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This commit is contained in:
Jose Caban
556
extern/stdcxx/4.2.1/tests/strings/21.string.iterators.cpp
vendored
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556
extern/stdcxx/4.2.1/tests/strings/21.string.iterators.cpp
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/***************************************************************************
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*
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* 21.string.iterators.cpp - string test exercising lib.string.iterators
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*
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* $Id: 21.string.iterators.cpp 648752 2008-04-16 17:01:56Z faridz $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 2006 Rogue Wave Software.
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*
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**************************************************************************/
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#include <string> // for string
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#include <stdexcept> // for out_of_range, length_error
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#include <cstddef> // for size_t
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#include <21.strings.h> // for StringMembers
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#include <driver.h> // for rw_test()
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#include <rw_allocator.h> // for UserAlloc
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#include <rw_char.h> // for rw_expand()
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#include <rw_new.h> // for bad_alloc, replacement operator new
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/**************************************************************************/
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static const char* const exceptions[] = {
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"unknown exception", "bad_alloc", "exception"
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};
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/**************************************************************************/
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// used to exercise
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// begin () and rend ()
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static const StringTestCase
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begin_void_test_cases [] = {
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#undef TEST
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#define TEST(str, res) { \
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__LINE__, -1, -1, -1, -1, -1, \
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str, sizeof (str) - 1, \
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0, 0, 0, res, 0 \
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}
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// +--------------------------------- controlled sequence
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// | +--------------- expected result
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// | |
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// V V
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TEST ("a", 'a' ),
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TEST ("<U0>", '\0'),
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TEST ("abc", 'a' ),
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TEST ("<U0>ab<U0>@2c", '\0'),
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TEST ("a<U0>b<U0>@2c", 'a' ),
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TEST ("a<U0>bc<U0>@2", 'a' ),
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TEST ("x@4096", 'x' ),
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TEST ("last", 'l' )
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};
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/**************************************************************************/
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// used to exercise
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// end () and rbegin ()
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static const StringTestCase
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end_void_test_cases [] = {
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#undef TEST
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#define TEST(str, res) { \
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__LINE__, -1, -1, -1, -1, -1, \
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str, sizeof (str) - 1, \
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0, 0, 0, res, 0 \
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}
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// +--------------------------------- controlled sequence
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// | +--------------- expected result
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// | |
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// V V
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TEST ("a", 'a' ),
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TEST ("<U0>", '\0'),
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TEST ("abc", 'c' ),
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TEST ("<U0>ab<U0>@2c", 'c' ),
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TEST ("a<U0>b<U0>@2c", 'c' ),
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TEST ("a<U0>bc<U0>@2", '\0'),
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TEST ("x@4096", 'x' ),
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TEST ("last", 't' )
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};
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/**************************************************************************/
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// exercises:
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// c_str() and data ()
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static const StringTestCase
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c_str_void_test_cases [] = {
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#undef TEST
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#define TEST(str) { \
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__LINE__, -1, -1, -1, -1, -1, \
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str, sizeof (str) - 1, 0, 0, \
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str, sizeof (str) - 1, 0 \
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}
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// +-------------------------------- controlled sequence
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// |
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// |
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// |
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// |
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// |
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// |
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// |
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// V
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TEST ("ab" ),
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TEST ("" ),
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TEST ("<U0>" ),
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TEST ("abcdefghij" ),
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TEST ("abcdefghi" ),
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TEST ("abbdefghij" ),
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TEST ("abcdeeghij" ),
