#include <numeric>

#include <string>

#include <iterator>

#include <vector>

#include <algorithm>

#include <functional>

#include "iota.h"

#include "cppunit/cppunit_proxy.h"

#if !defined (STLPORT) || defined(_STLP_USE_NAMESPACES)

using namespace std;

#endif

//

// TestCase class

//

class SetIntersectionTest : public CPPUNIT_NS::TestCase

{

  CPPUNIT_TEST_SUITE(SetIntersectionTest);

  CPPUNIT_TEST(setintr0);

  CPPUNIT_TEST(setintr1);

  CPPUNIT_TEST(setintr2);

  CPPUNIT_TEST_SUITE_END();

protected:

  void setintr0();

  void setintr1();

  void setintr2();

};

CPPUNIT_TEST_SUITE_REGISTRATION(SetIntersectionTest);

//

// tests implementation

//

void SetIntersectionTest::setintr0()

{

  int v1[3] = { 13, 18, 23 };

  int v2[4] = { 10, 13, 17, 23 };

  int result[4] = { 0, 0, 0, 0 };

  set_intersection((int*)v1, (int*)v1 + 3, (int*)v2, (int*)v2 + 4, (int*)result);

  CPPUNIT_ASSERT(result[0]==13);

  CPPUNIT_ASSERT(result[1]==23);

  CPPUNIT_ASSERT(result[2]==0);

  CPPUNIT_ASSERT(result[3]==0);

}

void SetIntersectionTest::setintr1()

{

  vector <int> v1(10);

  __iota(v1.begin(), v1.end(), 0);

  vector <int> v2(10);

  __iota(v2.begin(), v2.end(), 7);

  vector<int> inter;

  set_intersection(v1.begin(), v1.end(), v2.begin(), v2.end(), back_inserter(inter));

  CPPUNIT_ASSERT( inter.size() == 3 );

  CPPUNIT_ASSERT( inter[0] == 7 );

  CPPUNIT_ASSERT( inter[1] == 8 );

  CPPUNIT_ASSERT( inter[2] == 9 );

}

void SetIntersectionTest::setintr2()

{

  char* word1 = "ABCDEFGHIJKLMNO";

  char* word2 = "LMNOPQRSTUVWXYZ";

  string inter;

  set_intersection(word1, word1 + ::strlen(word1), word2, word2 + ::strlen(word2),

                   back_inserter(inter), less<char>());

  CPPUNIT_ASSERT( inter.size() == 4 );

  CPPUNIT_ASSERT( inter[0] == 'L' );

  CPPUNIT_ASSERT( inter[1] == 'M' );

  CPPUNIT_ASSERT( inter[2] == 'N' );

  CPPUNIT_ASSERT( inter[3] == 'O' );

}