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EliasCasoPrueba.cpp
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EliasCasoPrueba.cpp
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// vim: set expandtab tabstop=8 shiftwidth=8 foldmethod=marker:
/** @file EliasCasoPrueba.cpp
* Pruebas de unidad a algoritmos de compresión
*
* @package Mt77
* @author Vladimir Támara Patiño. vtamara@pasosdeJesus.org
* Dominio público. 2009. Sin garantías
* http://creativecommons.org/licenses/publicdomain/
* @version $Id: EliasCasoPrueba.cpp,v 1.7 2010/01/18 16:12:50 vtamara Exp $
*/
#include <sstream>
#include <iostream>
#include <fstream>
#include <stdint.h>
#include "Elias.hpp"
#include "EliasCasoPrueba.hpp"
using namespace std;
CPPUNIT_TEST_SUITE_REGISTRATION(EliasCasoPrueba);
/* rep. binaria de http://www.velocityreviews.com/forums/t318127-using-binary-numbers-in-c.html */
#define HEX__(n) 0x##n##LU
/* 8-bit conversion function */
#define B8__(x) ((x&0x0000000FLU)?1:0) \
+((x&0x000000F0LU)?2:0) \
+((x&0x00000F00LU)?4:0) \
+((x&0x0000F000LU)?8:0) \
+((x&0x000F0000LU)?16:0) \
+((x&0x00F00000LU)?32:0) \
+((x&0x0F000000LU)?64:0) \
+((x&0xF0000000LU)?128:0)
/* *** user macros *** */
/* for upto 8-bit binary constants */
#define B8(d) ((unsigned char)B8__(HEX__(d)))
/* for upto 16-bit binary constants, MSB first */
#define B16(dmsb,dlsb) (((uint64_t)B8(dmsb)<< 8) + (uint64_t)B8(dlsb))
/* for upto 32-bit binary constants, MSB first */
#define B32(dmsb,db2,db3,dlsb) (((uint64_t)B8(dmsb)<<24) \
+ ((uint64_t)B8(db2)<<16) \
+ ((uint64_t)B8(db3)<< 8) \
+ B8(dlsb))
/* Sample usage:
B8(01010101) = 85
B16(10101010,01010101) = 43605
B32(10000000,11111111,10101010,01010101) = 2164238933
*/
void EliasCasoPrueba::prueba_piso_logb2()
{
CPPUNIT_ASSERT_THROW(piso_logb2(0), std::string );
CPPUNIT_ASSERT(piso_logb2((uint32_t)1) == 0);
CPPUNIT_ASSERT(piso_logb2((uint32_t)2) == 1);
CPPUNIT_ASSERT(piso_logb2((uint32_t)5) == 2);
CPPUNIT_ASSERT(piso_logb2((uint32_t)7) == 2);
CPPUNIT_ASSERT(piso_logb2((uint32_t)8) == 3);
}
void EliasCasoPrueba::prueba_techo_logb2()
{
CPPUNIT_ASSERT_THROW(techo_logb2(0), std::string);
CPPUNIT_ASSERT(techo_logb2(1) == 0);
CPPUNIT_ASSERT(techo_logb2(2) == 1);
CPPUNIT_ASSERT(techo_logb2(5) == 3);
CPPUNIT_ASSERT(techo_logb2(7) == 3);
CPPUNIT_ASSERT(techo_logb2(8) == 3);
CPPUNIT_ASSERT(techo_logb2(9) == 4);
}
void EliasCasoPrueba::prueba_pot2()
{
CPPUNIT_ASSERT(pot2(0) == 1);
CPPUNIT_ASSERT(pot2(1) == 2);
CPPUNIT_ASSERT(pot2(2) == 4);
CPPUNIT_ASSERT(pot2(3) == 8);
}
void EliasCasoPrueba::prueba_unario()
{
vector<bool> vb(0);
CPPUNIT_ASSERT_THROW(codifica_unario(0, vb), std::string);
codifica_unario(10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "1111111110");
//clog << "vb2ascii(vb) = " << vb2ascii(vb) << endl;
long r = decodifica_unario(vb);
CPPUNIT_ASSERT(r == 10);
vb.clear();
}
void EliasCasoPrueba::prueba_pone_un_entero()
{
vector<bool> vb(0);
pone_un_entero(1, 2, vb);
CPPUNIT_ASSERT(vb2str(vb) == "01");
vb.clear();
pone_un_entero(2, 2, vb);
CPPUNIT_ASSERT(vb2str(vb) == "10");
vb.clear();
pone_un_entero(3, 3, vb);
CPPUNIT_ASSERT(vb2str(vb) == "011");
}
void EliasCasoPrueba::prueba_toma_un_entero()
{
vector<bool> vb(0);
CPPUNIT_ASSERT_THROW(toma_un_entero(10,vb), std::string);
vb.clear();
vb = str2vb("0");
CPPUNIT_ASSERT(toma_un_entero(1,vb) == 0);
vb.clear();
vb = str2vb("01");
CPPUNIT_ASSERT(toma_un_entero(2,vb) == 1);
vb.clear();
vb = str2vb("101");
CPPUNIT_ASSERT(toma_un_entero(3,vb) == 5);
