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104 lines
2.8 KiB
104 lines
2.8 KiB
4 months ago
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//===----------------------------------------------------------------------===//
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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_view>
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// size_type copy(charT* s, size_type n, size_type pos = 0) const;
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// Throws: out_of_range if pos > size().
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// Remarks: Let rlen be the smaller of n and size() - pos.
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// Requires: [s, s+rlen) is a valid range.
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// Effects: Equivalent to std::copy_n(begin() + pos, rlen, s).
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// Returns: rlen.
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#include <string_view>
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#include <algorithm>
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#include <cassert>
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#include <stdexcept>
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#include "test_macros.h"
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template<typename CharT>
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void test1 ( std::basic_string_view<CharT> sv, size_t n, size_t pos ) {
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const size_t rlen = std::min ( n, sv.size() - pos );
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CharT *dest1 = new CharT [rlen + 1]; dest1[rlen] = 0;
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CharT *dest2 = new CharT [rlen + 1]; dest2[rlen] = 0;
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if (pos > sv.size()) {
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#ifndef TEST_HAS_NO_EXCEPTIONS
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try {
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sv.copy(dest1, n, pos);
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assert(false);
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} catch (const std::out_of_range&) {
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} catch (...) {
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assert(false);
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}
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#endif
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} else {
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sv.copy(dest1, n, pos);
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std::copy_n(sv.begin() + pos, rlen, dest2);
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for ( size_t i = 0; i <= rlen; ++i )
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assert ( dest1[i] == dest2[i] );
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}
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delete [] dest1;
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delete [] dest2;
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}
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template<typename CharT>
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void test ( const CharT *s ) {
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typedef std::basic_string_view<CharT> string_view_t;
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string_view_t sv1 ( s );
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test1(sv1, 0, 0);
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test1(sv1, 1, 0);
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test1(sv1, 20, 0);
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test1(sv1, sv1.size(), 0);
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test1(sv1, 20, string_view_t::npos);
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test1(sv1, 0, 3);
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test1(sv1, 2, 3);
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test1(sv1, 100, 3);
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test1(sv1, 100, string_view_t::npos);
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test1(sv1, sv1.size(), string_view_t::npos);
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test1(sv1, sv1.size() + 1, 0);
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test1(sv1, sv1.size() + 1, 1);
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test1(sv1, sv1.size() + 1, string_view_t::npos);
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}
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int main () {
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test ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
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test ( "ABCDE");
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test ( "a" );
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test ( "" );
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test ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
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test ( L"ABCDE" );
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test ( L"a" );
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test ( L"" );
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#if TEST_STD_VER >= 11
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test ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
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test ( u"ABCDE" );
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test ( u"a" );
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test ( u"" );
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test ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
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test ( U"ABCDE" );
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test ( U"a" );
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test ( U"" );
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#endif
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}
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