skia2/tests/StreamTest.cpp

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Automatic update of all copyright notices to reflect new license terms. I have manually examined all of these diffs and restored a few files that seem to require manual adjustment. The following files still need to be modified manually, in a separate CL: android_sample/SampleApp/AndroidManifest.xml android_sample/SampleApp/res/layout/layout.xml android_sample/SampleApp/res/menu/sample.xml android_sample/SampleApp/res/values/strings.xml android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java experimental/CiCarbonSampleMain.c experimental/CocoaDebugger/main.m experimental/FileReaderApp/main.m experimental/SimpleCocoaApp/main.m experimental/iOSSampleApp/Shared/SkAlertPrompt.h experimental/iOSSampleApp/Shared/SkAlertPrompt.m experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig gpu/src/android/GrGLDefaultInterface_android.cpp gyp/common.gypi gyp_skia include/ports/SkHarfBuzzFont.h include/views/SkOSWindow_wxwidgets.h make.bat make.py src/opts/memset.arm.S src/opts/memset16_neon.S src/opts/memset32_neon.S src/opts/opts_check_arm.cpp src/ports/SkDebug_brew.cpp src/ports/SkMemory_brew.cpp src/ports/SkOSFile_brew.cpp src/ports/SkXMLParser_empty.cpp src/utils/ios/SkImageDecoder_iOS.mm src/utils/ios/SkOSFile_iOS.mm src/utils/ios/SkStream_NSData.mm tests/FillPathTest.cpp Review URL: http://codereview.appspot.com/4816058 git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Resources.h"
#include "SkData.h"
#include "SkFrontBufferedStream.h"
#include "SkOSFile.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "SkStreamPriv.h"
#include "Test.h"
#ifndef SK_BUILD_FOR_WIN
#include <unistd.h>
#include <fcntl.h>
#endif
#define MAX_SIZE (256 * 1024)
static void test_loop_stream(skiatest::Reporter* reporter, SkStream* stream,
const void* src, size_t len, int repeat) {
SkAutoSMalloc<256> storage(len);
void* tmp = storage.get();
for (int i = 0; i < repeat; ++i) {
size_t bytes = stream->read(tmp, len);
REPORTER_ASSERT(reporter, bytes == len);
REPORTER_ASSERT(reporter, !memcmp(tmp, src, len));
}
// expect EOF
size_t bytes = stream->read(tmp, 1);
REPORTER_ASSERT(reporter, 0 == bytes);
// isAtEnd might not return true until after the first failing read.
REPORTER_ASSERT(reporter, stream->isAtEnd());
}
static void test_filestreams(skiatest::Reporter* reporter, const char* tmpDir) {
SkString path = SkOSPath::Join(tmpDir, "wstream_test");
const char s[] = "abcdefghijklmnopqrstuvwxyz";
{
SkFILEWStream writer(path.c_str());
if (!writer.isValid()) {
ERRORF(reporter, "Failed to create tmp file %s\n", path.c_str());
return;
}
for (int i = 0; i < 100; ++i) {
writer.write(s, 26);
}
}
{
SkFILEStream stream(path.c_str());
REPORTER_ASSERT(reporter, stream.isValid());
test_loop_stream(reporter, &stream, s, 26, 100);
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream2(stream.duplicate());
test_loop_stream(reporter, stream2.get(), s, 26, 100);
}
{
FILE* file = ::fopen(path.c_str(), "rb");
SkFILEStream stream(file, SkFILEStream::kCallerPasses_Ownership);
REPORTER_ASSERT(reporter, stream.isValid());
test_loop_stream(reporter, &stream, s, 26, 100);
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream2(stream.duplicate());
test_loop_stream(reporter, stream2.get(), s, 26, 100);
}
}
static void TestWStream(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream ds;
const char s[] = "abcdefghijklmnopqrstuvwxyz";
int i;
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, ds.write(s, 26));
}
REPORTER_ASSERT(reporter, ds.getOffset() == 100 * 26);
char* dst = new char[100 * 26 + 1];
dst[100*26] = '*';
ds.copyTo(dst);
REPORTER_ASSERT(reporter, dst[100*26] == '*');
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, memcmp(&dst[i * 26], s, 26) == 0);
}
{
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream(ds.detachAsStream());
REPORTER_ASSERT(reporter, 100 * 26 == stream->getLength());
REPORTER_ASSERT(reporter, ds.getOffset() == 0);
test_loop_stream(reporter, stream.get(), s, 26, 100);
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream2(stream->duplicate());
test_loop_stream(reporter, stream2.get(), s, 26, 100);
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream3(stream->fork());
REPORTER_ASSERT(reporter, stream3->isAtEnd());
char tmp;
size_t bytes = stream->read(&tmp, 1);
REPORTER_ASSERT(reporter, 0 == bytes);
stream3->rewind();
test_loop_stream(reporter, stream3.get(), s, 26, 100);
}
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, ds.write(s, 26));
}
REPORTER_ASSERT(reporter, ds.getOffset() == 100 * 26);
{
SkAutoTUnref<SkData> data(ds.copyToData());
REPORTER_ASSERT(reporter, 100 * 26 == data->size());
REPORTER_ASSERT(reporter, memcmp(dst, data->data(), data->size()) == 0);
}
{
// Test that this works after a copyToData.