}
void EliasCasoPrueba::prueba_codifica_elias_gama()
{
vector<bool> vb(0);
CPPUNIT_ASSERT_THROW(codifica_elias_gama(0,vb), std::string);
codifica_elias_gama(1, vb);
CPPUNIT_ASSERT(vb2str(vb) == "0");
vb.clear();
codifica_elias_gama(2, vb);
CPPUNIT_ASSERT(vb2str(vb) == "100");
vb.clear();
codifica_elias_gama(3, vb);
CPPUNIT_ASSERT(vb2str(vb) == "101");
vb.clear();
codifica_elias_gama(4, vb);
CPPUNIT_ASSERT(vb2str(vb) == "11000");
vb.clear();
codifica_elias_gama(5, vb);
CPPUNIT_ASSERT(vb2str(vb) == "11001");
vb.clear();
codifica_elias_gama(6, vb);
CPPUNIT_ASSERT(vb2str(vb) == "11010");
vb.clear();
codifica_elias_gama(7, vb);
CPPUNIT_ASSERT(vb2str(vb) == "11011");
vb.clear();
codifica_elias_gama(8, vb);
string rs = vb2str(vb);
CPPUNIT_ASSERT(rs == "1110000");
vb.clear();
codifica_elias_gama(9, vb);
CPPUNIT_ASSERT(vb2str(vb) == "1110001");
}
void EliasCasoPrueba::prueba_decodifica_elias_gama()
{
vector<bool> vb(0);
CPPUNIT_ASSERT_THROW(decodifica_elias_gama(vb), std::string);
vb.clear();
vb = str2vb("1110001");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 9);
vb.clear();
vb = str2vb("1110000");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 8);
vb.clear();
vb = str2vb("11011");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 7);
vb.clear();
vb = str2vb("11010");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 6);
vb.clear();
vb = str2vb("11001");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 5);
vb.clear();
vb = str2vb("11000");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 4);
vb.clear();
vb = str2vb("101");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 3);
vb.clear();
vb = str2vb("100");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 2);
vb.clear();
vb = str2vb("0");
CPPUNIT_ASSERT(decodifica_elias_gama(vb) == 1);
}
void EliasCasoPrueba::prueba_long_elias_gama()
{
CPPUNIT_ASSERT_THROW((void)long_elias_gama(0), std::string);
CPPUNIT_ASSERT(long_elias_gama(1) == 1);
CPPUNIT_ASSERT(long_elias_gama(2) == 1);
CPPUNIT_ASSERT(long_elias_gama(3) == 1);
CPPUNIT_ASSERT(long_elias_gama(4) == 1);
CPPUNIT_ASSERT(long_elias_gama(5) == 1);
CPPUNIT_ASSERT(long_elias_gama(6) == 1);
CPPUNIT_ASSERT(long_elias_gama(7) == 1);
CPPUNIT_ASSERT(long_elias_gama(8) == 1);
CPPUNIT_ASSERT(long_elias_gama(9) == 1);
CPPUNIT_ASSERT(long_elias_gama(15) == 1);
CPPUNIT_ASSERT(long_elias_gama(16) == 2);
CPPUNIT_ASSERT(long_elias_gama(17) == 2);
CPPUNIT_ASSERT(long_elias_gama(31) == 2);
CPPUNIT_ASSERT(long_elias_gama(32) == 2);
CPPUNIT_ASSERT(long_elias_gama(33) == 2);
CPPUNIT_ASSERT(long_elias_gama(63) == 2);
CPPUNIT_ASSERT(long_elias_gama(64) == 2);
CPPUNIT_ASSERT(long_elias_gama(65) == 2);
CPPUNIT_ASSERT(long_elias_gama(127) == 2);
CPPUNIT_ASSERT(long_elias_gama(128) == 2);
CPPUNIT_ASSERT(long_elias_gama(129) == 2);
CPPUNIT_ASSERT(long_elias_gama(255) == 2);
CPPUNIT_ASSERT(long_elias_gama(256) == 3);
CPPUNIT_ASSERT(long_elias_gama(257) == 3);
CPPUNIT_ASSERT(long_elias_gama(4095) == 3);
CPPUNIT_ASSERT(long_elias_gama(4096) == 4);
CPPUNIT_ASSERT(long_elias_gama(4097) == 4);
CPPUNIT_ASSERT(long_elias_gama(pot2(16)-1) == 4);
CPPUNIT_ASSERT(long_elias_gama(pot2(16)) == 5);
CPPUNIT_ASSERT(long_elias_gama(pot2(16)+1) == 5);
CPPUNIT_ASSERT(long_elias_gama(pot2(32)-1) == 8);
/* CPPUNIT_ASSERT(long_elias_gama(pot2(32)) == 9);
CPPUNIT_ASSERT(long_elias_gama(pot2(32)+1) == 9); */
// Teo: Si k es entero no negativo, el entero 2^4k requiere
// k+1 bytes en codificación gama de Elías.
