1 //===-- Unittests for isatty ----------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "src/errno/libc_errno.h"
10 #include "src/fcntl/open.h"
11 #include "src/unistd/close.h"
12 #include "src/unistd/isatty.h"
13 #include "test/UnitTest/ErrnoSetterMatcher.h"
14 #include "test/UnitTest/Test.h"
15
16 #include <sys/stat.h>
17
18 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
19 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
20
TEST(LlvmLibcIsATTYTest,StdInOutTests)21 TEST(LlvmLibcIsATTYTest, StdInOutTests) {
22 // If stdin is connected to a terminal, assume that all of the standard i/o
23 // fds are.
24 LIBC_NAMESPACE::libc_errno = 0;
25 if (LIBC_NAMESPACE::isatty(0)) {
26 EXPECT_THAT(LIBC_NAMESPACE::isatty(0), Succeeds(1)); // stdin
27 EXPECT_THAT(LIBC_NAMESPACE::isatty(1), Succeeds(1)); // stdout
28 EXPECT_THAT(LIBC_NAMESPACE::isatty(2), Succeeds(1)); // stderr
29 } else {
30 EXPECT_THAT(LIBC_NAMESPACE::isatty(0), Fails(ENOTTY, 0)); // stdin
31 EXPECT_THAT(LIBC_NAMESPACE::isatty(1), Fails(ENOTTY, 0)); // stdout
32 EXPECT_THAT(LIBC_NAMESPACE::isatty(2), Fails(ENOTTY, 0)); // stderr
33 }
34 }
35
TEST(LlvmLibcIsATTYTest,BadFdTest)36 TEST(LlvmLibcIsATTYTest, BadFdTest) {
37 LIBC_NAMESPACE::libc_errno = 0;
38 EXPECT_THAT(LIBC_NAMESPACE::isatty(-1), Fails(EBADF, 0)); // invalid fd
39 }
40
TEST(LlvmLibcIsATTYTest,DevTTYTest)41 TEST(LlvmLibcIsATTYTest, DevTTYTest) {
42 constexpr const char *FILENAME = "/dev/tty";
43 auto TTY_FILE = libc_make_test_file_path(FILENAME);
44 LIBC_NAMESPACE::libc_errno = 0;
45 int fd = LIBC_NAMESPACE::open(TTY_FILE, O_RDONLY);
46 if (fd > 0) {
47 ASSERT_ERRNO_SUCCESS();
48 EXPECT_THAT(LIBC_NAMESPACE::isatty(fd), Succeeds(1));
49 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
50 }
51 }
52
TEST(LlvmLibcIsATTYTest,FileTest)53 TEST(LlvmLibcIsATTYTest, FileTest) {
54 constexpr const char *FILENAME = "isatty.test";
55 auto TEST_FILE = libc_make_test_file_path(FILENAME);
56 LIBC_NAMESPACE::libc_errno = 0;
57 int fd = LIBC_NAMESPACE::open(TEST_FILE, O_WRONLY | O_CREAT, S_IRWXU);
58 ASSERT_ERRNO_SUCCESS();
59 ASSERT_GT(fd, 0);
60 EXPECT_THAT(LIBC_NAMESPACE::isatty(fd), Fails(ENOTTY, 0));
61 ASSERT_THAT(LIBC_NAMESPACE::close(fd), Succeeds(0));
62 }
63