_TEST_STATIC_SYSTEM_IMPL
 TEST(Core, StaticSystemImpl) {
 	auto reg_id = ecsact_create_registry("StaticSystemImpl");

runtime/test/runtime_test.ecsact

@@ -61,6 +61,10 @@ action AssocTestAction {
 	adds OtherEntityComponent;
 }
 
+action TestAction {
+	readwrite ComponentA;
+}
+
 component AddAssocTestComponent {
 	i32 num;
 }