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/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/File.h>
#include <LibTest/TestCase.h>
#include <unistd.h>
static bool files_have_same_contents(String filename1, String filename2)
{
auto file1 = Core::File::open(filename1, Core::OpenMode::ReadOnly).value();
auto file2 = Core::File::open(filename2, Core::OpenMode::ReadOnly).value();
auto contents1 = file1->read_all(), contents2 = file2->read_all();
return contents1 == contents2;
}
TEST_CASE(file_readline)
{
auto path = "long_lines.txt";
auto file_or_error = Core::File::open(path, Core::OpenMode::ReadOnly);
if (file_or_error.is_error()) {
warnln("Failed to open {}: {}", path, file_or_error.error());
VERIFY_NOT_REACHED();
}
auto file = file_or_error.release_value();
auto output_path = "/tmp/output.txt";
auto outfile_or_error = Core::File::open(output_path, Core::OpenMode::WriteOnly);
auto outputfile = outfile_or_error.release_value();
while (file->can_read_line()) {
outputfile->write(file->read_line());
outputfile->write("\n"sv);
}
file->close();
outputfile->close();
VERIFY(files_have_same_contents(path, output_path));
unlink(output_path);
}
TEST_CASE(file_get_read_position)
{
const String path = "10kb.txt";
auto file = Core::File::open(path, Core::OpenMode::ReadOnly).release_value();
const size_t step_size = 98;
for (size_t i = 0; i < 10240 - step_size; i += step_size) {
auto read_buffer = file->read(step_size);
EXPECT_EQ(read_buffer.size(), step_size);
for (size_t j = 0; j < read_buffer.size(); j++) {
EXPECT_EQ(static_cast<u32>(read_buffer[j] - '0'), (i + j) % 10);
}
off_t offset = 0;
VERIFY(file->seek(0, Core::SeekMode::FromCurrentPosition, &offset));
EXPECT_EQ(offset, static_cast<off_t>(i + step_size));
}
{
off_t offset = 0;
VERIFY(file->seek(0, Core::SeekMode::FromEndPosition, &offset));
EXPECT_EQ(offset, 10240);
}
{
off_t offset = 0;
VERIFY(file->seek(0, Core::SeekMode::SetPosition, &offset));
EXPECT_EQ(offset, 0);
}
}
TEST_CASE(file_lines_range)
{
auto path = "long_lines.txt";
auto file_or_error = Core::File::open(path, Core::OpenMode::ReadOnly);
if (file_or_error.is_error()) {
warnln("Failed to open {}: {}", path, file_or_error.error());
VERIFY_NOT_REACHED();
}
auto file = file_or_error.release_value();
auto output_path = "/tmp/output.txt";
auto outfile_or_error = Core::File::open(output_path, Core::OpenMode::WriteOnly);
auto outputfile = outfile_or_error.release_value();
for (auto line : file->lines()) {
outputfile->write(line);
outputfile->write("\n"sv);
}
file->close();
outputfile->close();
VERIFY(files_have_same_contents(path, output_path));
unlink(output_path);
}
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