max_size.pass.cpp (1591B)
1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <unordered_map> 11 12 // class unordered_multimap 13 14 // size_type max_size() const; 15 16 #include <cassert> 17 #include <limits> 18 #include <type_traits> 19 #include <unordered_map> 20 21 #include "test_allocator.h" 22 #include "test_macros.h" 23 24 int main() 25 { 26 typedef std::pair<const int, int> KV; 27 { 28 typedef limited_allocator<KV, 10> A; 29 typedef std::unordered_multimap<int, int, std::hash<int>, 30 std::equal_to<int>, A> 31 C; 32 C c; 33 assert(c.max_size() <= 10); 34 LIBCPP_ASSERT(c.max_size() == 10); 35 } 36 { 37 typedef limited_allocator<KV, (size_t)-1> A; 38 typedef std::unordered_multimap<int, int, std::hash<int>, 39 std::equal_to<int>, A> 40 C; 41 const C::size_type max_dist = 42 static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max()); 43 C c; 44 assert(c.max_size() <= max_dist); 45 LIBCPP_ASSERT(c.max_size() == max_dist); 46 } 47 { 48 typedef std::unordered_multimap<char, int> C; 49 const C::size_type max_dist = 50 static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max()); 51 C c; 52 assert(c.max_size() <= max_dist); 53 assert(c.max_size() <= alloc_max_size(c.get_allocator())); 54 } 55 }