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PackerTest.cc
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/* Copyright (c) 2016-2018 Stanford University
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR(S) DISCLAIM ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL AUTHORS BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <cassert>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include "TestUtil.h"
#include "Packer.h"
#include "gtest/gtest.h"
using namespace std;
using namespace BufferUtils;
namespace {
// The fixture for testing class Foo.
class PackerTest : public ::testing::Test {
protected:
// You can remove any or all of the following functions if its body
// is empty.
PackerTest()
: testFile("packerTestFile.bin")
, buffer_space()
, buffer(buffer_space)
{
// You can do set-up work for each test here.
}
virtual ~PackerTest() {
// You can do clean-up work that doesn't throw exceptions here.
}
// If the constructor and destructor are not enough for setting up
// and cleaning up each test, you can define the following methods:
virtual void SetUp() {
// Code here will be called immediately after the constructor (right
// before each test).
}
virtual void TearDown() {
// Code here will be called immediately after each test (right
// before the destructor).
std::remove(testFile);
}
// Objects declared here can be used by all tests in the test case for Foo.
const char *testFile;
char buffer_space[10000];
char *buffer = buffer_space;
};
TEST_F(PackerTest, packUnsignedIntegers)
{
// Only test pack's ability to identify the min # of bytes required
// and advances the buffer appropriately. Verification of the data
// comes in the unpack test.
char *buffer = buffer_space;
EXPECT_EQ(1, pack(&buffer, uint8_t(0)));
EXPECT_EQ(1, pack(&buffer, uint16_t(0)));
EXPECT_EQ(1, pack(&buffer, uint32_t(0)));
EXPECT_EQ(1, pack(&buffer, uint64_t(0)));
EXPECT_EQ(buffer_space + 4, buffer);
EXPECT_EQ(1, pack(&buffer, uint8_t(1)));
EXPECT_EQ(1, pack(&buffer, uint16_t(1)));
EXPECT_EQ(1, pack(&buffer, uint32_t(1)));
EXPECT_EQ(1, pack(&buffer, uint64_t(1)));
EXPECT_EQ(buffer_space + 8, buffer);
EXPECT_EQ(1, pack(&buffer, uint8_t(255)));
EXPECT_EQ(1, pack(&buffer, uint16_t(255)));
EXPECT_EQ(1, pack(&buffer, uint32_t(255)));
EXPECT_EQ(1, pack(&buffer, uint64_t(255)));
EXPECT_EQ(buffer_space + 12, buffer);
EXPECT_EQ(2, pack(&buffer, uint16_t(1 << 8)));
EXPECT_EQ(2, pack(&buffer, uint32_t(1 << 8)));
EXPECT_EQ(2, pack(&buffer, uint64_t(1 << 8)));
EXPECT_EQ(buffer_space + 18, buffer);
EXPECT_EQ(2, pack(&buffer, uint16_t(1 << 16 - 1)));
EXPECT_EQ(2, pack(&buffer, uint32_t(1 << 16 - 1)));
EXPECT_EQ(2, pack(&buffer, uint64_t(1 << 16 - 1)));
EXPECT_EQ(buffer_space + 24, buffer);
EXPECT_EQ(3, pack(&buffer, uint32_t(1 << 16)));
EXPECT_EQ(3, pack(&buffer, uint64_t(1 << 16)));
EXPECT_EQ(buffer_space + 30, buffer);
EXPECT_EQ(3, pack(&buffer, uint32_t(1 << 24 - 1)));
EXPECT_EQ(3, pack(&buffer, uint64_t(1 << 24 - 1)));
EXPECT_EQ(buffer_space + 36, buffer);
EXPECT_EQ(4, pack(&buffer, uint32_t(1 << 24)));
EXPECT_EQ(4, pack(&buffer, uint64_t(1 << 24)));
