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/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include "gtest/gtest.h"
#include "sfntly/data/memory_byte_array.h"
#include "sfntly/data/growable_memory_byte_array.h"
namespace sfntly {
namespace byte_array_test {
const int32_t BYTE_ARRAY_SIZES[] =
{1, 7, 127, 128, 129, 255, 256, 257, 666, 1023, 10000, 0xffff, 0x10000};
void FillTestByteArray(ByteArray* ba, int32_t size) {
for (int32_t i = 0; i < size; ++i) {
ba->Put(i, (uint8_t)(i % 256));
}
}
void ReadByteArrayWithBuffer(ByteArray* ba, ByteVector* buffer, ByteVector* b) {
b->resize(ba->Length());
int32_t index = 0;
while (index < ba->Length()) {
int32_t bytes_read = ba->Get(index, buffer);
std::copy(buffer->begin(), buffer->begin() + bytes_read,
b->begin() + index);
index += bytes_read;
}
}
void ReadByteArrayWithSlidingWindow(ByteArray* ba, int window_size,
ByteVector* b) {
b->resize(ba->Length());
int32_t index = 0;
int32_t actual_window_size = window_size;
while (index < ba->Length()) {
actual_window_size =
std::min<int32_t>(actual_window_size, b->size() - index);
int32_t bytes_read = ba->Get(index, &((*b)[0]), index, actual_window_size);
index += bytes_read;
}
}
bool ReadComparison(ByteArray* ba1, ByteArray* ba2) {
// single byte reads
for (int i = 0; i < ba1->Length(); ++i) {
EXPECT_EQ(ba1->Get(i), ba2->Get(i));
}
ByteVector b1, b2;
// buffer reads
int increments = std::max<int32_t>(ba1->Length() / 11, 1);
for (int buffer_size = 1; buffer_size < ba1->Length();
buffer_size += increments) {
ByteVector buffer(buffer_size);
ReadByteArrayWithBuffer(ba1, &buffer, &b1);
ReadByteArrayWithBuffer(ba2, &buffer, &b2);
EXPECT_GT(b1.size(), static_cast<size_t>(0));
EXPECT_EQ(b1.size(), b2.size());
EXPECT_TRUE(std::equal(b1.begin(), b1.end(), b2.begin()));
}
// sliding window reads
b1.clear();
b2.clear();
for (int window_size = 1; window_size < ba1->Length();
window_size += increments) {
ReadByteArrayWithSlidingWindow(ba1, window_size, &b1);
ReadByteArrayWithSlidingWindow(ba2, window_size, &b2);
EXPECT_GT(b1.size(), static_cast<size_t>(0));
EXPECT_EQ(b1.size(), b2.size());
EXPECT_TRUE(std::equal(b1.begin(), b1.end(), b2.begin()));
}
return true;
}
bool CopyTest(ByteArray* ba) {
ByteArrayPtr fixed_copy = new MemoryByteArray(ba->Length());
ba->CopyTo(fixed_copy);
EXPECT_EQ(ba->Length(), fixed_copy->Length());
EXPECT_TRUE(ReadComparison(ba, fixed_copy));
ByteArrayPtr growable_copy = new GrowableMemoryByteArray();
ba->CopyTo(growable_copy);
EXPECT_EQ(ba->Length(), growable_copy->Length());
EXPECT_TRUE(ReadComparison(ba, growable_copy));
return true;
}
bool ByteArrayTester(ByteArray* ba) {
return CopyTest(ba);
}
} // namespace byte_array_test
bool TestMemoryByteArray() {
fprintf(stderr, "fixed mem: size ");
for (size_t i = 0;
i < sizeof(byte_array_test::BYTE_ARRAY_SIZES) / sizeof(int32_t); ++i) {
int32_t size = byte_array_test::BYTE_ARRAY_SIZES[i];
fprintf(stderr, "%d ", size);
ByteArrayPtr ba = new MemoryByteArray(size);
byte_array_test::FillTestByteArray(ba, size);
EXPECT_TRUE(byte_array_test::ByteArrayTester(ba));
}
fprintf(stderr, "\n");
return true;
}
bool TestGrowableMemoryByteArray() {
fprintf(stderr, "growable mem: size ");
for (size_t i = 0;
i < sizeof(byte_array_test::BYTE_ARRAY_SIZES) / sizeof(int32_t); ++i) {
int32_t size = byte_array_test::BYTE_ARRAY_SIZES[i];
fprintf(stderr, "%d ", size);
ByteArrayPtr ba = new GrowableMemoryByteArray();
byte_array_test::FillTestByteArray(ba, size);
EXPECT_TRUE(byte_array_test::ByteArrayTester(ba));
}
fprintf(stderr, "\n");
return true;
}
} // namespace sfntly
TEST(ByteArray, All) {
ASSERT_TRUE(sfntly::TestMemoryByteArray());
ASSERT_TRUE(sfntly::TestGrowableMemoryByteArray());
}
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