+/*
+ * Copyright 2017 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <folly/io/async/AsyncSignalHandler.h>
+#include <folly/io/async/EventBase.h>
+
+#include <folly/portability/GTest.h>
+
+using namespace folly;
+
+namespace {
+class TestSignalHandler : public AsyncSignalHandler {
+ public:
+ using AsyncSignalHandler::AsyncSignalHandler;
+
+ void signalReceived(int /* signum */) noexcept override {
+ called = true;
+ }
+
+ bool called{false};
+};
+}
+
+TEST(AsyncSignalHandler, basic) {
+ EventBase evb;
+ TestSignalHandler handler{&evb};
+
+ handler.registerSignalHandler(SIGUSR1);
+ kill(getpid(), SIGUSR1);
+
+ EXPECT_FALSE(handler.called);
+ evb.loopOnce(EVLOOP_NONBLOCK);
+ EXPECT_TRUE(handler.called);
+}
+
+TEST(AsyncSignalHandler, attachEventBase) {
+ TestSignalHandler handler{nullptr};
+ EXPECT_FALSE(handler.getEventBase());
+ EventBase evb;
+
+ handler.attachEventBase(&evb);
+ EXPECT_EQ(&evb, handler.getEventBase());
+
+ handler.registerSignalHandler(SIGUSR1);
+ kill(getpid(), SIGUSR1);
+ EXPECT_FALSE(handler.called);
+ evb.loopOnce(EVLOOP_NONBLOCK);
+ EXPECT_TRUE(handler.called);
+
+ handler.unregisterSignalHandler(SIGUSR1);
+ handler.detachEventBase();
+ EXPECT_FALSE(handler.getEventBase());
+}