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream(ds.detachAsStream());
REPORTER_ASSERT(reporter, ds.getOffset() == 0);
test_loop_stream(reporter, stream.get(), s, 26, 100);
Make SkStream *not* ref counted. SkStream is a stateful object, so it does not make sense for it to have multiple owners. Make SkStream inherit directly from SkNoncopyable. Update methods which previously called SkStream::ref() (e.g. SkImageDecoder::buildTileIndex() and SkFrontBufferedStream::Create(), which required the existing owners to call SkStream::unref()) to take ownership of their SkStream parameters and delete when done (including on failure). Switch all SkAutoTUnref<SkStream>s to SkAutoTDelete<SkStream>s. In some cases this means heap allocating streams that were previously stack allocated. Respect ownership rules of SkTypeface::CreateFromStream() and SkImageDecoder::buildTileIndex(). Update the comments for exceptional methods which do not affect the ownership of their SkStream parameters (e.g. SkPicture::CreateFromStream() and SkTypeface::Deserialize()) to be explicit about ownership. Remove test_stream_life, which tested that buildTileIndex() behaved correctly when SkStream was a ref counted object. The test does not make sense now that it is not. In SkPDFStream, remove the SkMemoryStream member. Instead of using it, create a new SkMemoryStream to pass to fDataStream (which is now an SkAutoTDelete). Make other pdf rasterizers behave like SkPDFDocumentToBitmap. SkPDFDocumentToBitmap delete the SkStream, so do the same in the following pdf rasterizers: SkPopplerRasterizePDF SkNativeRasterizePDF SkNoRasterizePDF Requires a change to Android, which currently treats SkStreams as ref counted objects. Review URL: https://codereview.chromium.org/849103004
2015-01-21 20:09:53 +00:00
SkAutoTDelete<SkStreamAsset> stream2(stream->duplicate());
test_loop_stream(reporter, stream2.get(), s, 26, 100);
}
delete[] dst;
SkString tmpDir = skiatest::GetTmpDir();
if (!tmpDir.isEmpty()) {
test_filestreams(reporter, tmpDir.c_str());
}
}
static void TestPackedUInt(skiatest::Reporter* reporter) {
// we know that packeduint tries to write 1, 2 or 4 bytes for the length,
// so we test values around each of those transitions (and a few others)
const size_t sizes[] = {
0, 1, 2, 0xFC, 0xFD, 0xFE, 0xFF, 0x100, 0x101, 32767, 32768, 32769,
0xFFFD, 0xFFFE, 0xFFFF, 0x10000, 0x10001,
0xFFFFFD, 0xFFFFFE, 0xFFFFFF, 0x1000000, 0x1000001,
0x7FFFFFFE, 0x7FFFFFFF, 0x80000000, 0x80000001, 0xFFFFFFFE, 0xFFFFFFFF
};
size_t i;
char buffer[sizeof(sizes) * 4];
SkMemoryWStream wstream(buffer, sizeof(buffer));
for (i = 0; i < SK_ARRAY_COUNT(sizes); ++i) {
bool success = wstream.writePackedUInt(sizes[i]);
REPORTER_ASSERT(reporter, success);
}
wstream.flush();
SkMemoryStream rstream(buffer, sizeof(buffer));
for (i = 0; i < SK_ARRAY_COUNT(sizes); ++i) {
size_t n = rstream.readPackedUInt();
if (sizes[i] != n) {
ERRORF(reporter, "sizes:%x != n:%x\n", i, sizes[i], n);
}
}
}
// Test that setting an SkMemoryStream to a nullptr data does not result in a crash when calling
// methods that access fData.
static void TestDereferencingData(SkMemoryStream* memStream) {
memStream->read(nullptr, 0);
memStream->getMemoryBase();
SkAutoDataUnref data(memStream->copyToData());
}
static void TestNullData() {
SkData* nullData = nullptr;
SkMemoryStream memStream(nullData);
TestDereferencingData(&memStream);
memStream.setData(nullData);
TestDereferencingData(&memStream);
}
DEF_TEST(Stream, reporter) {
TestWStream(reporter);
TestPackedUInt(reporter);
TestNullData();
}
/**
* Tests peeking and then reading the same amount. The two should provide the
* same results.
