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LibCore: Add unit test for File::read_line

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coderdreams 2021-05-30 12:14:16 -03:00 • committed by Ali Mohammad Pur
parent 714a96619f
commit 9ffb3e7e30
4 changed files with 66 additions and 0 deletions
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46
Tests/LibCore/TestLibCoreIODevice.cpp Normal file
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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>
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, strerror(errno));
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");
}
file->close();
outputfile->close();
// Open files again for comparison since otherwise read_all returns empty (even when not closing the file)
file = Core::File::construct(path);
if (!file->open(Core::OpenMode::ReadOnly))
VERIFY_NOT_REACHED();
outputfile = Core::File::construct(output_path);
if (!outputfile->open(Core::OpenMode::ReadOnly))
VERIFY_NOT_REACHED();
auto inputData = file->read_all();
auto outputData = outputfile->read_all();
EXPECT(inputData.size() > 0);
EXPECT_EQ(inputData.size(), outputData.size());
// Compare char by char
for (size_t i = 0; i < inputData.size(); i++) {
EXPECT_EQ(inputData[i], outputData[i]);
}
}