mirror of
https://github.com/boostorg/utility.git
synced 2025-05-09 02:44:10 +00:00
Merge pull request #9 from danieljames/remove-binary-search-test
Move binary_search_test.cpp into detail module.
This commit is contained in:
Daniel James
commit
45d884ffd7
@ -1,258 +0,0 @@
|
||||
// (C) Copyright David Abrahams 2000.
|
||||
// Distributed under the Boost Software License, Version 1.0. (See
|
||||
// accompanying file LICENSE_1_0.txt or copy at
|
||||
// http://www.boost.org/LICENSE_1_0.txt)
|
||||
|
||||
#include <vector>
|
||||
#include <string>
|
||||
#include <memory>
|
||||
#include <climits>
|
||||
#include <iostream>
|
||||
#include <cassert>
|
||||
#include <stdlib.h> // for rand(). Would use cstdlib but VC6.4 doesn't put it in std::
|
||||
#include <list>
|
||||
#include <algorithm>
|
||||
#include <boost/detail/binary_search.hpp>
|
||||
#include <boost/detail/workaround.hpp>
|
||||
#include <cstddef>
|
||||
|
||||
#if defined(__SGI_STL_PORT) ? defined(__SGI_STL_OWN_IOSTREAMS) : (!defined(__GNUC__) || __GNUC__ > 2)
|
||||
# define USE_SSTREAM
|
||||
#endif
|
||||
|
||||
#ifdef USE_SSTREAM
|
||||
# include <sstream>
|
||||
#else
|
||||
# include <strstream>
|
||||
#endif
|
||||
|
||||
namespace {
|
||||
|
||||
// In order to get ADL to find the comparison operators defined below, they have
|
||||
struct mystring : std::string
|
||||
{
|
||||
typedef std::string base;
|
||||
|
||||
mystring(std::string const& x)
|
||||
: base(x) {}
|
||||
};
|
||||
|
||||
typedef std::vector<mystring> string_vector;
|
||||
|
||||
const std::size_t sequence_length = 1000;
|
||||
|
||||
unsigned random_number()
|
||||
{
|
||||
return static_cast<unsigned>(::rand()) % sequence_length;
|
||||
}
|
||||
|
||||
# ifndef USE_SSTREAM
|
||||
class unfreezer {
|
||||
public:
|
||||
unfreezer(std::ostrstream& s) : m_stream(s) {}
|
||||
~unfreezer() { m_stream.freeze(false); }
|
||||
private:
|
||||
std::ostrstream& m_stream;
|
||||
};
|
||||
# endif
|
||||
|
||||
template <class T>
|
||||
void push_back_random_number_string(T& seq)
|
||||
{
|
||||
unsigned value = random_number();
|
||||
# if defined(__SGI_STL_PORT) ? defined(__SGI_STL_OWN_IOSTREAMS) : (!defined(__GNUC__) || __GNUC__ > 2)
|
||||
std::ostringstream s;
|
||||
s << value;
|
||||
seq.push_back(s.str());
|
||||
# else
|
||||
std::ostrstream s;
|
||||
auto unfreezer unfreeze(s);
|
||||
s << value << char(0);
|
||||
seq.push_back(std::string(s.str()));
|
||||
# endif
|
||||
}
|
||||
|
||||
inline unsigned to_int(unsigned x) { return x; }
|
||||
inline unsigned to_int(const std::string& x) { return atoi(x.c_str()); }
|
||||
|
||||
struct cmp
|
||||
{
|
||||
template <class A1, class A2>
|
||||
inline bool operator()(const A1& a1, const A2& a2) const
|
||||
{
|
||||
return to_int(a1) < to_int(a2);
|
||||
}
|
||||
};
|
||||
|
||||
inline bool operator<(const mystring& x, const unsigned y)
|
||||
{
|
||||
return to_int(x) < y;
|
||||
}
|
||||
|
||||
inline bool operator<(const unsigned y, const mystring& x)
|
||||
{
|
||||
return y < to_int(x);
|
||||
}
|
||||
|
||||
template <class T>
|
||||
void sort_by_value(T& x);
|
||||
|
||||
template <class T>
|
||||
void sort_by_value_(T& v, long)
|
||||
{
|
||||
std::sort(v.begin(), v.end(), cmp());
|
||||
}
|
||||
|
||||
template <class T>
|
||||
void random_sorted_sequence(T& seq)
|
||||
{
|
||||
seq.clear();
|
||||
for (std::size_t i = 0; i < sequence_length; ++i)
|
||||
{
|
||||
push_back_random_number_string(seq);
|
||||
}
|
||||
sort_by_value(seq);
|
||||
}
|
||||
|
||||
template <class T, class A>
|
||||
void sort_by_value_(std::list<T,A>& l, int)
|
||||
{
|
||||
# if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1) && !defined(__SGI_STL_PORT)
|
||||
// VC6's standard lib doesn't have a template member function for list::sort()
|
||||
std::vector<T> seq;
|
||||
seq.reserve(sequence_length);
|
||||
std::copy(l.begin(), l.end(), std::back_inserter(seq));
|
||||
sort_by_value(seq);
|
||||
std::copy(seq.begin(), seq.end(), l.begin());
|
||||
# else
|
||||
l.sort(cmp());
|
||||
# endif
|
||||
}
|
||||
|
||||
template <class T>
|
||||
void sort_by_value(T& x)
|
||||
{
|
||||
(sort_by_value_)(x, 1);
|
||||
}
|
||||
|
||||
// A way to select the comparisons with/without a Compare parameter for testing.