* Returns the amount successfully read minus the amount successfully peeked.
*/
static size_t compare_peek_to_read(skiatest::Reporter* reporter,
SkStream* stream, size_t bytesToPeek) {
// The rest of our tests won't be very interesting if bytesToPeek is zero.
REPORTER_ASSERT(reporter, bytesToPeek > 0);
SkAutoMalloc peekStorage(bytesToPeek);
SkAutoMalloc readStorage(bytesToPeek);
void* peekPtr = peekStorage.get();
void* readPtr = peekStorage.get();
const size_t bytesPeeked = stream->peek(peekPtr, bytesToPeek);
const size_t bytesRead = stream->read(readPtr, bytesToPeek);
// bytesRead should only be less than attempted if the stream is at the
// end.
REPORTER_ASSERT(reporter, bytesRead == bytesToPeek || stream->isAtEnd());
// peek and read should behave the same, except peek returned to the
// original position, so they read the same data.
REPORTER_ASSERT(reporter, !memcmp(peekPtr, readPtr, bytesPeeked));
// A stream should never be able to peek more than it can read.
REPORTER_ASSERT(reporter, bytesRead >= bytesPeeked);
return bytesRead - bytesPeeked;
}
static void test_fully_peekable_stream(skiatest::Reporter* r, SkStream* stream, size_t limit) {
for (size_t i = 1; !stream->isAtEnd(); i++) {
REPORTER_ASSERT(r, compare_peek_to_read(r, stream, i) == 0);
}
}
static void test_peeking_front_buffered_stream(skiatest::Reporter* r,
const SkStream& original,
size_t bufferSize) {
SkStream* dupe = original.duplicate();
REPORTER_ASSERT(r, dupe != nullptr);
SkAutoTDelete<SkStream> bufferedStream(SkFrontBufferedStream::Create(dupe, bufferSize));
REPORTER_ASSERT(r, bufferedStream != nullptr);
size_t peeked = 0;
for (size_t i = 1; !bufferedStream->isAtEnd(); i++) {
const size_t unpeekableBytes = compare_peek_to_read(r, bufferedStream, i);
if (unpeekableBytes > 0) {
// This could not have returned a number greater than i.
REPORTER_ASSERT(r, unpeekableBytes <= i);
// We have reached the end of the buffer. Verify that it was at least
// bufferSize.
REPORTER_ASSERT(r, peeked + i - unpeekableBytes >= bufferSize);
// No more peeking is supported.
break;
}
peeked += i;
}
// Test that attempting to peek beyond the length of the buffer does not prevent rewinding.
bufferedStream.reset(SkFrontBufferedStream::Create(original.duplicate(), bufferSize));
REPORTER_ASSERT(r, bufferedStream != nullptr);
const size_t bytesToPeek = bufferSize + 1;
SkAutoMalloc peekStorage(bytesToPeek);
SkAutoMalloc readStorage(bytesToPeek);
for (size_t start = 0; start <= bufferSize; start++) {
// Skip to the starting point
REPORTER_ASSERT(r, bufferedStream->skip(start) == start);
const size_t bytesPeeked = bufferedStream->peek(peekStorage.get(), bytesToPeek);
if (0 == bytesPeeked) {
// Peeking should only fail completely if we have read/skipped beyond the buffer.
REPORTER_ASSERT(r, start >= bufferSize);
break;
}
// Only read the amount that was successfully peeked.
const size_t bytesRead = bufferedStream->read(readStorage.get(), bytesPeeked);
REPORTER_ASSERT(r, bytesRead == bytesPeeked);
REPORTER_ASSERT(r, !memcmp(peekStorage.get(), readStorage.get(), bytesPeeked));
// This should be safe to rewind.
REPORTER_ASSERT(r, bufferedStream->rewind());
}
}
// 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.
#ifndef SK_BUILD_FOR_IOS
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.
