2ea0a58e01
Also clean up the implementation of all the pty functions, add tests,
and fix the stub implementations of ttyname(3) and ttyname_r(3).
Bug: https://code.google.com/p/android/issues/detail?id=58888
(cherry picked from commit 4916706cfe)
Change-Id: I5cb7a1c17b156456e4c4818e65f256eb8d045424
364 lines
8.4 KiB
C++
364 lines
8.4 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 "TemporaryFile.h"
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#include <errno.h>
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#include <libgen.h>
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#include <limits.h>
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#include <pthread.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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TEST(stdlib, drand48) {
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srand48(0x01020304);
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EXPECT_DOUBLE_EQ(0.65619299195623526, drand48());
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EXPECT_DOUBLE_EQ(0.18522597229772941, drand48());
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EXPECT_DOUBLE_EQ(0.42015087072844537, drand48());
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EXPECT_DOUBLE_EQ(0.061637783047395089, drand48());
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}
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TEST(stdlib, lrand48) {
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srand48(0x01020304);
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EXPECT_EQ(1409163720, lrand48());
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EXPECT_EQ(397769746, lrand48());
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EXPECT_EQ(902267124, lrand48());
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EXPECT_EQ(132366131, lrand48());
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}
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TEST(stdlib, random) {
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srandom(0x01020304);
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EXPECT_EQ(55436735, random());
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EXPECT_EQ(1399865117, random());
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EXPECT_EQ(2032643283, random());
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EXPECT_EQ(571329216, random());
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}
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TEST(stdlib, rand) {
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srand(0x01020304);
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EXPECT_EQ(55436735, rand());
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EXPECT_EQ(1399865117, rand());
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EXPECT_EQ(2032643283, rand());
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EXPECT_EQ(571329216, rand());
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}
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TEST(stdlib, mrand48) {
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srand48(0x01020304);
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EXPECT_EQ(-1476639856, mrand48());
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EXPECT_EQ(795539493, mrand48());
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EXPECT_EQ(1804534249, mrand48());
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EXPECT_EQ(264732262, mrand48());
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}
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TEST(stdlib, posix_memalign) {
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void* p;
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ASSERT_EQ(0, posix_memalign(&p, 512, 128));
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ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(p) % 512);
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free(p);
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// Can't align to a non-power of 2.
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ASSERT_EQ(EINVAL, posix_memalign(&p, 81, 128));
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}
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TEST(stdlib, realpath__NULL_filename) {
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errno = 0;
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char* p = realpath(NULL, NULL);
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ASSERT_TRUE(p == NULL);
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ASSERT_EQ(EINVAL, errno);
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}
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TEST(stdlib, realpath__empty_filename) {
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errno = 0;
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char* p = realpath("", NULL);
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ASSERT_TRUE(p == NULL);
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ASSERT_EQ(ENOENT, errno);
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}
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TEST(stdlib, realpath__ENOENT) {
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errno = 0;
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char* p = realpath("/this/directory/path/almost/certainly/does/not/exist", NULL);
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ASSERT_TRUE(p == NULL);
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ASSERT_EQ(ENOENT, errno);
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}
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TEST(stdlib, realpath) {
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// Get the name of this executable.
