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// 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/message_loop/message_loop.h>
#include <base/run_loop.h>
#include <brillo/message_loops/base_message_loop.h>
#include <gtest/gtest.h>
namespace brillo {
class AsynchronousSignalHandlerTest : public ::testing::Test {
public:
AsynchronousSignalHandlerTest() {}
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::MessageLoopForIO base_loop_;
BaseMessageLoop brillo_loop_{&base_loop_};
std::vector<struct signalfd_siginfo> infos_;
AsynchronousSignalHandler handler_;
private:
DISALLOW_COPY_AND_ASSIGN(AsynchronousSignalHandlerTest);
};
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);
}
}
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);
}
} // namespace brillo
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