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/*
* Copyright (C) 2015 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 "adb_io.h"
#include <gtest/gtest.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string>
#include <android-base/file.h>
// All of these tests fail on Windows because they use the C Runtime open(),
// but the adb_io APIs expect file descriptors from adb_open(). This could
// theoretically be fixed by making adb_read()/adb_write() fallback to using
// read()/write() if an unrecognized fd is used, and by making adb_open() return
// fds far from the range that open() returns. But all of that might defeat the
// purpose of the tests.
#if defined(_WIN32)
#define POSIX_TEST(x,y) TEST(DISABLED_ ## x,y)
#else
#define POSIX_TEST TEST
#endif
POSIX_TEST(io, ReadFdExactly_whole) {
const char expected[] = "Foobar";
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
ASSERT_TRUE(android::base::WriteStringToFd(expected, tf.fd)) << strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
// Test reading the whole file.
char buf[sizeof(expected)] = {};
ASSERT_TRUE(ReadFdExactly(tf.fd, buf, sizeof(buf) - 1)) << strerror(errno);
EXPECT_STREQ(expected, buf);
}
POSIX_TEST(io, ReadFdExactly_eof) {
const char expected[] = "Foobar";
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
ASSERT_TRUE(android::base::WriteStringToFd(expected, tf.fd)) << strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
// Test that not having enough data will fail.
char buf[sizeof(expected) + 1] = {};
ASSERT_FALSE(ReadFdExactly(tf.fd, buf, sizeof(buf)));
EXPECT_EQ(0, errno) << strerror(errno);
}
POSIX_TEST(io, ReadFdExactly_partial) {
const char input[] = "Foobar";
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
ASSERT_TRUE(android::base::WriteStringToFd(input, tf.fd)) << strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
// Test reading a partial file.
char buf[sizeof(input) - 1] = {};
ASSERT_TRUE(ReadFdExactly(tf.fd, buf, sizeof(buf) - 1));
std::string expected(input);
expected.pop_back();
EXPECT_STREQ(expected.c_str(), buf);
}
POSIX_TEST(io, WriteFdExactly_whole) {
const char expected[] = "Foobar";
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
// Test writing the whole string to the file.
ASSERT_TRUE(WriteFdExactly(tf.fd, expected, sizeof(expected)))
<< strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
std::string s;
ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
EXPECT_STREQ(expected, s.c_str());
}
POSIX_TEST(io, WriteFdExactly_partial) {
const char buf[] = "Foobar";
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
// Test writing a partial string to the file.
ASSERT_TRUE(WriteFdExactly(tf.fd, buf, sizeof(buf) - 2)) << strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
std::string expected(buf);
expected.pop_back();
std::string s;
ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
EXPECT_EQ(expected, s);
}
POSIX_TEST(io, WriteFdExactly_ENOSPC) {
int fd = open("/dev/full", O_WRONLY);
ASSERT_NE(-1, fd);
char buf[] = "foo";
ASSERT_FALSE(WriteFdExactly(fd, buf, sizeof(buf)));
ASSERT_EQ(ENOSPC, errno);
}
POSIX_TEST(io, WriteFdExactly_string) {
const char str[] = "Foobar";
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
// Test writing a partial string to the file.
ASSERT_TRUE(WriteFdExactly(tf.fd, str)) << strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
std::string s;
ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
EXPECT_STREQ(str, s.c_str());
}
POSIX_TEST(io, WriteFdFmt) {
TemporaryFile tf;
ASSERT_NE(-1, tf.fd);
// Test writing a partial string to the file.
ASSERT_TRUE(WriteFdFmt(tf.fd, "Foo%s%d", "bar", 123)) << strerror(errno);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
std::string s;
ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
EXPECT_STREQ("Foobar123", s.c_str());
}
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