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310 lines
9.8 KiB
310 lines
9.8 KiB
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkAutoMalloc.h"
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#include "SkRandom.h"
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#include "SkReader32.h"
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#include "SkWriter32.h"
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#include "Test.h"
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static void check_contents(skiatest::Reporter* reporter, const SkWriter32& writer,
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const void* expected, size_t size) {
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SkAutoSMalloc<256> storage(size);
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REPORTER_ASSERT(reporter, writer.bytesWritten() == size);
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writer.flatten(storage.get());
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REPORTER_ASSERT(reporter, !memcmp(storage.get(), expected, size));
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}
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static void test_reserve(skiatest::Reporter* reporter) {
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// There used to be a bug where we'd assert your first reservation had to
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// fit in external storage if you used it. This would crash in debug mode.
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uint8_t storage[4];
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SkWriter32 writer(storage, sizeof(storage));
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writer.reserve(40);
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}
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static void test_string_null(skiatest::Reporter* reporter) {
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uint8_t storage[8];
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SkWriter32 writer(storage, sizeof(storage));
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// Can we write nullptr?
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writer.writeString(nullptr);
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const int32_t expected[] = { 0x0, 0x0 };
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check_contents(reporter, writer, expected, sizeof(expected));
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}
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static void test_rewind(skiatest::Reporter* reporter) {
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SkSWriter32<32> writer;
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int32_t array[3] = { 1, 2, 4 };
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REPORTER_ASSERT(reporter, 0 == writer.bytesWritten());
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for (size_t i = 0; i < SK_ARRAY_COUNT(array); ++i) {
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writer.writeInt(array[i]);
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}
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check_contents(reporter, writer, array, sizeof(array));
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writer.rewindToOffset(2*sizeof(int32_t));
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REPORTER_ASSERT(reporter, sizeof(array) - 4 == writer.bytesWritten());
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writer.writeInt(3);
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REPORTER_ASSERT(reporter, sizeof(array) == writer.bytesWritten());
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array[2] = 3;
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check_contents(reporter, writer, array, sizeof(array));
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// test rewinding past allocated chunks. This used to crash because we
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// didn't truncate our link-list after freeing trailing blocks
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{
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SkWriter32 writer;
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for (int i = 0; i < 100; ++i) {
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writer.writeInt(i);
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}
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REPORTER_ASSERT(reporter, 100*4 == writer.bytesWritten());
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for (int j = 100*4; j >= 0; j -= 16) {
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writer.rewindToOffset(j);
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}
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REPORTER_ASSERT(reporter, writer.bytesWritten() < 16);
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}
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}
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static void test_ptr(skiatest::Reporter* reporter) {
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SkSWriter32<32> writer;
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void* p0 = reporter;
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void* p1 = &writer;
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// try writing ptrs where at least one of them may be at a non-multiple of
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// 8 boundary, to confirm this works on 64bit machines.
