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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkFlate.h"
#include "SkRandom.h"
#include "Test.h"
DEF_TEST(SkDeflateWStream, r) {
SkRandom random(123456);
for (int i = 0; i < 50; ++i) {
uint32_t size = random.nextULessThan(10000);
SkAutoTMalloc<uint8_t> buffer(size);
for (uint32_t j = 0; j < size; ++j) {
buffer[j] = random.nextU() & 0xff;
}
SkDynamicMemoryWStream dynamicMemoryWStream;
{
SkDeflateWStream deflateWStream(&dynamicMemoryWStream);
uint32_t j = 0;
while (j < size) {
uint32_t writeSize =
SkTMin(size - j, random.nextRangeU(1, 400));
if (!deflateWStream.write(&buffer[j], writeSize)) {
ERRORF(r, "something went wrong.");
return;
}
j += writeSize;
}
}
SkAutoTDelete<SkStreamAsset> compressed(
dynamicMemoryWStream.detachAsStream());
SkDynamicMemoryWStream decompressedDynamicMemoryWStream;
SkAssertResult(SkFlate::Inflate(compressed,
&decompressedDynamicMemoryWStream));
SkAutoTDelete<SkStreamAsset> decompressed(
decompressedDynamicMemoryWStream.detachAsStream());
if (decompressed->getLength() != size) {
ERRORF(r, "Decompression failed to get right size [%d]."
" %u != %u", i, (unsigned)(decompressed->getLength()),
(unsigned)size);
SkString s = SkStringPrintf("/tmp/deftst_compressed_%d", i);
SkFILEWStream o(s.c_str());
o.writeStream(compressed.get(), compressed->getLength());
compressed->rewind();
s = SkStringPrintf("/tmp/deftst_input_%d", i);
SkFILEWStream o2(s.c_str());
o2.write(&buffer[0], size);
continue;
}
uint32_t minLength = SkTMin(size,
(uint32_t)(decompressed->getLength()));
for (uint32_t i = 0; i < minLength; ++i) {
uint8_t c;
SkDEBUGCODE(size_t rb =)decompressed->read(&c, sizeof(uint8_t));
SkASSERT(sizeof(uint8_t) == rb);
if (buffer[i] != c) {
ERRORF(r, "Decompression failed at byte %u.", (unsigned)i);
break;
}
}
}
}
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