// Dem: Este número requiere 4k bits binarios para representarse
// Por tanto la codificación unaria toma 4k bits, un 0 y otros 4k
// bits en 0 para un total de 8k+1 bits, los cuales en bytes
// requerirían techo(8k+1/8) k bytes.
// 2^0=1 requiere 1
// 2^4=16 requiere 2
// 2^8=256 requiere 3
// 2^12=4096 requiere 4
// 2^16=65536 requiere 5
// ...
// 2^32 requiere 9
// Asi que este esquema es muy bueno para codificar números menores a
// 65535, para números mayores requiere más bytes que un long típico.
//
// Esto se traduce en recomendación para usuarios, los documentos pueden
// ser de cualquier tamaño, pero para facilitar compresión se recomienda
// que sean de máximo 64K
}
void EliasCasoPrueba::prueba_escribe_elias_gama()
{
vector<bool> vb(0);
stringstream ss;
ss.clear();
ss.str("");
CPPUNIT_ASSERT_THROW(escribe_elias_gama(ss, 0), std::string);
escribe_elias_gama(ss, 1);
//clog << "1 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)0);
ss.clear();
ss.str("");
escribe_elias_gama(ss, 2);
//clog << "2 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(10000000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 3);
//clog << "3 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(10100000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 4);
//clog << "4 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11000000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 5);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11001000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 6);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11010000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 7);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11011000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 8);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11100000));
ss.clear();
ss.str("");
escribe_elias_gama(ss, 9);
string rs = ss.str();
CPPUNIT_ASSERT(rs[0] == (char)B8(11100010));
ofstream os("gama.elias", ios::out | ios::binary);
escribe_elias_gama(os, 16);
os.close();
ss.str("");
ss.clear();
escribe_elias_gama(ss, 16);
rs = ss.str();
CPPUNIT_ASSERT(rs[0] == (char)B8(11110000));
CPPUNIT_ASSERT(rs[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, 32);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111000));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, 64);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111100));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, 128);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111110));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, 256);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, 512);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(10000000));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, 1024);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(11000000));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
// Si puede representar entero tipicamente de n bits, requiere 2n+1 bits para
// indicarlo
// n bits bytes
// 1 3 1
// 2 5 1
// 3 7 1
// 4 9 2
// 5 11
// 6 13
// 7 15
// 8 17 techo(17/8) 3
// techo(bits/8) = 4 en bits=25 que da n=12
// techo(bits/8) = 5 en bits=33 que da n=piso(bits/2)=16,
// techo(bits/8) = 6 en bits=41 que da n=piso(bits/2)=20,
//
// es decir n=4k 2^4k ocupa k+1 bytes
// piso(techo(2*piso(log_2(k))+1/8)/2)>=6
//
//
ss.str("");
ss.clear();
escribe_elias_gama(ss, 65536);
rs = ss.str();
/*cout << 65536 << " " << rs << ", length=" << rs.length() << endl;
cout << "rs[0]=" << rs[0] <<" o " << (int)((unsigned char)rs[0])<< endl;
cout << "rs[1]=" << rs[1] <<" o " << (int)((unsigned char)rs[1])<< endl;
cout << "rs[2]=" << rs[2] <<" o " << (int)((unsigned char)rs[2])<< endl;
cout << "rs[3]=" << rs[3] <<" o " << (int)((unsigned char)rs[3])<< endl;
cout << "rs[4]=" << rs[4] <<" o " << (int)((unsigned char)rs[4])<< endl;*/
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
CPPUNIT_ASSERT(ss.str()[3] == (char)B8(00000000));
CPPUNIT_ASSERT(ss.str()[4] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama(ss, (uint32_t)(pot2(32)-1));
rs = ss.str();
/*cout << "2^32 - 1 " << " " << rs << ", length=" << rs.length() << endl;
cout << "rs[0]=" << rs[0] <<" o " << (int)((unsigned char)rs[0])<< endl;
cout << "rs[1]=" << rs[1] <<" o " << (int)((unsigned char)rs[1])<< endl;
cout << "rs[2]=" << rs[2] <<" o " << (int)((unsigned char)rs[2])<< endl;
cout << "rs[3]=" << rs[3] <<" o " << (int)((unsigned char)rs[3])<< endl;
cout << "rs[4]=" << rs[4] <<" o " << (int)((unsigned char)rs[4])<< endl;
cout << "rs[5]=" << rs[5] <<" o " << (int)((unsigned char)rs[5])<< endl;
cout << "rs[6]=" << rs[6] <<" o " << (int)((unsigned char)rs[6])<< endl;
cout << "rs[7]=" << rs[7] <<" o " << (int)((unsigned char)rs[7])<< endl; */
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[3] == (char)B8(11111110));
CPPUNIT_ASSERT(ss.str()[4] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[5] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[6] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[7] == (char)B8(11111110));
}
void EliasCasoPrueba::prueba_escribe_elias_gama2()
{
stringstream ss;
ss.clear();
ss.str("");
CPPUNIT_ASSERT_THROW(escribe_elias_gama2(ss, 0), std::string);
escribe_elias_gama2(ss, 1);
//clog << "1 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)0);
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 2);
//clog << "2 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(10000000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 3);
