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'unlabeled-1.4.2'.

[SVN r9366]
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nobody
2001-02-28 21:39:58 +00:00
commit 70c7469f82
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#ifndef BOOST_ITERATOR_TESTS_HPP
#define BOOST_ITERATOR_TESTS_HPP
// This is meant to be the beginnings of a comprehensive, generic
// test suite for STL concepts such as iterators and containers.
#include <iterator>
#include <assert.h>
namespace boost {
// use this for the value type
struct dummyT {
dummyT() { }
dummyT(int x) : m_x(x) { }
int foo() const { return m_x; }
bool operator==(const dummyT& d) const { return m_x == d.m_x; }
int m_x;
};
// Tests whether type Iterator satisfies the requirements for a
// TrivialIterator.
// Preconditions: i != j, *i == val
template <class Iterator, class T>
void trivial_iterator_test(const Iterator i, const Iterator j, T val)
{
Iterator k;
assert(i == i);
assert(j == j);
assert(i != j);
#ifdef BOOST_NO_STD_ITERATOR_TRAITS
T v = *i;
#else
typename std::iterator_traits<Iterator>::value_type v = *i;
#endif
assert(v == val);
#if 0
// hmm, this will give a warning for transform_iterator... perhaps
// this should be separated out into a stand-alone test since there
// are several situations where it can't be used, like for
// integer_range::iterator.
assert(v == i->foo());
#endif
k = i;
assert(k == k);
assert(k == i);
assert(k != j);
assert(*k == val);
}
// Preconditions: i != j
template <class Iterator, class T>
void mutable_trivial_iterator_test(const Iterator i, const Iterator j, T val)
{
*i = val;
trivial_iterator_test(i, j, val);
}
// Preconditions: *i == v1, *++i == v2
template <class Iterator, class T>
void input_iterator_test(Iterator i, T v1, T v2)
{
Iterator i1 = i, i2 = i;
assert(i == i1++);
assert(i != ++i2);
trivial_iterator_test(i, i1, v1);
trivial_iterator_test(i, i2, v1);
++i;
assert(i == i1);
assert(i == i2);
++i1;
++i2;
trivial_iterator_test(i, i1, v2);
trivial_iterator_test(i, i2, v2);
}
// how to test output iterator?
template <class Iterator, class T>
void forward_iterator_test(Iterator i, T v1, T v2)
{
input_iterator_test(i, v1, v2);
}
// Preconditions: *i == v1, *++i == v2
template <class Iterator, class T>
void bidirectional_iterator_test(Iterator i, T v1, T v2)
{
input_iterator_test(i, v1, v2);
++i;
Iterator i1 = i, i2 = i;
assert(i == i1--);
assert(i != --i2);
trivial_iterator_test(i, i1, v2);
trivial_iterator_test(i, i2, v2);
--i;
assert(i == i1);
assert(i == i2);
--i1;
--i2;
trivial_iterator_test(i, i1, v1);
trivial_iterator_test(i, i2, v1);
}
// mutable_bidirectional_iterator_test
// Preconditions: [i,i+N) is a valid range
template <class Iterator, class TrueVals>
void random_access_iterator_test(Iterator i, int N, TrueVals vals)
{
bidirectional_iterator_test(i, vals[0], vals[1]);
const Iterator j = i;
int c;
for (c = 0; c < N-1; ++c) {
assert(i == j + c);
assert(*i == vals[c]);
assert(*i == j[c]);
assert(*i == *(j + c));
assert(*i == *(c + j));
++i;
assert(i > j);
assert(i >= j);
assert(j <= i);
assert(j < i);
}
Iterator k = j + N - 1;
for (c = 0; c < N-1; ++c) {
assert(i == k - c);
assert(*i == vals[N - 1 - c]);
assert(*i == j[N - 1 - c]);
Iterator q = k - c;
assert(*i == *q);
assert(i > j);
assert(i >= j);
assert(j <= i);
assert(j < i);
--i;
}
}
// Precondition: i != j
template <class Iterator, class ConstIterator>
void const_nonconst_iterator_test(Iterator i, ConstIterator j)
{
assert(i != j);
assert(j != i);
ConstIterator k(i);
assert(k == i);
assert(i == k);
k = i;
assert(k == i);
assert(i == k);
}
} // namespace boost
#endif // BOOST_ITERATOR_TESTS_HPP