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TEST ("abcdefghii" ),
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TEST ("bbcdefghij" ),
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TEST ("eeeeeeghij" ),
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TEST ("a" ),
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TEST ("aeeee" ),
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TEST ("bbcdefghij" ),
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TEST ("abcdffghij" ),
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TEST ("abcdefghjj" ),
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TEST ("a<U0>b<U0>@2c" ),
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TEST ("abc<U0>@3" ),
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TEST ("<U0>ab<U0>@2c" ),
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TEST ("a<U0>b" ),
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TEST ("ab<U0>" ),
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TEST ("<U0>ab" ),
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TEST ("x@4096" ),
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TEST ("xx" ),
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TEST ("a@2048b@2048" ),
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TEST ("a@2048cb@2047" ),
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TEST ("last" )
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};
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/**************************************************************************/
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// exercises:
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// get_allocator ()
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static const StringTestCase
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get_allocator_void_test_cases [] = {
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#undef TEST
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#define TEST(str) { \
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__LINE__, -1, -1, -1, -1, -1, \
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str, sizeof (str) - 1, \
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0, 0, 0, 0, 0 \
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}
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// +------------------------------------------ controlled sequence
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// |
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// |
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// |
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// |
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// |
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// |
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// |
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// V
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TEST ("ab" ),
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TEST ("" ),
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TEST ("<U0>" ),
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TEST ("x@4096" ),
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TEST ("a<U0>b" ),
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TEST ("a@2048cb@2047" ),
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TEST ("last" )
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};
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/**************************************************************************/
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template <class charT, class Traits, class Allocator>
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void test_iterators (charT*, Traits*, Allocator*,
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const StringTestCaseData<charT> &tdata)
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{
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typedef std::basic_string <charT, Traits, Allocator> String;
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typedef typename String::iterator StringIter;
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typedef typename String::const_iterator StringCIter;
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typedef typename String::reverse_iterator StringRIter;
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typedef typename String::const_reverse_iterator StringCRIter;
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const StringFunc &func = tdata.func_;
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const StringTestCase &tcase = tdata.tcase_;
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const bool test_iters = func.which_ == StringIds::begin_void
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|| func.which_ == StringIds::begin_const_void
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|| func.which_ == StringIds::end_void
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|| func.which_ == StringIds::end_const_void
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|| func.which_ == StringIds::rbegin_void
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|| func.which_ == StringIds::rbegin_const_void
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|| func.which_ == StringIds::rend_void
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|| func.which_ == StringIds::rend_const_void;
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const bool test_const_iters = func.which_ == StringIds::begin_const_void
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|| func.which_ == StringIds::end_const_void
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|| func.which_ == StringIds::rbegin_const_void
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|| func.which_ == StringIds::rend_const_void;
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const bool test_end_iters = func.which_ == StringIds::end_void
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|| func.which_ == StringIds::end_const_void
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|| func.which_ == StringIds::rend_void
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|| func.which_ == StringIds::rend_const_void;
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// allocator object for test get_allocator
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Allocator alloc;
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// construct the string object
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String str (tdata.str_, tdata.strlen_, alloc);
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// construct the constant string object
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const String cstr (tdata.str_, tdata.strlen_, alloc);
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const std::size_t s_size = test_const_iters ? cstr.size () : str.size ();
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// save the state of the string object before the call
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// to detect wxception safety violations (changes to
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// the state of the object after an exception)
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const StringState str_state (rw_get_string_state (str));
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rwt_free_store* const pst = rwt_get_free_store (0);
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SharedAlloc* const pal = SharedAlloc::instance ();
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// iterate for`throw_after' starting at the next call to operator new,
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// forcing each call to throw an exception, until the function finally