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char executable_path[PATH_MAX];
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int rc = readlink("/proc/self/exe", executable_path, sizeof(executable_path));
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ASSERT_NE(rc, -1);
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executable_path[rc] = '\0';
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char buf[PATH_MAX + 1];
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char* p = realpath("/proc/self/exe", buf);
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ASSERT_STREQ(executable_path, p);
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p = realpath("/proc/self/exe", NULL);
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ASSERT_STREQ(executable_path, p);
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free(p);
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}
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TEST(stdlib, qsort) {
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struct s {
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char name[16];
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static int comparator(const void* lhs, const void* rhs) {
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return strcmp(reinterpret_cast<const s*>(lhs)->name, reinterpret_cast<const s*>(rhs)->name);
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}
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};
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s entries[3];
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strcpy(entries[0].name, "charlie");
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strcpy(entries[1].name, "bravo");
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strcpy(entries[2].name, "alpha");
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qsort(entries, 3, sizeof(s), s::comparator);
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ASSERT_STREQ("alpha", entries[0].name);
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ASSERT_STREQ("bravo", entries[1].name);
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ASSERT_STREQ("charlie", entries[2].name);
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qsort(entries, 3, sizeof(s), s::comparator);
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ASSERT_STREQ("alpha", entries[0].name);
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ASSERT_STREQ("bravo", entries[1].name);
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ASSERT_STREQ("charlie", entries[2].name);
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}
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static void* TestBug57421_child(void* arg) {
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pthread_t main_thread = reinterpret_cast<pthread_t>(arg);
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pthread_join(main_thread, NULL);
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char* value = getenv("ENVIRONMENT_VARIABLE");
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if (value == NULL) {
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setenv("ENVIRONMENT_VARIABLE", "value", 1);
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}
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return NULL;
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}
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static void TestBug57421_main() {
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pthread_t t;
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ASSERT_EQ(0, pthread_create(&t, NULL, TestBug57421_child, reinterpret_cast<void*>(pthread_self())));
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pthread_exit(NULL);
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}
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// Even though this isn't really a death test, we have to say "DeathTest" here so gtest knows to
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// run this test (which exits normally) in its own process.
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TEST(stdlib_DeathTest, getenv_after_main_thread_exits) {
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// https://code.google.com/p/android/issues/detail?id=57421
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::testing::FLAGS_gtest_death_test_style = "threadsafe";
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ASSERT_EXIT(TestBug57421_main(), ::testing::ExitedWithCode(0), "");
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}
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TEST(stdlib, mkstemp) {
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TemporaryFile tf;
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struct stat sb;
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ASSERT_EQ(0, fstat(tf.fd, &sb));
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}
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TEST(stdlib, mkstemp64) {
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GenericTemporaryFile<mkstemp64> tf;
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struct stat64 sb;
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ASSERT_EQ(0, fstat64(tf.fd, &sb));
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ASSERT_EQ(O_LARGEFILE, fcntl(tf.fd, F_GETFL) & O_LARGEFILE);
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}
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TEST(stdlib, system) {
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int status;
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status = system("exit 0");
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ASSERT_TRUE(WIFEXITED(status));
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ASSERT_EQ(0, WEXITSTATUS(status));
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status = system("exit 1");
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ASSERT_TRUE(WIFEXITED(status));
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ASSERT_EQ(1, WEXITSTATUS(status));
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}
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TEST(stdlib, atof) {
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ASSERT_DOUBLE_EQ(1.23, atof("1.23"));
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}
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TEST(stdlib, strtod) {
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ASSERT_DOUBLE_EQ(1.23, strtod("1.23", NULL));
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}
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TEST(stdlib, strtof) {
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ASSERT_FLOAT_EQ(1.23, strtof("1.23", NULL));
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}
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TEST(stdlib, strtold) {
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ASSERT_DOUBLE_EQ(1.23, strtold("1.23", NULL));
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}
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TEST(stdlib, quick_exit) {
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pid_t pid = fork();
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ASSERT_NE(-1, pid) << strerror(errno);
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if (pid == 0) {
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quick_exit(99);
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}
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int status;
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ASSERT_EQ(pid, waitpid(pid, &status, 0));
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ASSERT_TRUE(WIFEXITED(status));
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ASSERT_EQ(99, WEXITSTATUS(status));
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}
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static int quick_exit_status = 0;
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static void quick_exit_1(void) {
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ASSERT_EQ(quick_exit_status, 0);
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quick_exit_status = 1;
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}
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static void quick_exit_2(void) {
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ASSERT_EQ(quick_exit_status, 1);
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}
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static void not_run(void) {
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FAIL();
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}
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TEST(stdlib, at_quick_exit) {
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pid_t pid = fork();
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ASSERT_NE(-1, pid) << strerror(errno);
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if (pid == 0) {
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ASSERT_EQ(at_quick_exit(quick_exit_2), 0);
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ASSERT_EQ(at_quick_exit(quick_exit_1), 0);
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atexit(not_run);
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quick_exit(99);
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}
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int status;
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ASSERT_EQ(pid, waitpid(pid, &status, 0));
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ASSERT_TRUE(WIFEXITED(status));
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ASSERT_EQ(99, WEXITSTATUS(status));
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}
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TEST(unistd, _Exit) {
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int pid = fork();
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ASSERT_NE(-1, pid) << strerror(errno);
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if (pid == 0) {
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_Exit(99);
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}
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int status;
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ASSERT_EQ(pid, waitpid(pid, &status, 0));
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ASSERT_TRUE(WIFEXITED(status));
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ASSERT_EQ(99, WEXITSTATUS(status));
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}
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TEST(stdlib, pty_smoke) {
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// getpt returns a pty with O_RDWR|O_NOCTTY.
