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cdaa179eeb
The recently introduced read buffer in IODevice broke relative seeking. The amount of data in the buffer wouldn't get taken into account.
78 lines
2.4 KiB
C++
78 lines
2.4 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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TEST_CASE(file_get_read_position)
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{
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const String path = "10kb.txt";
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auto file = Core::File::open(path, Core::OpenMode::ReadOnly).release_value();
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const size_t step_size = 98;
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for (size_t i = 0; i < 10240 - step_size; i += step_size) {
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auto read_buffer = file->read(step_size);
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EXPECT_EQ(read_buffer.size(), step_size);
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for (size_t j = 0; j < read_buffer.size(); j++) {
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EXPECT_EQ(static_cast<u32>(read_buffer[j] - '0'), (i + j) % 10);
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}
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off_t offset = 0;
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VERIFY(file->seek(0, Core::SeekMode::FromCurrentPosition, &offset));
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EXPECT_EQ(offset, static_cast<off_t>(i + step_size));
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}
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{
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off_t offset = 0;
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VERIFY(file->seek(0, Core::SeekMode::FromEndPosition, &offset));
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EXPECT_EQ(offset, 10240);
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}
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{
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off_t offset = 0;
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VERIFY(file->seek(0, Core::SeekMode::SetPosition, &offset));
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EXPECT_EQ(offset, 0);
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}
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}
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