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// succeeds (i.e, no exception is thrown)
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std::size_t throw_count;
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for (throw_count = 0; ; ++throw_count) {
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// (name of) expected and caught exception
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const char* expected = 0;
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const char* caught = 0;
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#ifndef _RWSTD_NO_EXCEPTIONS
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// by default excercise the exception safety of the function
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// by iteratively inducing an exception at each call to operator
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// new or Allocator::allocate() until the call succeeds
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expected = exceptions [1]; // bad_alloc
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*pst->throw_at_calls_ [0] = pst->new_calls_ [0] + throw_count + 1;
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pal->throw_at_calls_ [pal->m_allocate] =
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pal->throw_at_calls_ [pal->m_allocate] + throw_count + 1;
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#endif // _RWSTD_NO_EXCEPTIONS
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// start checking for memory leaks
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rw_check_leaks (str.get_allocator ());
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// for data () and c_str ()
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const charT* ret_ptr = 0;
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// methods result
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charT res;
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// for begin () and end ()
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StringIter it;
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// for begin () const and end () const
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StringCIter cit;
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// for rbegin () and rend ()
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StringRIter rit;
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// for rbegin () const and rend () const
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StringCRIter crit;
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// for get_allocator ()
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Allocator resalloc;
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try {
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bool it_relations = true;
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switch (func.which_) {
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case StringIds::begin_void:
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it = str.begin();
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res = s_size ? *it : charT ();
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it_relations = it == str.rend ().base ();
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break;
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case StringIds::begin_const_void:
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cit = cstr.begin();
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res = s_size ? *cit : charT ();
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it_relations = cit == cstr.rend ().base ();
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break;
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case StringIds::end_void:
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it = str.end();
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res = s_size ? *(it - 1) : charT ();
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it_relations = it == str.rbegin ().base ();
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break;
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case StringIds::end_const_void:
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cit = cstr.end();
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res = s_size ? *(cit - 1) : charT ();
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it_relations = cit == cstr.rbegin ().base ();
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break;
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case StringIds::rbegin_void:
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rit = str.rbegin();
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res = s_size ? *rit : charT ();
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it_relations = rit.base () == str.end ();
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break;
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case StringIds::rbegin_const_void:
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crit = cstr.rbegin();
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res = s_size ? *crit : charT ();
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it_relations = crit.base () == cstr.end ();
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break;
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case StringIds::rend_void:
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rit = str.rend();
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res = s_size ? *(rit - 1) : charT ();
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it_relations = rit.base () == str.begin ();
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break;
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case StringIds::rend_const_void:
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crit = cstr.rend();
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res = s_size ? *(crit - 1) : charT ();
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it_relations = crit.base () == cstr.begin ();
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break;
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case StringIds::c_str_void:
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ret_ptr = cstr.c_str ();
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break;
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case StringIds::data_void:
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ret_ptr = cstr.data ();
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break;
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case StringIds::get_allocator_void:
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resalloc = cstr.get_allocator ();
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break;
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default:
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RW_ASSERT ("test logic error: unknown iterators overload");
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return;
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}
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// for convenience
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static const int cwidth = sizeof (charT);
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if ( func.which_ == StringIds::data_void
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|| func.which_ == StringIds::c_str_void) {
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// 21.3.6
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// the member returns a non-null pointer
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rw_assert(0 != ret_ptr, 0, tcase.line,
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"line %d. %{$FUNCALL} expected non null, got null",
