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Better 'is_permutation' implementation, tests

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[SVN r84389]
This commit is contained in:
Marshall Clow
2013-05-20 15:37:50 +00:00
parent a4b907197e
commit b9d89c559b
5 changed files with 414 additions and 341 deletions
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220
test/mismatch_test.cpp
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@ -24,9 +24,9 @@ bool never_eq ( const T&, const T& ) { return false; }
namespace ba = boost::algorithm;
template <typename Iter1, typename Iter2>
bool iter_eq ( std::pair<Iter1, Iter1> pr, Iter1 first, Iter2 second ) {
return pr.first == first && pr.second == second;
}
bool iter_eq ( std::pair<Iter1, Iter2> pr, Iter1 first, Iter2 second ) {
return pr.first == first && pr.second == second;
}
void test_mismatch ()
{
@ -35,123 +35,129 @@ void test_mismatch ()
const int sz = sizeof (num)/sizeof(num[0]);
// No mismatch for empty sequences
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num),
input_iterator<int *>(num), input_iterator<int *>(num)),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num),
input_iterator<int *>(num), input_iterator<int *>(num),
never_eq<int> ),
input_iterator<int *>(num), input_iterator<int *>(num)));
// No mismatch for empty sequences
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num),
input_iterator<int *>(num), input_iterator<int *>(num)),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num),
input_iterator<int *>(num), input_iterator<int *>(num),
never_eq<int> ),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num), random_access_iterator<int *>(num),
random_access_iterator<int *>(num), random_access_iterator<int *>(num),
never_eq<int> ),
random_access_iterator<int *>(num), random_access_iterator<int *>(num)));
// Empty vs. non-empty mismatch immediately
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num),
input_iterator<int *>(num), input_iterator<int *>(num + 1)),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num), random_access_iterator<int *>(num),
random_access_iterator<int *>(num), random_access_iterator<int *>(num),
never_eq<int> ),
random_access_iterator<int *>(num), random_access_iterator<int *>(num)));
// Empty vs. non-empty mismatch immediately
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num),
input_iterator<int *>(num), input_iterator<int *>(num + 1)),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + 2),
input_iterator<int *>(num), input_iterator<int *>(num)),
input_iterator<int *>(num + 1), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num + 2),
random_access_iterator<int *>(num), random_access_iterator<int *>(num)),
random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + 2),
input_iterator<int *>(num), input_iterator<int *>(num)),
input_iterator<int *>(num + 1), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num + 2),
random_access_iterator<int *>(num), random_access_iterator<int *>(num)),
random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num)));
// Single element sequences are equal if they contain the same value
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num), input_iterator<int *>(num + 1)),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
// Single element sequences are equal if they contain the same value
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num), input_iterator<int *>(num + 1)),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num), input_iterator<int *>(num + 1),
eq<int> ),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
eq<int> ),
random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num + 1)));
eq<int> ),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
eq<int> ),
random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num), input_iterator<int *>(num + 1),
never_eq<int> ),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
never_eq<int> ),
random_access_iterator<int *>(num), random_access_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num), input_iterator<int *>(num + 1),
never_eq<int> ),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
random_access_iterator<int *>(num), random_access_iterator<int *>(num + 1),
never_eq<int> ),
random_access_iterator<int *>(num), random_access_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2),
eq<int> ),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + 1),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2),
eq<int> ),
input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 2), input_iterator<int *>(num + 3),
input_iterator<int *>(num), input_iterator<int *>(num + 1)),
input_iterator<int *>(num + 2), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 2), input_iterator<int *>(num + 3),
input_iterator<int *>(num), input_iterator<int *>(num + 1),
eq<int> ),
input_iterator<int *>(num + 2), input_iterator<int *>(num)));
// Identical long sequences are equal.
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz)),
input_iterator<int *>(num + sz), input_iterator<int *>(num + sz)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 2), input_iterator<int *>(num + 3),
input_iterator<int *>(num), input_iterator<int *>(num + 1)),
input_iterator<int *>(num + 2), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 2), input_iterator<int *>(num + 3),
input_iterator<int *>(num), input_iterator<int *>(num + 1),
eq<int> ),
input_iterator<int *>(num + 2), input_iterator<int *>(num)));
// Identical long sequences are equal.
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz)),
input_iterator<int *>(num + sz), input_iterator<int *>(num + sz)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz),
eq<int> ),
input_iterator<int *>(num + sz), input_iterator<int *>(num + sz)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz),
eq<int> ),
input_iterator<int *>(num + sz), input_iterator<int *>(num + sz)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz),
never_eq<int> ),
input_iterator<int *>(num), input_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz),
never_eq<int> ),
input_iterator<int *>(num), input_iterator<int *>(num)));
// different sequences are different
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz)),
input_iterator<int *>(num + 2), input_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num), input_iterator<int *>(num + sz),
random_access_iterator<int *>(num), random_access_iterator<int *>(num + sz),
never_eq<int> ),
input_iterator<int *>(num), random_access_iterator<int *>(num)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz),
eq<int> ),
input_iterator<int *>(num + 2), input_iterator<int *>(num + 1)));
// different sequences are different
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz)),
input_iterator<int *>(num + 2), input_iterator<int *>(num + 1)));
BOOST_CHECK ( iter_eq (
ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + sz),
input_iterator<int *>(num), input_iterator<int *>(num + sz),
eq<int> ),
input_iterator<int *>(num + 2), input_iterator<int *>(num + 1)));
}