static void test_peeking_front_buffered_stream(skiatest::Reporter* r,
const SkStream& original,
size_t bufferSize) {
SkStream* dupe = original.duplicate();
REPORTER_ASSERT(r, dupe != NULL);
SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(dupe, bufferSize));
REPORTER_ASSERT(r, bufferedStream != NULL);
test_peeking_stream(r, bufferedStream, bufferSize);
}
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);
}
}
