C++ (Cpp) test_peeking_front_buffered_stream примеры использования

Пример #1

Файл: StreamTest.cpp Проект: nagyistoce/skia

DEF_TEST(StreamPeek, reporter) {
    // Test a memory stream.
    const char gAbcs[] = "abcdefghijklmnopqrstuvwxyz";
    SkMemoryStream memStream(gAbcs, strlen(gAbcs), false);
    test_peeking_stream(reporter, &memStream, memStream.getLength());

    // Test an arbitrary file stream. file streams do not support peeking.
    SkFILEStream fileStream(GetResourcePath("baby_tux.webp").c_str());
    REPORTER_ASSERT(reporter, fileStream.isValid());
    SkAutoMalloc storage(fileStream.getLength());
    for (size_t i = 1; i < fileStream.getLength(); i++) {
        REPORTER_ASSERT(reporter, !fileStream.peek(storage.get(), i));
    }

    // Now test some FrontBufferedStreams
    for (size_t i = 1; i < memStream.getLength(); i++) {
        test_peeking_front_buffered_stream(reporter, memStream, i);
    }
}

Пример #2

// This test uses file system operations that don't work out of the
// box on iOS. It's likely that we don't need them on iOS. Ignoring for now.
// TODO(stephana): Re-evaluate if we need this in the future.
DEF_TEST(StreamPeek, reporter) {
    // Test a memory stream.
    const char gAbcs[] = "abcdefghijklmnopqrstuvwxyz";
    SkMemoryStream memStream(gAbcs, strlen(gAbcs), false);
    test_fully_peekable_stream(reporter, &memStream, memStream.getLength());

    // Test an arbitrary file stream. file streams do not support peeking.
    auto tmpdir = skiatest::GetTmpDir();
    if (tmpdir.isEmpty()) {
        ERRORF(reporter, "no tmp dir!");
        return;
    }
    auto path = SkOSPath::Join(tmpdir.c_str(), "file");
    {
        SkFILEWStream wStream(path.c_str());
        constexpr char filename[] = "images/baby_tux.webp";
        auto data = GetResourceAsData(filename);
        if (!data || data->size() == 0) {
            ERRORF(reporter, "resource missing: %s\n", filename);
            return;
        }
        if (!wStream.isValid() || !wStream.write(data->data(), data->size())) {
            ERRORF(reporter, "error wrtiting to file %s", path.c_str());
            return;
        }
    }
    SkFILEStream fileStream(path.c_str());
    REPORTER_ASSERT(reporter, fileStream.isValid());
    if (!fileStream.isValid()) {
        return;
    }
    SkAutoMalloc storage(fileStream.getLength());
    for (size_t i = 1; i < fileStream.getLength(); i++) {
        REPORTER_ASSERT(reporter, fileStream.peek(storage.get(), i) == 0);
    }

    // Now test some FrontBufferedStreams
    for (size_t i = 1; i < memStream.getLength(); i++) {
        test_peeking_front_buffered_stream(reporter, memStream, i);
    }
}