bc8d3f97eb
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
172 lines
6.0 KiB
C++
172 lines
6.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// basic_string<charT,traits,Allocator>&
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// erase(size_type pos = 0, size_type n = npos);
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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 pos, typename S::size_type n, S expected)
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{
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typename S::size_type old_size = s.size();
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S s0 = s;
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try
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{
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s.erase(pos, n);
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assert(s.__invariants());
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assert(pos <= old_size);
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assert(s == expected);
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}
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catch (std::out_of_range&)
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{
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assert(pos > old_size);
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assert(s == s0);
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}
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}
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template <class S>
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void
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test(S s, typename S::size_type pos, S expected)
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{
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typename S::size_type old_size = s.size();
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S s0 = s;
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try
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{
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s.erase(pos);
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assert(s.__invariants());
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assert(pos <= old_size);
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assert(s == expected);
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}
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catch (std::out_of_range&)
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{
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assert(pos > old_size);
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assert(s == s0);
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}
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}
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template <class S>
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void
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test(S s, S expected)
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{
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s.erase();
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assert(s.__invariants());
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assert(s == expected);
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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, 0, S(""));
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test(S(""), 0, 1, S(""));
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test(S(""), 1, 0, S("can't happen"));
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test(S("abcde"), 0, 0, S("abcde"));
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test(S("abcde"), 0, 1, S("bcde"));
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test(S("abcde"), 0, 2, S("cde"));
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test(S("abcde"), 0, 4, S("e"));
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test(S("abcde"), 0, 5, S(""));
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test(S("abcde"), 0, 6, S(""));
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test(S("abcde"), 1, 0, S("abcde"));
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test(S("abcde"), 1, 1, S("acde"));
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test(S("abcde"), 1, 2, S("ade"));
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test(S("abcde"), 1, 3, S("ae"));
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test(S("abcde"), 1, 4, S("a"));
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test(S("abcde"), 1, 5, S("a"));
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test(S("abcde"), 2, 0, S("abcde"));
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test(S("abcde"), 2, 1, S("abde"));
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test(S("abcde"), 2, 2, S("abe"));
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test(S("abcde"), 2, 3, S("ab"));
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test(S("abcde"), 2, 4, S("ab"));
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test(S("abcde"), 4, 0, S("abcde"));
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test(S("abcde"), 4, 1, S("abcd"));
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test(S("abcde"), 4, 2, S("abcd"));
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test(S("abcde"), 5, 0, S("abcde"));
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test(S("abcde"), 5, 1, S("abcde"));
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test(S("abcde"), 6, 0, S("can't happen"));
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test(S("abcdefghij"), 0, 0, S("abcdefghij"));
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test(S("abcdefghij"), 0, 1, S("bcdefghij"));
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test(S("abcdefghij"), 0, 5, S("fghij"));
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test(S("abcdefghij"), 0, 9, S("j"));
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test(S("abcdefghij"), 0, 10, S(""));
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test(S("abcdefghij"), 0, 11, S(""));
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test(S("abcdefghij"), 1, 0, S("abcdefghij"));
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test(S("abcdefghij"), 1, 1, S("acdefghij"));
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test(S("abcdefghij"), 1, 4, S("afghij"));
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test(S("abcdefghij"), 1, 8, S("aj"));
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test(S("abcdefghij"), 1, 9, S("a"));
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test(S("abcdefghij"), 1, 10, S("a"));
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test(S("abcdefghij"), 5, 0, S("abcdefghij"));
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test(S("abcdefghij"), 5, 1, S("abcdeghij"));
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test(S("abcdefghij"), 5, 2, S("abcdehij"));
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test(S("abcdefghij"), 5, 4, S("abcdej"));
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test(S("abcdefghij"), 5, 5, S("abcde"));
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test(S("abcdefghij"), 5, 6, S("abcde"));
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test(S("abcdefghij"), 9, 0, S("abcdefghij"));
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test(S("abcdefghij"), 9, 1, S("abcdefghi"));
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test(S("abcdefghij"), 9, 2, S("abcdefghi"));
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test(S("abcdefghij"), 10, 0, S("abcdefghij"));
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test(S("abcdefghij"), 10, 1, S("abcdefghij"));
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test(S("abcdefghij"), 11, 0, S("can't happen"));
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test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 0, 1, S("bcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 0, 10, S("klmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 0, 19, S("t"));
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test(S("abcdefghijklmnopqrst"), 0, 20, S(""));
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test(S("abcdefghijklmnopqrst"), 0, 21, S(""));
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test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 1, 1, S("acdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 1, 9, S("aklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 1, 18, S("at"));
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test(S("abcdefghijklmnopqrst"), 1, 19, S("a"));
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test(S("abcdefghijklmnopqrst"), 1, 20, S("a"));
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test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijlmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijpqrst"));
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test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijt"));
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test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"));
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test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"));
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test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrs"));
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test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrs"));
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test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 21, 0, S("can't happen"));
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test(S(""), 0, S(""));
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test(S(""), 1, S("can't happen"));
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test(S("abcde"), 0, S(""));
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test(S("abcde"), 1, S("a"));
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test(S("abcde"), 2, S("ab"));
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test(S("abcde"), 4, S("abcd"));
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test(S("abcde"), 5, S("abcde"));
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test(S("abcde"), 6, S("can't happen"));
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test(S("abcdefghij"), 0, S(""));
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test(S("abcdefghij"), 1, S("a"));
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test(S("abcdefghij"), 5, S("abcde"));
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test(S("abcdefghij"), 9, S("abcdefghi"));
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test(S("abcdefghij"), 10, S("abcdefghij"));
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test(S("abcdefghij"), 11, S("can't happen"));
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test(S("abcdefghijklmnopqrst"), 0, S(""));
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test(S("abcdefghijklmnopqrst"), 1, S("a"));
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test(S("abcdefghijklmnopqrst"), 10, S("abcdefghij"));
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test(S("abcdefghijklmnopqrst"), 19, S("abcdefghijklmnopqrs"));
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test(S("abcdefghijklmnopqrst"), 20, S("abcdefghijklmnopqrst"));
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test(S("abcdefghijklmnopqrst"), 21, S("can't happen"));
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test(S(""), S(""));
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test(S("abcde"), S(""));
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test(S("abcdefghij"), S(""));
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test(S("abcdefghijklmnopqrst"), S(""));
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}
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