erase_after_one.pass.cpp [plain text]
#include <forward_list>
#include <cassert>
int main()
{
{
typedef int T;
typedef std::forward_list<T> C;
const T t[] = {0, 1, 2, 3, 4};
C c(std::begin(t), std::end(t));
C::iterator i = c.erase_after(next(c.cbefore_begin(), 4));
assert(i == c.end());
assert(distance(c.begin(), c.end()) == 4);
assert(*next(c.begin(), 0) == 0);
assert(*next(c.begin(), 1) == 1);
assert(*next(c.begin(), 2) == 2);
assert(*next(c.begin(), 3) == 3);
i = c.erase_after(next(c.cbefore_begin(), 0));
assert(i == c.begin());
assert(distance(c.begin(), c.end()) == 3);
assert(*next(c.begin(), 0) == 1);
assert(*next(c.begin(), 1) == 2);
assert(*next(c.begin(), 2) == 3);
i = c.erase_after(next(c.cbefore_begin(), 1));
assert(i == next(c.begin()));
assert(distance(c.begin(), c.end()) == 2);
assert(*next(c.begin(), 0) == 1);
assert(*next(c.begin(), 1) == 3);
i = c.erase_after(next(c.cbefore_begin(), 1));
assert(i == c.end());
assert(distance(c.begin(), c.end()) == 1);
assert(*next(c.begin(), 0) == 1);
i = c.erase_after(next(c.cbefore_begin(), 0));
assert(i == c.begin());
assert(i == c.end());
assert(distance(c.begin(), c.end()) == 0);
}
}