[ntcore] NetworkTables 4 (#3217)

wpilibc/src/test/native/cpp/event/NetworkBooleanEventTest.cpp

@@ -0,0 +1,46 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#include <networktables/BooleanTopic.h>
+#include <networktables/NetworkTableInstance.h>
+
+#include "frc/event/EventLoop.h"
+#include "frc/event/NetworkBooleanEvent.h"
+#include "gtest/gtest.h"
+
+using namespace frc;
+
+class NetworkBooleanEventTest : public ::testing::Test {
+ public:
+  NetworkBooleanEventTest() {
+    m_inst = nt::NetworkTableInstance::Create();
+    m_inst.StartLocal();
+  }
+
+  ~NetworkBooleanEventTest() override {
+    nt::NetworkTableInstance::Destroy(m_inst);
+  }
+
+  nt::NetworkTableInstance m_inst;
+};
+
+TEST_F(NetworkBooleanEventTest, Set) {
+  EventLoop loop;
+  int counter = 0;
+
+  auto pub = m_inst.GetTable("TestTable")->GetBooleanTopic("Test").Publish();
+
+  NetworkBooleanEvent(&loop, m_inst, "TestTable", "Test").IfHigh([&] {
+    ++counter;
+  });
+  pub.Set(false);
+  loop.Poll();
+  EXPECT_EQ(0, counter);
+  pub.Set(true);
+  loop.Poll();
+  EXPECT_EQ(1, counter);
+  pub.Set(false);
+  loop.Poll();
+  EXPECT_EQ(1, counter);
+}