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5a9ebbf0d9
We fixed incorrect behavior of input streams in r357775 and tests were added accordingly. However, older versions of macOS don't have the change in the dylib yet, so the tests fail on those platforms. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@357794 91177308-0d34-0410-b5e6-96231b3b80d8
111 lines
2.8 KiB
C++
111 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// XFAIL: with_system_cxx_lib=macosx10.14
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// XFAIL: with_system_cxx_lib=macosx10.13
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// XFAIL: with_system_cxx_lib=macosx10.12
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// XFAIL: with_system_cxx_lib=macosx10.11
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// XFAIL: with_system_cxx_lib=macosx10.10
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// XFAIL: with_system_cxx_lib=macosx10.9
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// <istream>
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// int_type peek();
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#include <istream>
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#include <cassert>
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#include "test_macros.h"
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template <class CharT>
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struct testbuf
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: public std::basic_streambuf<CharT>
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{
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typedef std::basic_string<CharT> string_type;
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typedef std::basic_streambuf<CharT> base;
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private:
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string_type str_;
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public:
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testbuf() {}
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testbuf(const string_type& str)
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: str_(str)
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{
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base::setg(const_cast<CharT*>(str_.data()),
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const_cast<CharT*>(str_.data()),
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const_cast<CharT*>(str_.data()) + str_.size());
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}
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CharT* eback() const {return base::eback();}
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CharT* gptr() const {return base::gptr();}
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CharT* egptr() const {return base::egptr();}
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};
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int main(int, char**)
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{
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{
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testbuf<char> sb(" 1\n2345\n6");
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std::istream is(&sb);
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assert(is.peek() == ' ');
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assert(!is.eof());
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assert(!is.fail());
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assert(is.gcount() == 0);
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is.get();
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assert(is.peek() == '1');
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assert(!is.eof());
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assert(!is.fail());
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assert(is.gcount() == 0);
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}
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{
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testbuf<wchar_t> sb(L" 1\n2345\n6");
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std::wistream is(&sb);
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assert(is.peek() == L' ');
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assert(!is.eof());
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assert(!is.fail());
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assert(is.gcount() == 0);
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is.get();
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assert(is.peek() == L'1');
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assert(!is.eof());
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assert(!is.fail());
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assert(is.gcount() == 0);
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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{
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testbuf<char> sb;
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std::basic_istream<char> is(&sb);
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is.exceptions(std::ios_base::eofbit);
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bool threw = false;
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try {
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is.peek();
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} catch (std::ios_base::failure&) {
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threw = true;
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}
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assert(threw);
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assert(!is.bad());
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assert( is.eof());
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assert(!is.fail());
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}
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{
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testbuf<wchar_t> sb;
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std::basic_istream<wchar_t> is(&sb);
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is.exceptions(std::ios_base::eofbit);
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bool threw = false;
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try {
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is.peek();
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} catch (std::ios_base::failure&) {
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threw = true;
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}
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assert(threw);
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assert(!is.bad());
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assert( is.eof());
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assert(!is.fail());
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}
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#endif
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return 0;
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}
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