EXPECT_EQ(buffer_space + 44, buffer);
EXPECT_EQ(4, pack(&buffer, uint32_t(1ULL << 32 - 1)));
EXPECT_EQ(4, pack(&buffer, uint64_t(1ULL << 32 - 1)));
EXPECT_EQ(buffer_space + 52, buffer);
EXPECT_EQ(5, pack(&buffer, uint64_t(1ULL << 32)));
EXPECT_EQ(5, pack(&buffer, uint64_t(1ULL << 40 - 1)));
EXPECT_EQ(buffer_space + 62, buffer);
EXPECT_EQ(6, pack(&buffer, uint64_t(1ULL << 40)));
EXPECT_EQ(6, pack(&buffer, uint64_t(1ULL << 48 - 1)));
EXPECT_EQ(buffer_space + 74, buffer);
EXPECT_EQ(7, pack(&buffer, uint64_t(1ULL << 48)));
EXPECT_EQ(7, pack(&buffer, uint64_t(1ULL << 56 -1)));
EXPECT_EQ(buffer_space + 88, buffer);
EXPECT_EQ(8, pack(&buffer, uint64_t(1ULL << 56)));
EXPECT_EQ(8, pack(&buffer, uint64_t(1ULL << 64 - 1)));
EXPECT_EQ(buffer_space + 104, buffer);
}
TEST_F(PackerTest, packSignedIntegers) {
char *buffer = buffer_space;
EXPECT_EQ(1, pack(&buffer, int8_t(0)));
EXPECT_EQ(1, pack(&buffer, int16_t(0)));
EXPECT_EQ(1, pack(&buffer, int32_t(0)));
EXPECT_EQ(1, pack(&buffer, int64_t(0)));
EXPECT_EQ(buffer_space + 4, buffer);
EXPECT_EQ(1, pack(&buffer, int8_t(1)));
EXPECT_EQ(1, pack(&buffer, int16_t(1)));
EXPECT_EQ(1, pack(&buffer, int32_t(1)));
EXPECT_EQ(1, pack(&buffer, int64_t(1)));
EXPECT_EQ(buffer_space + 8, buffer);
EXPECT_EQ(1 + 8, pack(&buffer, int8_t(-1)));
EXPECT_EQ(1 + 8, pack(&buffer, int16_t(-1)));
EXPECT_EQ(1 + 8, pack(&buffer, int32_t(-1)));
EXPECT_EQ(1 + 8, pack(&buffer, int64_t(-1)));
EXPECT_EQ(buffer_space + 12, buffer);
EXPECT_EQ(1, pack(&buffer, int8_t(127)));
EXPECT_EQ(1, pack(&buffer, int16_t(127)));
EXPECT_EQ(1, pack(&buffer, int32_t(127)));
EXPECT_EQ(1, pack(&buffer, int64_t(127)));
EXPECT_EQ(buffer_space + 16, buffer);
EXPECT_EQ(1 + 8, pack(&buffer, int8_t(128)));
EXPECT_EQ(1, pack(&buffer, int16_t(128)));
EXPECT_EQ(1, pack(&buffer, int32_t(128)));
EXPECT_EQ(1, pack(&buffer, int64_t(128)));
EXPECT_EQ(buffer_space + 20, buffer);
EXPECT_EQ(1 + 8, pack(&buffer, int8_t(-128)));
EXPECT_EQ(1 + 8, pack(&buffer, int16_t(-128)));
EXPECT_EQ(1 + 8, pack(&buffer, int32_t(-128)));
EXPECT_EQ(1 + 8, pack(&buffer, int64_t(-128)));
EXPECT_EQ(buffer_space + 24, buffer);
EXPECT_EQ(1 + 8, pack(&buffer, int8_t(255)));
EXPECT_EQ(1, pack(&buffer, int16_t(255)));
EXPECT_EQ(1, pack(&buffer, int32_t(255)));
EXPECT_EQ(1, pack(&buffer, int64_t(255)));
EXPECT_EQ(buffer_space + 28, buffer);
EXPECT_EQ(1, pack(&buffer, int8_t(-255)));
EXPECT_EQ(1 + 8, pack(&buffer, int16_t(-255)));
EXPECT_EQ(1 + 8, pack(&buffer, int32_t(-255)));
EXPECT_EQ(1 + 8, pack(&buffer, int64_t(-255)));
EXPECT_EQ(buffer_space + 32, buffer);
EXPECT_EQ(1, pack(&buffer, int8_t(1 << 8)));
EXPECT_EQ(buffer_space + 33, buffer);
EXPECT_EQ(2, pack(&buffer, int16_t(1 << 8)));
EXPECT_EQ(2, pack(&buffer, int32_t(1 << 8)));
EXPECT_EQ(2, pack(&buffer, int64_t(1 << 8)));
EXPECT_EQ(buffer_space + 39, buffer);
EXPECT_EQ(1, pack(&buffer, -int8_t(1 << 8)));
EXPECT_EQ(2 + 8, pack(&buffer, -int16_t(1 << 8)));
EXPECT_EQ(2 + 8, pack(&buffer, -int32_t(1 << 8)));
EXPECT_EQ(2 + 8, pack(&buffer, -int64_t(1 << 8)));
EXPECT_EQ(buffer_space + 46, buffer);
EXPECT_EQ(2 + 8, pack(&buffer, int16_t(1 << 16 - 1)));