SkFILEStream fileStream(GetResourcePath("baby_tux.webp").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);
}
}
#endif
// Asserts that asset == expected and is peekable.
static void stream_peek_test(skiatest::Reporter* rep,
SkStreamAsset* asset,
const SkData* expected) {
if (asset->getLength() != expected->size()) {
ERRORF(rep, "Unexpected length.");
return;
}
SkRandom rand;
uint8_t buffer[4096];
const uint8_t* expect = expected->bytes();
for (size_t i = 0; i < asset->getLength(); ++i) {
uint32_t maxSize =
SkToU32(SkTMin(sizeof(buffer), asset->getLength() - i));
size_t size = rand.nextRangeU(1, maxSize);
SkASSERT(size >= 1);
SkASSERT(size <= sizeof(buffer));
SkASSERT(size + i <= asset->getLength());
if (asset->peek(buffer, size) < size) {
ERRORF(rep, "Peek Failed!");
return;
}
if (0 != memcmp(buffer, &expect[i], size)) {
ERRORF(rep, "Peek returned wrong bytes!");
return;
}
uint8_t value;
REPORTER_ASSERT(rep, 1 == asset->read(&value, 1));
if (value != expect[i]) {
ERRORF(rep, "Read Failed!");
return;
}
}
}
DEF_TEST(StreamPeek_BlockMemoryStream, rep) {
const static int kSeed = 1234;
SkRandom valueSource(kSeed);
SkRandom rand(kSeed << 1);
uint8_t buffer[4096];
SkDynamicMemoryWStream dynamicMemoryWStream;
for (int i = 0; i < 32; ++i) {
// Randomize the length of the blocks.
size_t size = rand.nextRangeU(1, sizeof(buffer));
for (size_t j = 0; j < size; ++j) {
buffer[j] = valueSource.nextU() & 0xFF;
}
dynamicMemoryWStream.write(buffer, size);
}
SkAutoTDelete<SkStreamAsset> asset(dynamicMemoryWStream.detachAsStream());
SkAutoTUnref<SkData> expected(SkData::NewUninitialized(asset->getLength()));
uint8_t* expectedPtr = static_cast<uint8_t*>(expected->writable_data());
valueSource.setSeed(kSeed); // reseed.
// We want the exact same same "random" string of numbers to put
// in expected. i.e.: don't rely on SkDynamicMemoryStream to work
// correctly while we are testing SkDynamicMemoryStream.
for (size_t i = 0; i < asset->getLength(); ++i) {
expectedPtr[i] = valueSource.nextU() & 0xFF;
}
stream_peek_test(rep, asset, expected);
}
namespace {
class DumbStream : public SkStream {
public:
DumbStream(const uint8_t* data, size_t n)
: fData(data), fCount(n), fIdx(0) {}
size_t read(void* buffer, size_t size) override {
size_t copyCount = SkTMin(fCount - fIdx, size);
if (copyCount) {
memcpy(buffer, &fData[fIdx], copyCount);
fIdx += copyCount;
}
return copyCount;
}
bool isAtEnd() const override {
return fCount == fIdx;
}
private:
const uint8_t* fData;
size_t fCount, fIdx;
};
} // namespace
static void stream_copy_test(skiatest::Reporter* reporter,
const void* srcData,
size_t N,
SkStream* stream) {
SkDynamicMemoryWStream tgt;
if (!SkStreamCopy(&tgt, stream)) {
ERRORF(reporter, "SkStreamCopy failed");
return;
}
SkAutoTUnref<SkData> data(tgt.copyToData());
tgt.reset();
if (data->size() != N) {
ERRORF(reporter, "SkStreamCopy incorrect size");
return;
}
if (0 != memcmp(data->data(), srcData, N)) {
ERRORF(reporter, "SkStreamCopy bad copy");
}
}
DEF_TEST(StreamCopy, reporter) {
SkRandom random(123456);
static const int N = 10000;
SkAutoTMalloc<uint8_t> src((size_t)N);
for (int j = 0; j < N; ++j) {
src[j] = random.nextU() & 0xff;
}
// SkStreamCopy had two code paths; this test both.
DumbStream dumbStream(src.get(), (size_t)N);
stream_copy_test(reporter, src, N, &dumbStream);
SkMemoryStream smartStream(src.get(), (size_t)N);
stream_copy_test(reporter, src, N, &smartStream);
}
DEF_TEST(StreamEmptyStreamMemoryBase, r) {
SkDynamicMemoryWStream tmp;
SkAutoTDelete<SkStreamAsset> asset(tmp.detachAsStream());
REPORTER_ASSERT(r, nullptr == asset->getMemoryBase());
}