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writer.writePtr(p0);
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writer.write8(0x33);
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writer.writePtr(p1);
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writer.write8(0x66);
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size_t size = writer.bytesWritten();
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REPORTER_ASSERT(reporter, 2 * sizeof(void*) + 2 * sizeof(int32_t));
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char buffer[32];
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SkASSERT(sizeof(buffer) >= size);
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writer.flatten(buffer);
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SkReader32 reader(buffer, size);
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REPORTER_ASSERT(reporter, reader.readPtr() == p0);
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REPORTER_ASSERT(reporter, reader.readInt() == 0x33);
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REPORTER_ASSERT(reporter, reader.readPtr() == p1);
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REPORTER_ASSERT(reporter, reader.readInt() == 0x66);
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}
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static void test1(skiatest::Reporter* reporter, SkWriter32* writer) {
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const uint32_t data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
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for (size_t i = 0; i < SK_ARRAY_COUNT(data); ++i) {
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REPORTER_ASSERT(reporter, i*4 == writer->bytesWritten());
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writer->write32(data[i]);
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REPORTER_ASSERT(reporter, data[i] == writer->readTAt<uint32_t>(i * 4));
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}
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char buffer[sizeof(data)];
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REPORTER_ASSERT(reporter, sizeof(buffer) == writer->bytesWritten());
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writer->flatten(buffer);
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REPORTER_ASSERT(reporter, !memcmp(data, buffer, sizeof(buffer)));
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}
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static void test2(skiatest::Reporter* reporter, SkWriter32* writer) {
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static const char gStr[] = "abcdefghimjklmnopqrstuvwxyz";
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size_t i;
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size_t len = 0;
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for (i = 0; i <= 26; ++i) {
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len += SkWriter32::WriteStringSize(gStr, i);
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writer->writeString(gStr, i);
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}
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REPORTER_ASSERT(reporter, writer->bytesWritten() == len);
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SkAutoMalloc storage(len);
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writer->flatten(storage.get());
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SkReader32 reader;
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reader.setMemory(storage.get(), len);
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for (i = 0; i <= 26; ++i) {
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REPORTER_ASSERT(reporter, !reader.eof());
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const char* str = reader.readString(&len);
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REPORTER_ASSERT(reporter, i == len);
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REPORTER_ASSERT(reporter, strlen(str) == len);
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REPORTER_ASSERT(reporter, !memcmp(str, gStr, len));
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// Ensure that the align4 of the string is padded with zeroes.
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size_t alignedSize = SkAlign4(len + 1);
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for (size_t j = len; j < alignedSize; j++) {
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REPORTER_ASSERT(reporter, 0 == str[j]);
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}
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}
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REPORTER_ASSERT(reporter, reader.eof());
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}
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static void testWritePad(skiatest::Reporter* reporter, SkWriter32* writer) {
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// Create some random data to write.
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const size_t dataSize = 10;
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SkAutoTMalloc<uint32_t> originalData(dataSize);
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{
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SkRandom rand(0);
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for (size_t i = 0; i < dataSize; i++) {
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originalData[(int) i] = rand.nextU();
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}
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// Write the random data to the writer at different lengths for
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// different alignments.
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for (size_t len = 0; len < dataSize; len++) {
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writer->writePad(originalData.get(), len);
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}
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}
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size_t totalBytes = writer->bytesWritten();
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SkAutoMalloc readStorage(totalBytes);
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writer->flatten(readStorage.get());
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SkReader32 reader;
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reader.setMemory(readStorage.get(), totalBytes);
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for (size_t len = 0; len < dataSize; len++) {
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const char* readPtr = static_cast<const char*>(reader.skip(len));
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// Ensure that the data read is the same as what was written.
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REPORTER_ASSERT(reporter, memcmp(readPtr, originalData.get(), len) == 0);
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// Ensure that the rest is padded with zeroes.