EXPECT_EQ(2, pack(&buffer, int32_t(1 << 16 - 1)));
EXPECT_EQ(2, pack(&buffer, int64_t(1 << 16 - 1)));
EXPECT_EQ(buffer_space + 52, buffer);
EXPECT_EQ(2 + 8, pack(&buffer, -int32_t(1 << 16 - 1)));
EXPECT_EQ(2 + 8, pack(&buffer, -int64_t(1 << 16 - 1)));
EXPECT_EQ(buffer_space + 56, buffer);
EXPECT_EQ(3, pack(&buffer, int32_t(1 << 16)));
EXPECT_EQ(3, pack(&buffer, int64_t(1 << 16)));
EXPECT_EQ(buffer_space + 62, buffer);
EXPECT_EQ(3 + 8, pack(&buffer, -int32_t(1 << 16)));
EXPECT_EQ(3 + 8, pack(&buffer, -int64_t(1 << 16)));
EXPECT_EQ(buffer_space + 68, buffer);
EXPECT_EQ(3, pack(&buffer, int32_t(1 << 24 - 1)));
EXPECT_EQ(3, pack(&buffer, int64_t(1 << 24 - 1)));
EXPECT_EQ(buffer_space + 74, buffer);
EXPECT_EQ(4, pack(&buffer, int32_t(1 << 24)));
EXPECT_EQ(4, pack(&buffer, uint64_t(1 << 24)));
EXPECT_EQ(buffer_space + 82, buffer);
EXPECT_EQ(4, pack(&buffer, -int32_t(1 << 24)));
EXPECT_EQ(4 + 8, pack(&buffer, -int64_t(1 << 24)));
EXPECT_EQ(buffer_space + 90, buffer);
EXPECT_EQ(4, pack(&buffer, int32_t(1LL << 32 - 1)));
EXPECT_EQ(4, pack(&buffer, int64_t(1LL << 32 - 1)));
EXPECT_EQ(buffer_space + 98, buffer);
EXPECT_EQ(4 + 8, pack(&buffer, -int64_t(1ULL << 32 - 1)));
EXPECT_EQ(buffer_space + 102, buffer);
EXPECT_EQ(5, pack(&buffer, int64_t(1ULL << 32)));
EXPECT_EQ(5, pack(&buffer, int64_t(1ULL << 40 - 1)));
EXPECT_EQ(6, pack(&buffer, int64_t(1ULL << 40)));
EXPECT_EQ(6, pack(&buffer, int64_t(1ULL << 48 - 1)));
EXPECT_EQ(7, pack(&buffer, int64_t(1ULL << 48)));
EXPECT_EQ(7, pack(&buffer, int64_t(1ULL << 56 -1)));
EXPECT_EQ(8, pack(&buffer, int64_t(1ULL << 56)));
EXPECT_EQ(8, pack(&buffer, int64_t(1ULL << 64 - 1)));
EXPECT_EQ(buffer_space + 102 + 52, buffer);
EXPECT_EQ(5 + 8, pack(&buffer, -int64_t(1ULL << 32)));
EXPECT_EQ(5 + 8, pack(&buffer, -int64_t(1ULL << 40 - 1)));
EXPECT_EQ(6 + 8, pack(&buffer, -int64_t(1ULL << 40)));
EXPECT_EQ(6 + 8, pack(&buffer, -int64_t(1ULL << 48 - 1)));
EXPECT_EQ(7 + 8, pack(&buffer, -int64_t(1ULL << 48)));
EXPECT_EQ(7 + 8, pack(&buffer, -int64_t(1ULL << 56 -1)));
EXPECT_EQ(8, pack(&buffer, -int64_t(1ULL << 56)));
EXPECT_EQ(buffer_space + 102 + 52 + 44, buffer);
}
TEST_F(PackerTest, unpack_int) {
// The majority of tests were performed in the pack test. This one will
// now test the integration and only spot check
char *buffer = buffer_space;
ASSERT_EQ(1, pack(&buffer, int(0)));
ASSERT_EQ(1, pack(&buffer, int(1)));
ASSERT_EQ(1 + 8, pack(&buffer, int(-1)));
ASSERT_EQ(1, pack(&buffer, int(255)));
ASSERT_EQ(2, pack(&buffer, int(256)));
ASSERT_EQ(3, pack(&buffer, int((1<<24) - 1)));
ASSERT_EQ(4, pack(&buffer, -int(1<<24)));
ASSERT_EQ(4, pack(&buffer, int(1<<25)));
ASSERT_EQ(4, pack(&buffer, -int(1<<25)));
ASSERT_EQ(buffer_space + 21, buffer);
// // Write the buffer to a file and read it back
// ofstream oFile;
// oFile.open(testFile);
// oFile.write(buffer_space, buffer - buffer_space);
// oFile.close();
//
// ifstream in;
// in.open(testFile);
const char *readPtr = buffer_space;
EXPECT_EQ(0, unpack<int>(&readPtr, 1));
EXPECT_EQ(1, unpack<int>(&readPtr, 1));
EXPECT_EQ(-1, unpack<int>(&readPtr, 1 + 8));
