find_test.cpp

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#include <vector>
#include <algorithm>

#include "cppunit/cppunit_proxy.h"

#if !defined (STLPORT) || defined(_STLP_USE_NAMESPACES)
using namespace std;
#endif

//
// TestCase class
//
class FindTest : public CPPUNIT_NS::TestCase
{
  CPPUNIT_TEST_SUITE(FindTest);
  CPPUNIT_TEST(find0);
  CPPUNIT_TEST(find1);
  CPPUNIT_TEST(findif0);
  CPPUNIT_TEST(findif1);
  CPPUNIT_TEST(find_char);
  CPPUNIT_TEST_SUITE_END();

protected:
  void find0();
  void find1();
  void findif0();
  void findif1();
  void find_char();
  static bool odd(int a_);
  static bool div_3(int a_);
};

CPPUNIT_TEST_SUITE_REGISTRATION(FindTest);

//
// tests implementation
//
void FindTest::find0()
{
  int numbers[10] = { 0, 1, 4, 9, 16, 25, 36, 49, 64 };

  int *location = find((int*)numbers, (int*)numbers + 10, 25);

  CPPUNIT_ASSERT((location - numbers)==5);

  int *out_range = find((int*)numbers, (int*)numbers + 10, 128);

  CPPUNIT_ASSERT( out_range == (int *)(numbers + 10) );
}

struct Key
{
  int data;

  /* This operator should rather be global and commutative
     but implementing it this way show that STLport used to
     ask too much from the user code. */
  bool operator == (int d) const
  {
    return data == d;
  }
};

void FindTest::find1()
{
  int years[] = { 1942, 1952, 1962, 1972, 1982, 1992 };

  const unsigned yearCount = sizeof(years) / sizeof(years[0]);
  int* location = find((int*)years, (int*)years + yearCount, 1972);

  CPPUNIT_ASSERT((location - years)==3);
}

void FindTest::findif0()
{
  {
    int numbers[6] = { 2, 4, 8, 15, 32, 64 };
    int *location = find_if((int*)numbers, (int*)numbers + 6, odd);

    CPPUNIT_ASSERT((location - numbers)==3);

    int numbers_even[6] = { 2, 4, 8, 16, 32, 64 };

    int *out_range = find_if((int*)numbers_even, (int*)numbers_even + 6, odd);

    CPPUNIT_ASSERT( out_range == (int *)(numbers_even + 6) );
  }

  {
    Key keys[10] = { {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0}, {0} };
    Key const* k = find(keys + 0, keys + 10, 5);
    CPPUNIT_ASSERT( k == keys + 10 );
  }
}

void FindTest::findif1()
{
  typedef vector <int> IntVec;
  IntVec v(10);
  for(int i = 0; (size_t)i < v.size(); ++i)
    v[i] =(i + 1) *(i + 1);
  IntVec::iterator iter;
  iter = find_if(v.begin(), v.end(), div_3);
  CPPUNIT_ASSERT((iter - v.begin())==2);
}

bool FindTest::odd(int a_)
{
  return (a_ % 2) != 0;
}

bool FindTest::div_3(int a_)
{
  return a_ % 3 ? 0 : 1;
}

void FindTest::find_char()
{
  char str[] = "abcdefghij";
  char *pstr = (char*)str;
  const char* cpstr = (const char*)str;
  size_t str_size = sizeof(str) / sizeof(char);

  char *d = find(pstr, pstr + str_size, 'd');
  CPPUNIT_ASSERT( *d == 'd' );

  const char *e = find(cpstr, cpstr + str_size, 'e');
  CPPUNIT_ASSERT( *e == 'e' );

  char *last = find(pstr, pstr + str_size, 'x');
  CPPUNIT_ASSERT( last == pstr + str_size );

  const char *clast = find(cpstr, cpstr + str_size, 'x');
  CPPUNIT_ASSERT( clast == cpstr + str_size );
}