search_test.cpp

stl的源码

#include <vector>
#include <numeric>
#include <algorithm>

#include "iota.h"
#include "cppunit/cppunit_proxy.h"

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

//
// TestCase class
//
class SearchTest : public CPPUNIT_NS::TestCase
{
  CPPUNIT_TEST_SUITE(SearchTest);
  CPPUNIT_TEST(search0);
  CPPUNIT_TEST(search1);
  CPPUNIT_TEST(search2);
  CPPUNIT_TEST_SUITE_END();

protected:
  void search0();
  void search1();
  void search2();

  static bool str_equal(const char* a_, const char* b_)
  {
    return strcmp(a_, b_) == 0 ? 1 : 0;
  }
};

CPPUNIT_TEST_SUITE_REGISTRATION(SearchTest);

//
// tests implementation
//
void SearchTest::search0()
{
  int v1[6] = { 1, 1, 2, 3, 5, 8 };
  int v2[6] = { 0, 1, 2, 3, 4, 5 };
  int v3[2] = { 3, 4 };

  int* location;
  location = search((int*)v1, (int*)v1 + 6, (int*)v3, (int*)v3 + 2);
  CPPUNIT_ASSERT(location == v1 + 6);

  location = search((int*)v2, (int*)v2 + 6, (int*)v3, (int*)v3 + 2);
  CPPUNIT_ASSERT(location != v2 + 6);
  CPPUNIT_ASSERT(location - v2 == 3);
}
void SearchTest::search1()
{
  typedef vector <int> IntVec;
  IntVec v1(10);
  __iota(v1.begin(), v1.end(), 0);
  IntVec v2(3);
  __iota(v2.begin(), v2.end(), 50);

  IntVec::iterator location;
  location = search(v1.begin(), v1.end(), v2.begin(), v2.end());

  CPPUNIT_ASSERT(location == v1.end());

  __iota(v2.begin(), v2.end(), 4);

  location = search(v1.begin(), v1.end(), v2.begin(), v2.end());

  CPPUNIT_ASSERT(location != v1.end());
  CPPUNIT_ASSERT(location - v1.begin() == 4);
}
void SearchTest::search2()
{
  char const* grades[] = { "A", "B", "C", "D", "F" };
  char const* letters[] = { "Q", "E", "D" };
  const unsigned gradeCount = sizeof(grades) / sizeof(grades[0]);
  const unsigned letterCount = sizeof(letters) / sizeof(letters[0]);
  char const** location = search((char const**)grades, (char const**)grades + gradeCount, (char const**)letters, (char const**)letters + letterCount, str_equal);

  CPPUNIT_ASSERT(location == grades + gradeCount);

  copy((char const**)grades + 1, (char const**)grades + 1 + letterCount, (char const**)letters);
  location = search((char const**)grades, (char const**)grades + gradeCount, (char const**)letters, (char const**)letters + letterCount, str_equal);

  CPPUNIT_ASSERT(location != grades + gradeCount);
  CPPUNIT_ASSERT(location - grades == 1);

}