EXPECT_EQ(255, unpack<int>(&readPtr, 1));
EXPECT_EQ(256, unpack<int>(&readPtr, 2));
EXPECT_EQ(int((1<<24) - 1), unpack<int>(&readPtr, 3));
EXPECT_EQ(-int(1<<24), unpack<int>(&readPtr, 4));
EXPECT_EQ(int(1<<25), unpack<int>(&readPtr, 4));
EXPECT_EQ(-int(1<<25), unpack<int>(&readPtr, 4));
EXPECT_EQ(buffer_space + 21, readPtr);
// std::remove(testFile);
}
TEST_F(PackerTest, unpack_pointer) {
void *ptr0 = (void*)(0x1234567890123456);
void *ptr1 = (void*)(0xf23456789012);
char *buffer = buffer_space;
EXPECT_EQ(8U, pack(&buffer, ptr0));
EXPECT_EQ(6U, pack(&buffer, ptr1));
EXPECT_EQ(buffer_space + 14, buffer);
const char *readPtr = buffer_space;
EXPECT_EQ(ptr0, unpack<void*>(&readPtr, 8));
EXPECT_EQ(ptr1, unpack<void*>(&readPtr, 6));
EXPECT_EQ(buffer_space + 14, readPtr);
}
TEST_F(PackerTest, unpack_uint64_t) {
uint64_t u0 = (uint64_t)(0x1234567890123456);
uint64_t u1 = (uint64_t)(0xf23456789012);
char *buffer = buffer_space;
EXPECT_EQ(8U, pack(&buffer, u0));
EXPECT_EQ(6U, pack(&buffer, u1));
ASSERT_EQ(buffer_space + 14, buffer);
const char *readPtr = buffer_space;
EXPECT_EQ(u0, unpack<uint64_t>(&readPtr, 8));
EXPECT_EQ(u1, unpack<uint64_t>(&readPtr, 6));
EXPECT_EQ(buffer_space + 14, readPtr);
}
TEST_F(PackerTest, unpack_ptrdiff) {
char *ptr0 = (char*)(0x1234567890123456);
char *ptr1 = (char*)(0x1234567890123450);
char *ptr2 = (char*)(0xf234567890123456);
std::ptrdiff_t smallDiff1 = ptr0 - ptr1;
std::ptrdiff_t smallDiff2 = ptr1 - ptr0;
std::ptrdiff_t bigDiff1 = ptr0 - ptr2;
std::ptrdiff_t bigDiff2 = ptr2 - ptr0;
char *buffer = buffer_space;
EXPECT_EQ(1U, pack(&buffer, smallDiff1));
EXPECT_EQ(1 + 8, pack(&buffer, smallDiff2));
EXPECT_EQ(8, pack(&buffer, bigDiff1));
EXPECT_EQ(8, pack(&buffer, bigDiff2));
ASSERT_EQ(buffer_space + 18, buffer);
const char *readPtr = buffer_space;
EXPECT_EQ(smallDiff1, unpack<std::ptrdiff_t>(&readPtr, 1U));
EXPECT_EQ(smallDiff2, unpack<std::ptrdiff_t>(&readPtr, 1 + 8));
EXPECT_EQ(bigDiff1, unpack<std::ptrdiff_t>(&readPtr, 8));
EXPECT_EQ(bigDiff2, unpack<std::ptrdiff_t>(&readPtr, 8));
EXPECT_EQ(buffer_space + 18, readPtr);
}
TEST_F(PackerTest, packFloating) {
char *buffer = buffer_space;
EXPECT_EQ(8, pack(&buffer, (double)(0.0)));
EXPECT_EQ(4, pack(&buffer, (float)0.0));
EXPECT_EQ(buffer_space + 12, buffer);
EXPECT_EQ(8, pack(&buffer, (double)(0.1)));
EXPECT_EQ(4, pack(&buffer, (float)(0.1)));
EXPECT_EQ(buffer_space + 24, buffer);
}
TEST_F(PackerTest, unpack_floating) {
char *buffer = buffer_space;
ASSERT_EQ(8, pack(&buffer, (double)(0.0)));
ASSERT_EQ(4, pack(&buffer, (float)0.0));
ASSERT_EQ(8, pack(&buffer, (double)(0.1)));
ASSERT_EQ(4, pack(&buffer, (float)(0.1)));
ASSERT_EQ(buffer_space + 24, buffer);
const char *readPtr = buffer_space;
EXPECT_EQ(0.0, unpack<double>(&readPtr, 8));
EXPECT_EQ(0.0, unpack<float>(&readPtr, 4));
EXPECT_EQ(buffer_space + sizeof(float) + sizeof(double), readPtr);
EXPECT_EQ(0.1, unpack<double>(&readPtr, 8));
EXPECT_EQ(0.1f, unpack<float>(&readPtr, 4));
EXPECT_EQ(buffer_space + 2*(sizeof(float) + sizeof(double)), readPtr);
}
TEST_F(PackerTest, getSizeOfPackedValues) {
BufferUtils::TwoNibbles nibbles[1000];
