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/*
Copyright (c) Marshall Clow 2011-2012.
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)
For more information, see http://www.boost.org
*/
#include <iostream>
#include <boost/config.hpp>
#include <boost/algorithm/cxx11/find_if_not.hpp>
#define BOOST_TEST_MAIN
#include <boost/test/unit_test.hpp>
#include <string>
#include <vector>
#include <list>
namespace ba = boost::algorithm;
// namespace ba = boost;
BOOST_CXX14_CONSTEXPR bool is_true ( int v ) { return true; }
BOOST_CXX14_CONSTEXPR bool is_false ( int v ) { return false; }
BOOST_CXX14_CONSTEXPR bool is_not_three ( int v ) { return v != 3; }
BOOST_CXX14_CONSTEXPR bool check_constexpr() {
int in_data[] = {1, 2, 3, 4, 5};
bool res = true;
const int* from = in_data;
const int* to = in_data + 5;
const int* start = ba::find_if_not (from, to, is_false); // stops on first
res = (res && start == from);
const int* end = ba::find_if_not(from, to, is_true); // stops on the end
res = (res && end == to);
const int* three = ba::find_if_not(from, to, is_not_three); // stops on third element
res = (res && three == in_data + 2);
return res;
}
template <typename Container>
typename Container::iterator offset_to_iter ( Container &v, int offset ) {
typename Container::iterator retval;
if ( offset >= 0 ) {
retval = v.begin ();
std::advance ( retval, offset );
}
else {
retval = v.end ();
std::advance ( retval, offset + 1 );
}
return retval;
}
template <typename Container, typename Predicate>
void test_sequence ( Container &v, Predicate comp, int expected ) {
typename Container::iterator res, exp;
res = ba::find_if_not ( v.begin (), v.end (), comp );
exp = offset_to_iter ( v, expected );
std::cout << "Expected(1): " << std::distance ( v.begin (), exp )
<< ", got: " << std::distance ( v.begin (), res ) << std::endl;
BOOST_CHECK ( exp == res );
}
template <typename T>
struct less_than {
public:
less_than ( T foo ) : val ( foo ) {}
less_than ( const less_than &rhs ) : val ( rhs.val ) {}
bool operator () ( const T &v ) const { return v < val; }
private:
less_than ();
less_than operator = ( const less_than &rhs );
T val;
};
void test_sequence1 () {
std::vector<int> v;
v.clear ();
for ( int i = 5; i < 15; ++i )
v.push_back ( i );
test_sequence ( v, less_than<int>(3), 0 ); // no elements
test_sequence ( v, less_than<int>(6), 1 ); // only the first element
test_sequence ( v, less_than<int>(10), 5 );
test_sequence ( v, less_than<int>(99), -1 ); // all elements satisfy
// With bidirectional iterators.
std::list<int> l;
for ( int i = 5; i < 15; ++i )
l.push_back ( i );
test_sequence ( l, less_than<int>(3), 0 ); // no elements
test_sequence ( l, less_than<int>(6), 1 ); // only the first element
test_sequence ( l, less_than<int>(10), 5 );
test_sequence ( l, less_than<int>(99), -1 ); // all elements satisfy
}
BOOST_AUTO_TEST_CASE( test_main )
{
test_sequence1 ();
}
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