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//===-- Unittests for isatty ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/errno/libc_errno.h"
#include "src/fcntl/open.h"
#include "src/unistd/close.h"
#include "src/unistd/isatty.h"
#include "test/UnitTest/ErrnoSetterMatcher.h"
#include "test/UnitTest/Test.h"
#include <sys/stat.h>
using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
TEST(LlvmLibcIsATTYTest, StdInOutTests) {
// If stdin is connected to a terminal, assume that all of the standard i/o
// fds are.
libc_errno = 0;
if (LIBC_NAMESPACE::isatty(0)) {
EXPECT_THAT(LIBC_NAMESPACE::isatty(0), Succeeds(1)); // stdin
EXPECT_THAT(LIBC_NAMESPACE::isatty(1), Succeeds(1)); // stdout
EXPECT_THAT(LIBC_NAMESPACE::isatty(2), Succeeds(1)); // stderr
} else {
EXPECT_THAT(LIBC_NAMESPACE::isatty(0), Fails(ENOTTY, 0)); // stdin
EXPECT_THAT(LIBC_NAMESPACE::isatty(1), Fails(ENOTTY, 0)); // stdout
EXPECT_THAT(LIBC_NAMESPACE::isatty(2), Fails(ENOTTY, 0)); // stderr
}
}
TEST(LlvmLibcIsATTYTest, BadFdTest) {
libc_errno = 0;
EXPECT_THAT(LIBC_NAMESPACE::isatty(-1), Fails(EBADF, 0)); // invalid fd
}
TEST(LlvmLibcIsATTYTest, DevTTYTest) {
constexpr const char *TTY_FILE = "/dev/tty";
libc_errno = 0;
int fd = LIBC_NAMESPACE::open(TTY_FILE, O_RDONLY);
if (fd > 0) {
ASSERT_ERRNO_SUCCESS();
EXPECT_THAT(LIBC_NAMESPACE::isatty(fd), Succeeds(1));
ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
}
}
TEST(LlvmLibcIsATTYTest, FileTest) {
constexpr const char *TEST_FILE = "testdata/isatty.test";
libc_errno = 0;
int fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
ASSERT_ERRNO_SUCCESS();
ASSERT_GT(fd, 0);
EXPECT_THAT(LIBC_NAMESPACE::isatty(fd), Fails(ENOTTY, 0));
ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
}
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