char *buffer = buffer_space;
int nibbleCntr = 0;
// Try special types
nibbles[nibbleCntr++/2].first = pack(&buffer, (float)(0.1));
EXPECT_EQ(4, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, (double)(0.1));
EXPECT_EQ(12, getSizeOfPackedValues(nibbles, nibbleCntr));
// Try unsigned numbers
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(0));
EXPECT_EQ(13, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1<<8));
EXPECT_EQ(15, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(1<<16));
EXPECT_EQ(18, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1<<24));
EXPECT_EQ(22, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(1UL<<32));
EXPECT_EQ(27, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1UL<<40));
EXPECT_EQ(33, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(1UL<<48));
EXPECT_EQ(40, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1UL<<56));
EXPECT_EQ(48, getSizeOfPackedValues(nibbles, nibbleCntr));
// Try signed numbers
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-1));
EXPECT_EQ(49, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1<<8)));
EXPECT_EQ(51, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1<<16)));
EXPECT_EQ(54, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1<<24)));
EXPECT_EQ(58, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1LL<<32)));
EXPECT_EQ(63, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1LL<<40)));
EXPECT_EQ(69, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1LL<<48)));
EXPECT_EQ(76, getSizeOfPackedValues(nibbles, nibbleCntr));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1LL<<56)));
EXPECT_EQ(84, getSizeOfPackedValues(nibbles, nibbleCntr));
}
TEST_F(PackerTest, nibbler) {
BufferUtils::TwoNibbles nibbles[1000];
char backing_buffer[1024];
char *buffer = backing_buffer;
// Start packing some data
int nibbleCntr = 0;
// Try special types
nibbles[nibbleCntr++/2].first = pack(&buffer, (float)(0.1));
nibbles[nibbleCntr++/2].second = pack(&buffer, (double)(0.2));
// Try unsigned numbers
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(0));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1<<8));
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(1<<16));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1<<24));
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(1UL<<32));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1UL<<40));
nibbles[nibbleCntr++/2].first = pack(&buffer, uint64_t(1UL<<48));
nibbles[nibbleCntr++/2].second = pack(&buffer, uint64_t(1UL<<56));
// Try signed numbers
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1<<8)));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1<<16)));
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1<<24)));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1LL<<32)));
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1LL<<40)));
nibbles[nibbleCntr++/2].second = pack(&buffer, int64_t(-(1LL<<48)));
nibbles[nibbleCntr++/2].first = pack(&buffer, int64_t(-(1LL<<56)));
// Now let's squash the nibbles and pack()-ed values into one stream.
