| // Copyright 2014 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "brillo/asynchronous_signal_handler.h" |
| |
| #include <signal.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <vector> |
| |
| #include <base/bind.h> |
| #include <base/macros.h> |
| #include <base/run_loop.h> |
| #include <base/task/single_thread_task_executor.h> |
| #include <brillo/message_loops/base_message_loop.h> |
| #include <gtest/gtest.h> |
| |
| namespace brillo { |
| |
| class AsynchronousSignalHandlerTest : public ::testing::Test { |
| public: |
| AsynchronousSignalHandlerTest() {} |
| AsynchronousSignalHandlerTest(const AsynchronousSignalHandlerTest&) = delete; |
| AsynchronousSignalHandlerTest& operator=( |
| const AsynchronousSignalHandlerTest&) = delete; |
| |
| virtual ~AsynchronousSignalHandlerTest() {} |
| |
| virtual void SetUp() { |
| brillo_loop_.SetAsCurrent(); |
| handler_.Init(); |
| } |
| |
| virtual void TearDown() {} |
| |
| bool RecordInfoAndQuit(bool response, const struct signalfd_siginfo& info) { |
| infos_.push_back(info); |
| brillo_loop_.PostTask(FROM_HERE, brillo_loop_.QuitClosure()); |
| return response; |
| } |
| |
| protected: |
| base::SingleThreadTaskExecutor task_executor_{base::MessagePumpType::IO}; |
| BaseMessageLoop brillo_loop_{task_executor_.task_runner()}; |
| std::vector<struct signalfd_siginfo> infos_; |
| AsynchronousSignalHandler handler_; |
| }; |
| |
| TEST_F(AsynchronousSignalHandlerTest, CheckTerm) { |
| handler_.RegisterHandler( |
| SIGTERM, base::Bind(&AsynchronousSignalHandlerTest::RecordInfoAndQuit, |
| base::Unretained(this), true)); |
| EXPECT_EQ(0, infos_.size()); |
| EXPECT_EQ(0, kill(getpid(), SIGTERM)); |
| |
| // Spin the message loop. |
| MessageLoop::current()->Run(); |
| |
| ASSERT_EQ(1, infos_.size()); |
| EXPECT_EQ(SIGTERM, infos_[0].ssi_signo); |
| } |
| |
| TEST_F(AsynchronousSignalHandlerTest, CheckSignalUnregistration) { |
| handler_.RegisterHandler( |
| SIGCHLD, base::Bind(&AsynchronousSignalHandlerTest::RecordInfoAndQuit, |
| base::Unretained(this), true)); |
| EXPECT_EQ(0, infos_.size()); |
| EXPECT_EQ(0, kill(getpid(), SIGCHLD)); |
| |
| // Spin the message loop. |
| MessageLoop::current()->Run(); |
| |
| ASSERT_EQ(1, infos_.size()); |
| EXPECT_EQ(SIGCHLD, infos_[0].ssi_signo); |
| |
| EXPECT_EQ(0, kill(getpid(), SIGCHLD)); |
| |
| // Run the loop with a timeout, as no message are expected. |
| brillo_loop_.PostDelayedTask( |
| FROM_HERE, |
| base::Bind(&MessageLoop::BreakLoop, base::Unretained(&brillo_loop_)), |
| base::TimeDelta::FromMilliseconds(10)); |
| MessageLoop::current()->Run(); |
| |
| // The signal handle should have been unregistered. No new message are |
| // expected. |
| EXPECT_EQ(1, infos_.size()); |
| } |
| |
| TEST_F(AsynchronousSignalHandlerTest, CheckMultipleSignal) { |
| const uint8_t NB_SIGNALS = 5; |
| handler_.RegisterHandler( |
| SIGCHLD, base::Bind(&AsynchronousSignalHandlerTest::RecordInfoAndQuit, |
| base::Unretained(this), false)); |
| EXPECT_EQ(0, infos_.size()); |
| for (int i = 0; i < NB_SIGNALS; ++i) { |
| EXPECT_EQ(0, kill(getpid(), SIGCHLD)); |
| |
| // Spin the message loop. |
| MessageLoop::current()->Run(); |
| } |
| |
| ASSERT_EQ(NB_SIGNALS, infos_.size()); |
| for (int i = 0; i < NB_SIGNALS; ++i) { |
| EXPECT_EQ(SIGCHLD, infos_[i].ssi_signo); |
| } |
| } |
| |
| // TODO(crbug/1011829): This test is flaky. |
| #if 0 |
| TEST_F(AsynchronousSignalHandlerTest, CheckChld) { |
| handler_.RegisterHandler( |
| SIGCHLD, |
| base::Bind(&AsynchronousSignalHandlerTest::RecordInfoAndQuit, |
| base::Unretained(this), |
| false)); |
| pid_t child_pid = fork(); |
| if (child_pid == 0) { |
| _Exit(EXIT_SUCCESS); |
| } |
| |
| EXPECT_EQ(0, infos_.size()); |
| // Spin the message loop. |
| MessageLoop::current()->Run(); |
| |
| ASSERT_EQ(1, infos_.size()); |
| EXPECT_EQ(SIGCHLD, infos_[0].ssi_signo); |
| EXPECT_EQ(child_pid, infos_[0].ssi_pid); |
| EXPECT_EQ(static_cast<int>(CLD_EXITED), infos_[0].ssi_code); |
| EXPECT_EQ(EXIT_SUCCESS, infos_[0].ssi_status); |
| } |
| #endif |
| |
| } // namespace brillo |