refactor and test ts start search

solanaceae/ngc_hs2/test_ts_binarysearch.cpp

@@ -0,0 +1,82 @@
+#include "./ts_find_start.hpp"
+
+#include <solanaceae/message3/registry_message_model.hpp>
+#include <solanaceae/message3/components.hpp>
+
+#include <cassert>
+
+int main(void) {
+	Message3Registry msg_reg;
+
+	{
+		std::cout << "TEST empty reg\n";
+		auto ts_view = msg_reg.view<Message::Components::Timestamp>();
+		const auto res = find_start_by_ts(ts_view, 42);
+		assert(res == ts_view.end());
+	}
+
+	{
+		std::cout << "TEST single msg newer (fail)\n";
+		Message3Handle msg{msg_reg, msg_reg.create()};
+		msg.emplace<Message::Components::Timestamp>(43ul);
+
+		auto ts_view = msg_reg.view<Message::Components::Timestamp>();
+		const auto res = find_start_by_ts(ts_view, 42);
+		assert(res == ts_view.end());
+
+		msg.destroy();
+	}
+
+	{
+		std::cout << "TEST single msg same (succ)\n";
+		Message3Handle msg{msg_reg, msg_reg.create()};
+		msg.emplace<Message::Components::Timestamp>(42ul);
+
+		auto ts_view = msg_reg.view<Message::Components::Timestamp>();
+		const auto res = find_start_by_ts(ts_view, 42);
+		assert(res != ts_view.end());
+
+		msg.destroy();
+	}
+
+	{
+		std::cout << "TEST single msg older (succ)\n";
+		Message3Handle msg{msg_reg, msg_reg.create()};
+		msg.emplace<Message::Components::Timestamp>(41ul);
+
+		auto ts_view = msg_reg.view<Message::Components::Timestamp>();
+		const auto res = find_start_by_ts(ts_view, 42);
+		assert(res != ts_view.end());
+
+		msg.destroy();
+	}
+
+	{
+		std::cout << "TEST multi msg\n";
+		Message3Handle msg{msg_reg, msg_reg.create()};
+		msg.emplace<Message::Components::Timestamp>(41ul);
+		Message3Handle msg2{msg_reg, msg_reg.create()};
+		msg2.emplace<Message::Components::Timestamp>(42ul);
+		Message3Handle msg3{msg_reg, msg_reg.create()};
+		msg3.emplace<Message::Components::Timestamp>(43ul);
+
+		// see message3/message_time_sort.cpp
+		msg_reg.sort<Message::Components::Timestamp>([](const auto& lhs, const auto& rhs) -> bool {
+			return lhs.ts > rhs.ts;
+		}, entt::insertion_sort{});
+
+		auto ts_view = msg_reg.view<Message::Components::Timestamp>();
+		auto res = find_start_by_ts(ts_view, 42);
+		assert(res != ts_view.end());
+		assert(*res == msg2);
+		res++;
+		assert(*res == msg);
+
+		msg3.destroy();
+		msg2.destroy();
+		msg.destroy();
+	}
+
+	return 0;
+}
+