uint32_t packedBytes = buffer - backing_buffer;
uint32_t nibbleBytes = (nibbleCntr+1)/2;
memmove(backing_buffer + nibbleBytes, backing_buffer, packedBytes);
memcpy(backing_buffer, nibbles, nibbleBytes);
Nibbler nb(backing_buffer, nibbleCntr);
EXPECT_EQ(nibbleBytes, nb.currPackedValue - backing_buffer);
EXPECT_EQ(packedBytes, nb.getEndOfPackedArguments() - nb.currPackedValue);
EXPECT_EQ((float)0.1, nb.getNext<float>());
EXPECT_EQ((double)0.2, nb.getNext<double>());
EXPECT_EQ(0, nb.getNext<uint64_t>());
EXPECT_EQ(1<<8, nb.getNext<uint64_t>());
EXPECT_EQ(1<<16, nb.getNext<uint64_t>());
EXPECT_EQ(1<<24, nb.getNext<uint64_t>());
EXPECT_EQ(1UL<<32, nb.getNext<uint64_t>());
EXPECT_EQ(1UL<<40, nb.getNext<uint64_t>());
EXPECT_EQ(1UL<<48, nb.getNext<uint64_t>());
EXPECT_EQ(1UL<<56, nb.getNext<uint64_t>());
EXPECT_EQ(int64_t(-(1<<8)), nb.getNext<int64_t>());
EXPECT_EQ(int64_t(-(1<<16)), nb.getNext<int64_t>());
EXPECT_EQ(int64_t(-(1<<24)), nb.getNext<int64_t>());
EXPECT_EQ(int64_t(-(1LL<<32)), nb.getNext<int64_t>());
EXPECT_EQ(int64_t(-(1LL<<40)), nb.getNext<int64_t>());
EXPECT_EQ(int64_t(-(1LL<<48)), nb.getNext<int64_t>());
EXPECT_EQ(int64_t(-(1LL<<56)), nb.getNext<int64_t>());
}
TEST_F(PackerTest, nibbler_assert) {
BufferUtils::TwoNibbles nibbles[1000];
char backing_buffer[1024];
char *buffer = backing_buffer;
// Start packing some data
int nibbleCntr = 0;
nibbles[nibbleCntr++/2].first = pack(&buffer, (float)(0.1));
nibbles[nibbleCntr++/2].second = pack(&buffer, (double)(0.2));
// Now let's squash the nibbles and pack()-ed values into one stream.
uint32_t packedBytes = buffer - backing_buffer;
uint32_t nibbleBytes = (nibbleCntr+1)/2;
memmove(backing_buffer + nibbleBytes, backing_buffer, packedBytes);
memcpy(backing_buffer, nibbles, nibbleBytes);
Nibbler nb(backing_buffer, nibbleCntr);
// Consume all the data and prepare for death
EXPECT_EQ((float)0.1, nb.getNext<float>());
EXPECT_EQ((double)0.2, nb.getNext<double>());
EXPECT_DEATH(nb.getNext<int>(), "");
}
} // namespace