//clog << "3 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(10100000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 4);
//clog << "4 es '" << ss.str() << "'" << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11000000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 5);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11001000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 6);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11010000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 7);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11011000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 8);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11100000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 9);
string rs = ss.str();
CPPUNIT_ASSERT(rs[0] == (char)B8(11100010));
ofstream os("gama.elias", ios::out | ios::binary);
escribe_elias_gama2(os, 16);
os.close();
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 16);
rs = ss.str();
CPPUNIT_ASSERT(rs[0] == (char)B8(11110000));
CPPUNIT_ASSERT(rs[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 32);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111000));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 64);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111100));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 128);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111110));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 256);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 512);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(10000000));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 1024);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(11000000));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, 65536);
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(00000000));
CPPUNIT_ASSERT(ss.str()[3] == (char)B8(00000000));
CPPUNIT_ASSERT(ss.str()[4] == (char)B8(00000000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 40);
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111001));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00000000));
ss.clear();
ss.str("");
escribe_elias_gama2(ss, 41);
cout << "41 ss=" << ss.str() << endl;
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111001));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(00100000));
ss.str("");
ss.clear();
escribe_elias_gama2(ss, (uint32_t)(pot2(32)-1));
rs = ss.str();
CPPUNIT_ASSERT(ss.str()[0] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[1] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[2] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[3] == (char)B8(11111110));
CPPUNIT_ASSERT(ss.str()[4] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[5] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[6] == (char)B8(11111111));
CPPUNIT_ASSERT(ss.str()[7] == (char)B8(11111110));
}
void EliasCasoPrueba::prueba_lee_elias_gama()
{
vector<bool> vb(0);
std::stringstream ss;
CPPUNIT_ASSERT_THROW(lee_elias_gama(ss), std::string);
ss.clear();
ss.str("");
ss << (char)B8(11111110);
CPPUNIT_ASSERT_THROW(lee_elias_gama(ss), std::string);
ss.clear();
ss.str("");
ss << (char)B8(11110000) << (char) 0;
CPPUNIT_ASSERT(lee_elias_gama(ss) == 16);
ss.clear();
ss.str("");
ss << (char)B8(11100010);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 9);
ss.clear();
ss.str("");
ss << (char)B8(11100000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 8);
ss.clear();
ss.str("");
ss << (char)B8(11011000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 7);
ss.clear();
ss.str("");
ss << (char)B8(11010000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 6);
ss.clear();
ss.str("");
ss << (char)B8(11001000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 5);
ss.clear();
ss.str("");
ss << (char)B8(11000000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 4);
ss.clear();
ss.str("");
ss << (char)B8(10100000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 3);
ss.clear();
ss.str("");
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 2);
ss.clear();
ss.str("");
ss << (char)0;
CPPUNIT_ASSERT(lee_elias_gama(ss) == 1);
ss.clear();
ss.str("");
ss << (char)B8(11110000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama(ss) == 16);
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111110);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111110);
CPPUNIT_ASSERT(lee_elias_gama(ss) == pot2(32)-1);
}
void EliasCasoPrueba::prueba_lee_elias_gama2()
{
vector<bool> vb(0);
std::stringstream ss;
CPPUNIT_ASSERT_THROW(lee_elias_gama2(ss), std::string);
ss.clear();
ss.str("");
ss << (char)B8(11110000) << (char) 0;
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 16);
ss.clear();
ss.str("");
ss << (char)B8(11100010);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 9);
ss.clear();
ss.str("");
ss << (char)B8(11100000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 8);
ss.clear();
ss.str("");
ss << (char)B8(11011000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 7);
ss.clear();
ss.str("");
ss << (char)B8(11010000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 6);
ss.clear();
ss.str("");
ss << (char)B8(11001000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 5);
ss.clear();
ss.str("");
ss << (char)B8(11000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 4);
ss.clear();
ss.str("");
ss << (char)B8(10100000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 3);
ss.clear();
ss.str("");
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 2);
ss.clear();
ss.str("");