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const char* stop = readPtr + SkAlign4(len);
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readPtr += len;
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while (readPtr < stop) {
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REPORTER_ASSERT(reporter, *readPtr++ == 0);
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}
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}
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}
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static void testOverwriteT(skiatest::Reporter* reporter, SkWriter32* writer) {
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const size_t padding = 64;
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const uint32_t uint1 = 0x12345678;
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const uint32_t uint2 = 0x98765432;
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const SkScalar scalar1 = 1234.5678f;
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const SkScalar scalar2 = 9876.5432f;
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const SkRect rect1 = SkRect::MakeXYWH(1, 2, 3, 4);
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const SkRect rect2 = SkRect::MakeXYWH(5, 6, 7, 8);
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for (size_t i = 0; i < (padding / 4); ++i) {
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writer->write32(0);
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}
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writer->write32(uint1);
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writer->writeRect(rect1);
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writer->writeScalar(scalar1);
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for (size_t i = 0; i < (padding / 4); ++i) {
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writer->write32(0);
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}
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REPORTER_ASSERT(reporter, writer->readTAt<uint32_t>(padding) == uint1);
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REPORTER_ASSERT(reporter, writer->readTAt<SkRect>(padding + sizeof(uint32_t)) == rect1);
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REPORTER_ASSERT(reporter, writer->readTAt<SkScalar>(
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padding + sizeof(uint32_t) + sizeof(SkRect)) == scalar1);
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writer->overwriteTAt(padding, uint2);
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writer->overwriteTAt(padding + sizeof(uint32_t), rect2);
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writer->overwriteTAt(padding + sizeof(uint32_t) + sizeof(SkRect), scalar2);
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REPORTER_ASSERT(reporter, writer->readTAt<uint32_t>(padding) == uint2);
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REPORTER_ASSERT(reporter, writer->readTAt<SkRect>(padding + sizeof(uint32_t)) == rect2);
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REPORTER_ASSERT(reporter, writer->readTAt<SkScalar>(
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padding + sizeof(uint32_t) + sizeof(SkRect)) == scalar2);
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}
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DEF_TEST(Writer32_dynamic, reporter) {
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SkWriter32 writer;
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test1(reporter, &writer);
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writer.reset();
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test2(reporter, &writer);
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writer.reset();
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testWritePad(reporter, &writer);
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writer.reset();
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testOverwriteT(reporter, &writer);
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}
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DEF_TEST(Writer32_small, reporter) {
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SkSWriter32<8 * sizeof(intptr_t)> writer;
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test1(reporter, &writer);
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writer.reset(); // should just rewind our storage
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test2(reporter, &writer);
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writer.reset();
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testWritePad(reporter, &writer);
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writer.reset();
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testOverwriteT(reporter, &writer);
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}
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DEF_TEST(Writer32_large, reporter) {
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SkSWriter32<1024 * sizeof(intptr_t)> writer;
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test1(reporter, &writer);
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writer.reset(); // should just rewind our storage
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test2(reporter, &writer);
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writer.reset();
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testWritePad(reporter, &writer);
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writer.reset();
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testOverwriteT(reporter, &writer);
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}
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DEF_TEST(Writer32_misc, reporter) {
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test_reserve(reporter);
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test_string_null(reporter);
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test_ptr(reporter);
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test_rewind(reporter);
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}
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DEF_TEST(Writer32_data, reporter) {
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const char* str = "0123456789";
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sk_sp<SkData> data0(SkData::MakeWithCString(str));
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sk_sp<SkData> data1(SkData::MakeEmpty());
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const size_t sizes[] = {
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SkWriter32::WriteDataSize(nullptr),
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SkWriter32::WriteDataSize(data0.get()),
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SkWriter32::WriteDataSize(data1.get()),
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};
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SkSWriter32<1000> writer;
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size_t sizeWritten = 0;
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writer.writeData(nullptr);
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sizeWritten += sizes[0];
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REPORTER_ASSERT(reporter, sizeWritten == writer.bytesWritten());
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writer.writeData(data0.get());
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sizeWritten += sizes[1];
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REPORTER_ASSERT(reporter, sizeWritten == writer.bytesWritten());
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writer.writeData(data1.get());
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sizeWritten += sizes[2];
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REPORTER_ASSERT(reporter, sizeWritten == writer.bytesWritten());
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auto result(writer.snapshotAsData());
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SkReader32 reader(result->data(), result->size());
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auto d0(reader.readData()),
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d1(reader.readData()),
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d2(reader.readData());
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REPORTER_ASSERT(reporter, 0 == d0->size());
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REPORTER_ASSERT(reporter, strlen(str)+1 == d1->size());
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REPORTER_ASSERT(reporter, !memcmp(str, d1->data(), strlen(str)+1));
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REPORTER_ASSERT(reporter, 0 == d2->size());
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REPORTER_ASSERT(reporter, reader.offset() == sizeWritten);
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REPORTER_ASSERT(reporter, reader.eof());
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}
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