blob: f50c102f6b187d922a4a2cbfa63ea6bee3eeee0b [file] [log] [blame]
/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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 <gtest/gtest.h>
#include "ScopedSignalHandler.h"
#include "TemporaryFile.h"
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <unistd.h>
TEST(unistd, sysconf_SC_MONOTONIC_CLOCK) {
ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0);
}
TEST(unistd, sbrk) {
void* initial_break = sbrk(0);
void* new_break = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(initial_break) + 2000);
ASSERT_EQ(0, brk(new_break));
void* final_break = sbrk(0);
ASSERT_EQ(final_break, new_break);
}
TEST(unistd, truncate) {
TemporaryFile tf;
ASSERT_EQ(0, close(tf.fd));
ASSERT_EQ(0, truncate(tf.filename, 123));
struct stat sb;
ASSERT_EQ(0, stat(tf.filename, &sb));
ASSERT_EQ(123, sb.st_size);
}
TEST(unistd, truncate64) {
TemporaryFile tf;
ASSERT_EQ(0, close(tf.fd));
ASSERT_EQ(0, truncate64(tf.filename, 123));
struct stat sb;
ASSERT_EQ(0, stat(tf.filename, &sb));
ASSERT_EQ(123, sb.st_size);
}
TEST(unistd, ftruncate) {
TemporaryFile tf;
ASSERT_EQ(0, ftruncate(tf.fd, 123));
ASSERT_EQ(0, close(tf.fd));
struct stat sb;
ASSERT_EQ(0, stat(tf.filename, &sb));
ASSERT_EQ(123, sb.st_size);
}
TEST(unistd, ftruncate64) {
TemporaryFile tf;
ASSERT_EQ(0, ftruncate64(tf.fd, 123));
ASSERT_EQ(0, close(tf.fd));
struct stat sb;
ASSERT_EQ(0, stat(tf.filename, &sb));
ASSERT_EQ(123, sb.st_size);
}
static bool gPauseTestFlag = false;
static void PauseTestSignalHandler(int) {
gPauseTestFlag = true;
}
TEST(unistd, pause) {
ScopedSignalHandler handler(SIGALRM, PauseTestSignalHandler);
alarm(1);
ASSERT_FALSE(gPauseTestFlag);
ASSERT_EQ(-1, pause());
ASSERT_TRUE(gPauseTestFlag);
}
TEST(unistd, read) {
int fd = open("/proc/version", O_RDONLY);
ASSERT_TRUE(fd != -1);
char buf[5];
ASSERT_EQ(5, read(fd, buf, 5));
ASSERT_EQ(buf[0], 'L');
ASSERT_EQ(buf[1], 'i');
ASSERT_EQ(buf[2], 'n');
ASSERT_EQ(buf[3], 'u');
ASSERT_EQ(buf[4], 'x');
close(fd);
}
TEST(unistd, read_EBADF) {
// read returns ssize_t which is 64-bits on LP64, so it's worth explicitly checking that
// our syscall stubs correctly return a 64-bit -1.
char buf[1];
ASSERT_EQ(-1, read(-1, buf, sizeof(buf)));
ASSERT_EQ(EBADF, errno);
}
TEST(unistd, alarm) {
ASSERT_EQ(0U, alarm(0));
}