Prepare ntcore for merge into allwpilib.

ntcore/manualTests/native/server.cpp

@@ -0,0 +1,37 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2017-2018. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include <chrono>
+#include <climits>
+#include <cstdio>
+#include <thread>
+
+#include "ntcore.h"
+
+int main() {
+  auto inst = nt::GetDefaultInstance();
+  nt::AddLogger(inst,
+                [](const nt::LogMessage& msg) {
+                  std::fputs(msg.message.c_str(), stderr);
+                  std::fputc('\n', stderr);
+                },
+                0, UINT_MAX);
+  nt::StartServer(inst, "persistent.ini", "", 10000);
+  std::this_thread::sleep_for(std::chrono::seconds(1));
+
+  auto foo = nt::GetEntry(inst, "/foo");
+  nt::SetEntryValue(foo, nt::Value::MakeDouble(0.5));
+  nt::SetEntryFlags(foo, NT_PERSISTENT);
+
+  auto foo2 = nt::GetEntry(inst, "/foo2");
+  nt::SetEntryValue(foo2, nt::Value::MakeDouble(0.5));
+  nt::SetEntryValue(foo2, nt::Value::MakeDouble(0.7));
+  nt::SetEntryValue(foo2, nt::Value::MakeDouble(0.6));
+  nt::SetEntryValue(foo2, nt::Value::MakeDouble(0.5));
+
+  std::this_thread::sleep_for(std::chrono::seconds(10));
+}