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