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/*
* 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 <errno.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
TEST(stdio, tmpfile_fileno_fprintf_rewind_fgets) {
FILE* fp = tmpfile();
ASSERT_TRUE(fp != NULL);
int fd = fileno(fp);
ASSERT_NE(fd, -1);
struct stat sb;
int rc = fstat(fd, &sb);
ASSERT_NE(rc, -1);
ASSERT_EQ(sb.st_mode & 0777, 0600U);
rc = fprintf(fp, "hello\n");
ASSERT_EQ(rc, 6);
rewind(fp);
char buf[16];
char* s = fgets(buf, sizeof(buf), fp);
ASSERT_TRUE(s != NULL);
ASSERT_STREQ("hello\n", s);
fclose(fp);
}
TEST(stdio, getdelim) {
FILE* fp = tmpfile();
ASSERT_TRUE(fp != NULL);
const char* line_written = "This is a test";
int rc = fprintf(fp, "%s", line_written);
ASSERT_EQ(rc, static_cast<int>(strlen(line_written)));
rewind(fp);
char* word_read = NULL;
size_t allocated_length = 0;
const char* expected[] = { "This ", " ", "is ", "a ", "test" };
for (size_t i = 0; i < 5; ++i) {
ASSERT_FALSE(feof(fp));
ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), static_cast<int>(strlen(expected[i])));
ASSERT_GE(allocated_length, strlen(expected[i]));
ASSERT_STREQ(word_read, expected[i]);
}
// The last read should have set the end-of-file indicator for the stream.
ASSERT_TRUE(feof(fp));
clearerr(fp);
// getdelim returns -1 but doesn't set errno if we're already at EOF.
// It should set the end-of-file indicator for the stream, though.
errno = 0;
ASSERT_EQ(getdelim(&word_read, &allocated_length, ' ', fp), -1);
ASSERT_EQ(0, errno);
ASSERT_TRUE(feof(fp));
free(word_read);
fclose(fp);
}
TEST(stdio, getdelim_invalid) {
FILE* fp = tmpfile();
char* buffer = NULL;
size_t buffer_length = 0;
// The first argument can't be NULL.
errno = 0;
ASSERT_EQ(getdelim(NULL, &buffer_length, ' ', fp), -1);
ASSERT_EQ(EINVAL, errno);
// The second argument can't be NULL.
errno = 0;
ASSERT_EQ(getdelim(&buffer, NULL, ' ', fp), -1);
ASSERT_EQ(EINVAL, errno);
// The stream can't be closed.
fclose(fp);
errno = 0;
ASSERT_EQ(getdelim(&buffer, &buffer_length, ' ', fp), -1);
ASSERT_EQ(EBADF, errno);
}
TEST(stdio, getline) {
FILE* fp = tmpfile();
ASSERT_TRUE(fp != NULL);
const char* line_written = "This is a test for getline\n";
const size_t line_count = 5;
for (size_t i = 0; i < line_count; ++i) {
int rc = fprintf(fp, "%s", line_written);
ASSERT_EQ(rc, static_cast<int>(strlen(line_written)));
}
rewind(fp);
char* line_read = NULL;
size_t allocated_length = 0;
size_t read_line_count = 0;
ssize_t read_char_count;
while ((read_char_count = getline(&line_read, &allocated_length, fp)) != -1) {
ASSERT_EQ(read_char_count, static_cast<int>(strlen(line_written)));
ASSERT_GE(allocated_length, strlen(line_written));
ASSERT_STREQ(line_read, line_written);
++read_line_count;
}
ASSERT_EQ(read_line_count, line_count);
// The last read should have set the end-of-file indicator for the stream.
ASSERT_TRUE(feof(fp));
clearerr(fp);
// getline returns -1 but doesn't set errno if we're already at EOF.
// It should set the end-of-file indicator for the stream, though.
errno = 0;
ASSERT_EQ(getline(&line_read, &allocated_length, fp), -1);
ASSERT_EQ(0, errno);
ASSERT_TRUE(feof(fp));
free(line_read);
fclose(fp);
}
TEST(stdio, getline_invalid) {
FILE* fp = tmpfile();
char* buffer = NULL;
size_t buffer_length = 0;
// The first argument can't be NULL.
errno = 0;
ASSERT_EQ(getline(NULL, &buffer_length, fp), -1);
ASSERT_EQ(EINVAL, errno);
// The second argument can't be NULL.
errno = 0;
ASSERT_EQ(getline(&buffer, NULL, fp), -1);
ASSERT_EQ(EINVAL, errno);
// The stream can't be closed.
fclose(fp);
errno = 0;
ASSERT_EQ(getline(&buffer, &buffer_length, fp), -1);
ASSERT_EQ(EBADF, errno);
}
TEST(stdio, printf_ssize_t) {
#if __BIONIC__
// http://b/8253769
ASSERT_EQ(sizeof(__kernel_ssize_t), sizeof(long int));
ASSERT_EQ(sizeof(ssize_t), sizeof(long int));
#else
// TODO: add a .c file so we can test this for bionic --- our C ssize_t is fine.
// For our 32-bit C++ ABI, we have a ssize_t definition that confuses GCC into saying:
// error: format '%zd' expects argument of type 'signed size_t',
// but argument 4 has type 'ssize_t {aka long int}' [-Werror=format]
ssize_t v = 1;
char buf[32];
snprintf(buf, sizeof(buf), "%zd", v);
#endif
}
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