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47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/File.h>
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#include <LibTest/TestCase.h>
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#include <unistd.h>
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TEST_CASE(file_readline)
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{
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auto path = "long_lines.txt";
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auto file_or_error = Core::File::open(path, Core::OpenMode::ReadOnly);
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if (file_or_error.is_error()) {
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warnln("Failed to open {}: {}", path, file_or_error.error());
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VERIFY_NOT_REACHED();
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}
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auto file = file_or_error.release_value();
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auto output_path = "/tmp/output.txt";
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auto outfile_or_error = Core::File::open(output_path, Core::OpenMode::WriteOnly);
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auto outputfile = outfile_or_error.release_value();
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while (file->can_read_line()) {
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outputfile->write(file->read_line());
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outputfile->write("\n");
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}
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file->close();
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outputfile->close();
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// Open files again for comparison since otherwise read_all returns empty (even when not closing the file)
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file = Core::File::construct(path);
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if (!file->open(Core::OpenMode::ReadOnly))
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VERIFY_NOT_REACHED();
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outputfile = Core::File::construct(output_path);
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if (!outputfile->open(Core::OpenMode::ReadOnly))
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VERIFY_NOT_REACHED();
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auto inputData = file->read_all();
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auto outputData = outputfile->read_all();
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EXPECT(inputData.size() > 0);
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EXPECT_EQ(inputData.size(), outputData.size());
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// Compare char by char
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for (size_t i = 0; i < inputData.size(); i++) {
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EXPECT_EQ(inputData[i], outputData[i]);
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}
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}
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