|
||||
template <class Compare> struct searches
|
||||
{
|
||||
template <class Iterator, class Key>
|
||||
static Iterator lower_bound(Iterator start, Iterator finish, Key key, Compare cmp)
|
||||
{ return boost::detail::lower_bound(start, finish, key, cmp); }
|
||||
|
||||
template <class Iterator, class Key>
|
||||
static Iterator upper_bound(Iterator start, Iterator finish, Key key, Compare cmp)
|
||||
{ return boost::detail::upper_bound(start, finish, key, cmp); }
|
||||
|
||||
template <class Iterator, class Key>
|
||||
static std::pair<Iterator, Iterator> equal_range(Iterator start, Iterator finish, Key key, Compare cmp)
|
||||
{ return boost::detail::equal_range(start, finish, key, cmp); }
|
||||
|
||||
template <class Iterator, class Key>
|
||||
static bool binary_search(Iterator start, Iterator finish, Key key, Compare cmp)
|
||||
{ return boost::detail::binary_search(start, finish, key, cmp); }
|
||||
};
|
||||
|
||||
struct no_compare {};
|
||||
|
||||
template <> struct searches<no_compare>
|
||||
{
|
||||
template <class Iterator, class Key>
|
||||
static Iterator lower_bound(Iterator start, Iterator finish, Key key, no_compare)
|
||||
{ return boost::detail::lower_bound(start, finish, key); }
|
||||
|
||||
template <class Iterator, class Key>
|
||||
static Iterator upper_bound(Iterator start, Iterator finish, Key key, no_compare)
|
||||
{ return boost::detail::upper_bound(start, finish, key); }
|
||||
|
||||
template <class Iterator, class Key>
|
||||
static std::pair<Iterator, Iterator> equal_range(Iterator start, Iterator finish, Key key, no_compare)
|
||||
{ return boost::detail::equal_range(start, finish, key); }
|
||||
|
||||
template <class Iterator, class Key>
|
||||
static bool binary_search(Iterator start, Iterator finish, Key key, no_compare)
|
||||
{ return boost::detail::binary_search(start, finish, key); }
|
||||
};
|
||||
|
||||
template <class Sequence, class Compare>
|
||||
void test_loop(Sequence& x, Compare cmp, unsigned long test_count)
|
||||
{
|
||||
typedef typename Sequence::const_iterator const_iterator;
|
||||
|
||||
for (unsigned long i = 0; i < test_count; ++i)
|
||||
{
|
||||
random_sorted_sequence(x);
|
||||
const const_iterator start = x.begin();
|
||||
const const_iterator finish = x.end();
|
||||
|
||||
unsigned key = random_number();
|
||||
const const_iterator l = searches<Compare>::lower_bound(start, finish, key, cmp);
|
||||
const const_iterator u = searches<Compare>::upper_bound(start, finish, key, cmp);
|
||||
|
||||
bool found_l = false;
|
||||
bool found_u = false;
|
||||
std::size_t index = 0;
|
||||
std::size_t count = 0;
|
||||
unsigned last_value = 0;
|
||||
for (const_iterator p = start; p != finish; ++p)
|
||||
{
|
||||
if (p == l)
|
||||
found_l = true;
|
||||
|
||||
if (p == u)
|
||||
{
|
||||
assert(found_l);
|
||||
found_u = true;
|
||||
}
|
||||
|
||||
unsigned value = to_int(*p);
|
||||
assert(value >= last_value);
|
||||
last_value = value;
|
||||
|
||||
if (!found_l)
|
||||
{
|
||||
++index;
|
||||
assert(to_int(*p) < key);
|
||||
}
|
||||
else if (!found_u)
|
||||
{
|
||||
++count;
|
||||
assert(to_int(*p) == key);
|
||||
}
|
||||
else
|
||||
assert(to_int(*p) > key);
|
||||
}
|
||||
assert(found_l || l == finish);
|
||||
assert(found_u || u == finish);
|
||||
|
||||
std::pair<const_iterator, const_iterator>
|
||||
range = searches<Compare>::equal_range(start, finish, key, cmp);
|
||||
assert(range.first == l);
|
||||
assert(range.second == u);
|
||||
|
||||
bool found = searches<Compare>::binary_search(start, finish, key, cmp);
|
||||
assert(found == (u != l));
|
||||
std::cout << "found " << count << " copies of " << key << " at index " << index << "\n";
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
string_vector x;
|
||||
std::cout << "=== testing random-access iterators with <: ===\n";
|
||||
test_loop(x, no_compare(), 25);
|
||||
std::cout << "=== testing random-access iterators with compare: ===\n";
|
||||
test_loop(x, cmp(), 25);
|
||||
|
||||
std::list<mystring> y;
|
||||
std::cout << "=== testing bidirectional iterators with <: ===\n";
|
||||
test_loop(y, no_compare(), 25);
|
||||
std::cout << "=== testing bidirectional iterators with compare: ===\n";
|
||||
test_loop(y, cmp(), 25);
|
||||
std::cerr << "******TEST PASSED******\n";
|
||||
return 0;
|
||||
}
|
||||
@ -21,7 +21,6 @@ test-suite utility
|
||||
[ run ../addressof_test.cpp ]
|
||||
[ run ../addressof_test2.cpp ]
|
||||
[ run ../base_from_member_test.cpp ]
|
||||
[ run ../binary_search_test.cpp ]
|
||||
[ run ../binary_test.cpp ]
|
||||
[ run ../call_traits_test.cpp : -u ]
|
||||
[ compile-fail ../checked_delete_test.cpp ]
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user