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c09116009c
These tests are of the form
try {
action-that-may-throw
assert(!exceptional-condition)
assert(some-other-facts)
} catch (relevant-exception) {
assert(exceptional-condition)
}
Under libcpp-no-exceptions there is still value in verifying
some-other-facts while avoiding the exceptional case. So for these tests
just conditionally check some-other-facts if exceptional-condition is
false. When exception are supported make sure that a true
exceptional-condition throws an exception
Differential Revision: https://reviews.llvm.org/D26136
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@285697 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
2.7 KiB
C++
90 lines
2.7 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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#include "test_macros.h"
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#include "min_allocator.h"
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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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if (n <= s.max_size())
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{
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s.resize(n);
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LIBCPP_ASSERT(s.__invariants());
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assert(s == expected);
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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else
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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(false);
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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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#endif
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}
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int main()
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{
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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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#if TEST_STD_VER >= 11
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{
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typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> 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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#endif
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}
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