forked from boostorg/utility
110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
/*
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Copyright (c) Marshall Clow 2012-2012.
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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For more information, see http://www.boost.org
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*/
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#include <iostream>
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#include <algorithm>
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#include <string>
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#include <boost/utility/string_ref.hpp>
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#define BOOST_TEST_MAIN
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#include <boost/test/unit_test.hpp>
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typedef boost::string_ref string_ref;
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// Should be equal
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void interop ( const std::string &str, string_ref ref ) {
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// BOOST_CHECK ( str == ref );
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BOOST_CHECK ( str.size () == ref.size ());
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BOOST_CHECK ( std::equal ( str.begin (), str.end (), ref.begin ()));
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BOOST_CHECK ( std::equal ( str.rbegin (), str.rend (), ref.rbegin ()));
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}
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void null_tests ( const char *p ) {
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// All zero-length string-refs should be equal
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string_ref sr1; // NULL, 0
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string_ref sr2 ( NULL, 0 );
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string_ref sr3 ( p, 0 );
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string_ref sr4 ( p );
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sr4.clear ();
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BOOST_CHECK ( sr1 == sr2 );
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BOOST_CHECK ( sr1 == sr3 );
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BOOST_CHECK ( sr2 == sr3 );
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BOOST_CHECK ( sr1 == sr4 );
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}
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// make sure that substrings work just like strings
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void test_substr ( const std::string &str ) {
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const size_t sz = str.size ();
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string_ref ref ( str );
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// Substrings at the end
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for ( size_t i = 0; i <= sz; ++ i )
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interop ( str.substr ( i ), ref.substr ( i ));
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// Substrings at the beginning
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for ( size_t i = 0; i <= sz; ++ i )
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interop ( str.substr ( 0, i ), ref.substr ( 0, i ));
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// All possible substrings
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for ( size_t i = 0; i < sz; ++i )
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for ( size_t j = i; j < sz; ++j )
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interop ( str.substr ( i, j ), ref.substr ( i, j ));
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}
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// make sure that removing prefixes and suffixes work just like strings
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void test_remove ( const std::string &str ) {
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const size_t sz = str.size ();
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std::string work;
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string_ref ref;
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for ( size_t i = 1; i <= sz; ++i ) {
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work = str;
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ref = str;
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while ( ref.size () >= i ) {
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interop ( work, ref );
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work.erase ( 0, i );
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ref.remove_prefix (i);
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}
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}
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for ( size_t i = 1; i < sz; ++ i ) {
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work = str;
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ref = str;
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while ( ref.size () >= i ) {
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interop ( work, ref );
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work.erase ( work.size () - i, i );
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ref.remove_suffix (i);
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}
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}
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}
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const char *test_strings [] = {
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"",
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"1",
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
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"0123456789",
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NULL
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};
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BOOST_AUTO_TEST_CASE( test_main )
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{
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const char **p = &test_strings[0];
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while ( *p != NULL ) {
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interop ( *p, *p );
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test_substr ( *p );
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test_remove ( *p );
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null_tests ( *p );
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p++;
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}
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}
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