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/*=========================================================================
Program: Visualization Toolkit
Module: TestBitArray.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkBitArray.h"
#include "vtkNew.h"
#include <bitset>
#include <string>
// This test makes sure that the unused reachable bits of the last byte are set
// to zero.
int TestBitArray(int, char*[])
{
vtkNew<vtkBitArray> array;
array->SetNumberOfComponents(1);
array->SetNumberOfValues(1);
// [1]
array->SetValue(0, 1);
unsigned char* data = static_cast<unsigned char*>(array->GetVoidPointer(0));
std::string str;
str = std::bitset<8>(data[0]).to_string();
if (str != "10000000")
{
std::cerr << "Bit array not initialized as expected. The raw data is " << str
<< ", it should be 10000000" << std::endl;
return EXIT_FAILURE;
}
array->SetNumberOfValues(0);
// [1111 1011 | 101]
array->InsertValue(0, 1);
array->InsertNextValue(1);
array->InsertNextValue(1);
array->InsertNextValue(1);
array->InsertNextValue(1);
array->InsertNextValue(0);
array->InsertNextValue(1);
array->InsertNextValue(1);
array->InsertNextValue(1);
array->InsertNextValue(0);
array->InsertNextValue(1);
data = static_cast<unsigned char*>(array->GetVoidPointer(0));
str = std::bitset<8>(data[0]).to_string() + " " + std::bitset<8>(data[1]).to_string();
if (str != std::string("11111011 10100000"))
{
std::cerr << "Bit array not initialized as expected. The raw data is " << str
<< ", it should be 11111011 10100000" << std::endl;
return EXIT_FAILURE;
}
unsigned char* ptr = array->WritePointer(0, 18);
// [1111 1011 | 1111 0011 | 10]
ptr[1] = 0xf3;
ptr[2] = (ptr[2] & 0x3f) | 0x80;
data = static_cast<unsigned char*>(array->GetVoidPointer(0));
str = std::bitset<8>(data[0]).to_string() + std::string(" ") +
std::bitset<8>(data[1]).to_string() + std::string(" ") + std::bitset<8>(data[2]).to_string();
if (str != "11111011 11110011 10000000")
{
std::cerr << "Bit array not initialized as expected. The raw data is " << str
<< ", it should be 11111011 10110011 10000000" << std::endl;
return EXIT_FAILURE;
}
array->Resize(2);
data = static_cast<unsigned char*>(array->GetVoidPointer(0));
str = std::bitset<8>(data[0]).to_string();
if (str != "11000000")
{
std::cerr << "Bit array not initialized as expected. The raw data is " << str
<< ", it should be 11000000" << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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