ss << (char)0;
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 1);
ss.clear();
ss.str("");
ss << (char)B8(11110000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 16);
ss.clear();
ss.str("");
ss << (char)B8(11111001);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 40);
ss.clear();
ss.str("");
ss << (char)B8(11111001);
ss << (char)B8(00100000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 41);
ss.clear();
ss.str("");
ss << (char)B8(11111101);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 96);
ss.clear();
ss.str("");
ss << (char)B8(11111101);
ss << (char)B8(00001000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 97);
ss.clear();
ss.str("");
ss << (char)B8(11111110);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 192);
ss.clear();
ss.str("");
ss << (char)B8(11111110);
ss << (char)B8(10000010);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 193);
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(01000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 384);
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(01000000);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == 385);
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(10100000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (512+256));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(10100000);
ss << (char)B8(00100000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (512+256+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11010000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (1024+512));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11010000);
ss << (char)B8(00001000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (1024+512+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11101000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (2048+1024));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11101000);
ss << (char)B8(00000010);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (2048+1024+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11110100);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (4096+2048));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11110100);
ss << (char)B8(00000000);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (4096+2048+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111010);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (8192+4096));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111010);
ss << (char)B8(00000000);
ss << (char)B8(00100000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (8192+4096+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111110);
ss << (char)B8(10000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(15)+pot2(14)));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111110);
ss << (char)B8(10000000);
ss << (char)B8(00000010);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(15)+pot2(14)+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(01000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(16)+pot2(15)));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(01000000);
ss << (char)B8(00000000);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(16)+pot2(15)+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11110100);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(20)+pot2(19)));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11110100);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(20)+pot2(19)+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(01000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(24)+pot2(23)));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(01000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(24)+pot2(23)+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11110100);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(28)+pot2(27)));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11110100);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(00000000);
ss << (char)B8(10000000);
CPPUNIT_ASSERT(lee_elias_gama2(ss) == (pot2(28)+pot2(27)+1));
ss.clear();
ss.str("");
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111110);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111111);
ss << (char)B8(11111110);
//cout << "pot2(32) - 1 es " << pot2(32) - 1 << endl;
CPPUNIT_ASSERT(lee_elias_gama2(ss) == pot2(32) - 1);
}
void EliasCasoPrueba::prueba_codifica_binaria_minima()
{
vector<bool> vb(0);
CPPUNIT_ASSERT_THROW(codifica_binaria_minima(10, 0, vb), std::string);
vb.clear();
codifica_binaria_minima(1, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "000");
vb.clear();
codifica_binaria_minima(2, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "001");
vb.clear();
codifica_binaria_minima(3, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "010");
vb.clear();
codifica_binaria_minima(4, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "011");
vb.clear();
codifica_binaria_minima(5, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "100");
vb.clear();
codifica_binaria_minima(6, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "101");
vb.clear();
codifica_binaria_minima(7, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "1100");
vb.clear();
codifica_binaria_minima(8, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "1101");
vb.clear();
codifica_binaria_minima(9, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "1110");
vb.clear();
codifica_binaria_minima(10, 10, vb);
CPPUNIT_ASSERT(vb2str(vb) == "1111");
}
void EliasCasoPrueba::prueba_decodifica_binaria_minima()