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int fd = getpt();
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ASSERT_NE(-1, fd);
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// grantpt is a no-op.
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ASSERT_EQ(0, grantpt(fd));
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// ptsname_r should start "/dev/pts/".
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char name_r[128];
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ASSERT_EQ(0, ptsname_r(fd, name_r, sizeof(name_r)));
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name_r[9] = 0;
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ASSERT_STREQ("/dev/pts/", name_r);
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close(fd);
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}
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TEST(stdlib, posix_openpt) {
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int fd = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC);
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ASSERT_NE(-1, fd);
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close(fd);
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}
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TEST(stdlib, ptsname_r_ENOTTY) {
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errno = 0;
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char buf[128];
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ASSERT_EQ(ENOTTY, ptsname_r(STDOUT_FILENO, buf, sizeof(buf)));
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ASSERT_EQ(ENOTTY, errno);
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}
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TEST(stdlib, ptsname_r_EINVAL) {
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int fd = getpt();
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ASSERT_NE(-1, fd);
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errno = 0;
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char* buf = NULL;
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ASSERT_EQ(EINVAL, ptsname_r(fd, buf, 128));
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ASSERT_EQ(EINVAL, errno);
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close(fd);
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}
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TEST(stdlib, ptsname_r_ERANGE) {
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int fd = getpt();
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ASSERT_NE(-1, fd);
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errno = 0;
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char buf[1];
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ASSERT_EQ(ERANGE, ptsname_r(fd, buf, sizeof(buf)));
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ASSERT_EQ(ERANGE, errno);
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close(fd);
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}
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TEST(stdlib, ttyname_r) {
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int fd = getpt();
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ASSERT_NE(-1, fd);
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// ttyname_r returns "/dev/ptmx" for a pty.
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char name_r[128];
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ASSERT_EQ(0, ttyname_r(fd, name_r, sizeof(name_r)));
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ASSERT_STREQ("/dev/ptmx", name_r);
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close(fd);
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}
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TEST(stdlib, ttyname_r_ENOTTY) {
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int fd = open("/dev/null", O_WRONLY);
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errno = 0;
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char buf[128];
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ASSERT_EQ(ENOTTY, ttyname_r(fd, buf, sizeof(buf)));
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ASSERT_EQ(ENOTTY, errno);
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close(fd);
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}
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TEST(stdlib, ttyname_r_EINVAL) {
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int fd = getpt();
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ASSERT_NE(-1, fd);
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errno = 0;
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char* buf = NULL;
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ASSERT_EQ(EINVAL, ttyname_r(fd, buf, 128));
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ASSERT_EQ(EINVAL, errno);
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close(fd);
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}
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TEST(stdlib, ttyname_r_ERANGE) {
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int fd = getpt();
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ASSERT_NE(-1, fd);
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errno = 0;
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char buf[1];
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ASSERT_EQ(ERANGE, ttyname_r(fd, buf, sizeof(buf)));
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ASSERT_EQ(ERANGE, errno);
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close(fd);
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}
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TEST(stdlib, unlockpt_ENOTTY) {
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int fd = open("/dev/null", O_WRONLY);
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errno = 0;
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ASSERT_EQ(-1, unlockpt(fd));
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ASSERT_EQ(ENOTTY, errno);
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close(fd);
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}
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