55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// void resize(size_type n);
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#include <string>
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#include <stdexcept>
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#include <cassert>
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template <class S>
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void
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test(S s, typename S::size_type n, S expected)
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{
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try
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{
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s.resize(n);
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assert(s.__invariants());
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assert(n <= s.max_size());
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assert(s == expected);
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}
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catch (std::length_error&)
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{
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assert(n > s.max_size());
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}
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}
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int main()
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{
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typedef std::string S;
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test(S(), 0, S());
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test(S(), 1, S(1, '\0'));
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test(S(), 10, S(10, '\0'));
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test(S(), 100, S(100, '\0'));
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test(S("12345"), 0, S());
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test(S("12345"), 2, S("12"));
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test(S("12345"), 5, S("12345"));
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test(S("12345"), 15, S("12345\0\0\0\0\0\0\0\0\0\0", 15));
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test(S("12345678901234567890123456789012345678901234567890"), 0, S());
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test(S("12345678901234567890123456789012345678901234567890"), 10,
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S("1234567890"));
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test(S("12345678901234567890123456789012345678901234567890"), 50,
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S("12345678901234567890123456789012345678901234567890"));
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test(S("12345678901234567890123456789012345678901234567890"), 60,
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S("12345678901234567890123456789012345678901234567890\0\0\0\0\0\0\0\0\0\0", 60));
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test(S(), S::npos, S("not going to happen"));
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}
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