| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <string> |
| |
| // basic_string<charT,traits,Allocator>& |
| // assign(const basic_string<charT,traits>& str, size_type pos, size_type n); |
| |
| #include <string> |
| #include <stdexcept> |
| #include <cassert> |
| |
| template <class S> |
| void |
| test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected) |
| { |
| try |
| { |
| s.assign(str, pos, n); |
| assert(s.__invariants()); |
| assert(pos <= str.size()); |
| assert(s == expected); |
| } |
| catch (std::out_of_range&) |
| { |
| assert(pos > str.size()); |
| } |
| } |
| |
| int main() |
| { |
| typedef std::string S; |
| test(S(), S(), 0, 0, S()); |
| test(S(), S(), 1, 0, S()); |
| test(S(), S("12345"), 0, 3, S("123")); |
| test(S(), S("12345"), 1, 4, S("2345")); |
| test(S(), S("12345"), 3, 15, S("45")); |
| test(S(), S("12345"), 5, 15, S("")); |
| test(S(), S("12345"), 6, 15, S("not happening")); |
| test(S(), S("12345678901234567890"), 0, 0, S()); |
| test(S(), S("12345678901234567890"), 1, 1, S("2")); |
| test(S(), S("12345678901234567890"), 2, 3, S("345")); |
| test(S(), S("12345678901234567890"), 12, 13, S("34567890")); |
| test(S(), S("12345678901234567890"), 21, 13, S("not happening")); |
| |
| test(S("12345"), S(), 0, 0, S()); |
| test(S("12345"), S("12345"), 2, 2, S("34")); |
| test(S("12345"), S("1234567890"), 0, 100, S("1234567890")); |
| |
| test(S("12345678901234567890"), S(), 0, 0, S()); |
| test(S("12345678901234567890"), S("12345"), 1, 3, S("234")); |
| test(S("12345678901234567890"), S("12345678901234567890"), 5, 10, |
| S("6789012345")); |
| } |