/*
 * Copyright (c) 2022-2023 Huawei Device Co., Ltd.
 * 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 "dfx_func_hook_unittest.h"

#include <csignal>
#include <sys/wait.h>
#include <unistd.h>

#include "dfx_exit_hook.h"

using namespace OHOS::HiviewDFX;
using namespace testing::ext;
using namespace std;
void DfxFuncHookUnitTest::SetUpTestCase(void)
{
}

void DfxFuncHookUnitTest::TearDownTestCase(void)
{
}

void DfxFuncHookUnitTest::SetUp(void)
{
    StartHookExitFunc();
}

void DfxFuncHookUnitTest::TearDown(void)
{
}

namespace {
/**
 * @tc.name: FuncHookTest001
 * @tc.desc: fork a child process and exit with calling _exit
 * @tc.type: FUNC
 */
HWTEST_F(DfxFuncHookUnitTest, FuncHookTest001, TestSize.Level3)
{
    GTEST_LOG_(INFO) << "FuncHookTest001: start.";
    const int retCode = 99;
    pid_t pid = fork();
    if (pid < 0) {
        return;
    }

    if (pid == 0) {
        exit(retCode);
    } else {
        int status;
        int ret = waitpid(pid, &status, 0);
        printf("child ret with pid:%d status:%d\n", ret, status);
        if (WIFEXITED(status)) {
            int code = WEXITSTATUS(status);
            printf("Exit code was %d\n", code);
            EXPECT_EQ(code, retCode);
        }
    }
    GTEST_LOG_(INFO) << "FuncHookTest001: end.";
}

/**
 * @tc.name: FuncHookTest002
 * @tc.desc: fork a child process and kill it in parent process
 * @tc.type: FUNC
 */
HWTEST_F(DfxFuncHookUnitTest, FuncHookTest002, TestSize.Level3)
{
    GTEST_LOG_(INFO) << "FuncHookTest002: start.";
    pid_t pid = fork();
    if (pid < 0) {
        return;
    }

    if (pid == 0) {
        while (true) {
            sleep(1);
        }
    } else {
        printf("child pid:%d\n", pid);
        kill(pid, SIGKILL);
        int status;
        int ret = waitpid(pid, &status, 0);
        printf("child ret with pid:%d status:%d\n", ret, status);
        if (WIFSIGNALED(status)) {
            int signal = WTERMSIG(status);
            printf("Exit signal was %d\n", signal);
            EXPECT_EQ(signal, SIGKILL);
        }
    }
    GTEST_LOG_(INFO) << "FuncHookTest002: end.";
}
}