115 lines
2.8 KiB
C++
115 lines
2.8 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include "ScopedSignalHandler.h"
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#include "TemporaryFile.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <unistd.h>
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TEST(unistd, sysconf_SC_MONOTONIC_CLOCK) {
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ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0);
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}
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TEST(unistd, sbrk) {
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void* initial_break = sbrk(0);
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void* new_break = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(initial_break) + 2000);
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ASSERT_EQ(0, brk(new_break));
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void* final_break = sbrk(0);
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ASSERT_EQ(final_break, new_break);
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}
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TEST(unistd, truncate) {
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TemporaryFile tf;
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ASSERT_EQ(0, close(tf.fd));
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ASSERT_EQ(0, truncate(tf.filename, 123));
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struct stat sb;
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ASSERT_EQ(0, stat(tf.filename, &sb));
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ASSERT_EQ(123, sb.st_size);
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}
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TEST(unistd, truncate64) {
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TemporaryFile tf;
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ASSERT_EQ(0, close(tf.fd));
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ASSERT_EQ(0, truncate64(tf.filename, 123));
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struct stat sb;
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ASSERT_EQ(0, stat(tf.filename, &sb));
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ASSERT_EQ(123, sb.st_size);
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}
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TEST(unistd, ftruncate) {
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TemporaryFile tf;
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ASSERT_EQ(0, ftruncate(tf.fd, 123));
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ASSERT_EQ(0, close(tf.fd));
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struct stat sb;
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ASSERT_EQ(0, stat(tf.filename, &sb));
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ASSERT_EQ(123, sb.st_size);
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}
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TEST(unistd, ftruncate64) {
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TemporaryFile tf;
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ASSERT_EQ(0, ftruncate64(tf.fd, 123));
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ASSERT_EQ(0, close(tf.fd));
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struct stat sb;
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ASSERT_EQ(0, stat(tf.filename, &sb));
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ASSERT_EQ(123, sb.st_size);
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}
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static bool gPauseTestFlag = false;
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static void PauseTestSignalHandler(int) {
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gPauseTestFlag = true;
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}
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TEST(unistd, pause) {
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ScopedSignalHandler handler(SIGALRM, PauseTestSignalHandler);
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alarm(1);
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ASSERT_FALSE(gPauseTestFlag);
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ASSERT_EQ(-1, pause());
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ASSERT_TRUE(gPauseTestFlag);
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}
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TEST(unistd, read) {
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int fd = open("/proc/version", O_RDONLY);
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ASSERT_TRUE(fd != -1);
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char buf[5];
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ASSERT_EQ(5, read(fd, buf, 5));
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ASSERT_EQ(buf[0], 'L');
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ASSERT_EQ(buf[1], 'i');
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ASSERT_EQ(buf[2], 'n');
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ASSERT_EQ(buf[3], 'u');
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ASSERT_EQ(buf[4], 'x');
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close(fd);
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}
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TEST(unistd, read_EBADF) {
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// read returns ssize_t which is 64-bits on LP64, so it's worth explicitly checking that
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// our syscall stubs correctly return a 64-bit -1.
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char buf[1];
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ASSERT_EQ(-1, read(-1, buf, sizeof(buf)));
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ASSERT_EQ(EBADF, errno);
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}
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