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__LINE__);
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if (ret_ptr) {
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// 21.3.6.1
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// if size() is nonzero, the member returns a pointer to the
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// initial element of an array whose first size() elements
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// equal the corresponding elements of the string controlled
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// by *this
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// 21.3.6.3
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// if size() is nonzero, the member returns a pointer to the
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// initial element of an array whose first size() elements
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// equal the corresponding elements of the string controlled
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// by *this
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const std::size_t match =
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rw_match (tcase.res, ret_ptr, tdata.reslen_);
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rw_assert (match == tdata.reslen_, 0, tcase.line,
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"line %d. %{$FUNCALL} expected %{#*s}, "
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"got %{/*.*Gs}, differ at pos %zu",
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__LINE__, int (tdata.reslen_), tdata.res_,
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cwidth, int (s_size), ret_ptr, match);
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if (func.which_ == StringIds::c_str_void) {
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// check the last element is equal to char ()
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const char null = char ();
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const bool success =
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(1 == rw_match (&null, &ret_ptr[s_size], 1));
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rw_assert(success, 0, tcase.line,
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"line %d. %{$FUNCALL} expected last element "
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"is a null character %{#c}, got %{#c}",
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__LINE__, null, ret_ptr[s_size]);
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}
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}
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}
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if (test_iters) {
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if (s_size) {
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const char exp_res =
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(NPOS != tcase.nres ? char (tcase.nres) : char ());
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const bool success = (1 == rw_match (&exp_res, &res, 1));
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rw_assert (success, 0, tcase.line,
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"line %d. %{$FUNCALL}%{?} - 1%{;} expected "
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"%{#c}, got %{#c}", __LINE__,
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test_end_iters, exp_res, res);
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}
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else {
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bool success = true;
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|
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if ( func.which_ == StringIds::begin_void
|
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|| func.which_ == StringIds::end_void)
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success = it == str.begin () && it == str.end ();
|
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if ( func.which_ == StringIds::begin_const_void
|
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|| func.which_ == StringIds::end_const_void)
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success = cit == cstr.begin () && cit == cstr.end ();
|
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if ( func.which_ == StringIds::rbegin_void
|
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|| func.which_ == StringIds::rend_void)
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success = rit == str.rbegin () && rit == str.rend ();
|
||||
|
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if ( func.which_ == StringIds::rbegin_const_void
|
||||
|| func.which_ == StringIds::rend_const_void)
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success =
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crit == cstr.rbegin () && crit == cstr.rend ();
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||||
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// check the begin () == end (), rbegin () == rend ()
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rw_assert(success, 0, tcase.line,
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"line %d. %{$FUNCALL} returned iterator is not "
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||||
"equal to begin and end for an empty string",
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||||
__LINE__);
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||||
}
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||||
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// check the iterators relationship
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rw_assert(it_relations, 0, tcase.line,
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"line %d. %{$FUNCALL} iterators "
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||||
"relationship is broken", __LINE__);
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||||
}
|
||||
|
||||
if (func.which_ == StringIds::get_allocator_void) {
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||||
|
||||
// verify that the allocator returned from the function
|
||||
// equal to allocator passed to the ctor
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||||
const bool success = (alloc == resalloc);
|
||||
|
||||
rw_assert(success, 0, tcase.line,
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||||
"line %d. %{$FUNCALL} expected equal to allocator "
|
||||
"passed to the ctor", __LINE__);
|
||||
}
|
||||
}
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||||
|
||||
#ifndef _RWSTD_NO_EXCEPTIONS
|
||||
|
||||
catch (const std::bad_alloc &ex) {
|
||||
caught = exceptions [1];
|
||||
rw_assert (0 == tcase.bthrow, 0, tcase.line,
|
||||
"line %d. %{$FUNCALL} %{?}expected %s,%{:}"
|
||||
"unexpectedly%{;} caught std::%s(%#s)",
|
||||
__LINE__, 0 != expected, expected, caught, ex.what ());
|
||||
}
|
||||
catch (const std::exception &ex) {
|
||||
caught = exceptions [2];
|
||||
rw_assert (0, 0, tcase.line,
|
||||
"line %d. %{$FUNCALL} %{?}expected %s,%{:}"
|
||||
"unexpectedly%{;} caught std::%s(%#s)",
|
||||
__LINE__, 0 != expected, expected, caught, ex.what ());
|
||||
}
|
||||
catch (...) {
|
||||
caught = exceptions [0];
|
||||
rw_assert (0, 0, tcase.line,
|
||||
"line %d. %{$FUNCALL} %{?}expected %s,%{:}"
|
||||
"unexpectedly%{;} caught %s",
|
||||
__LINE__, 0 != expected, expected, caught);
|
||||
}
|
||||
|
||||
#endif // _RWSTD_NO_EXCEPTIONS
|
||||
|
||||
// FIXME: verify the number of blocks the function call
|
||||
// is expected to allocate and detect any memory leaks
|
||||
rw_check_leaks (str.get_allocator (), tcase.line,
|
||||
std::size_t (-1), std::size_t (-1));
|
||||
|
||||
if (caught) {
|
||||
// verify that an exception thrown during allocation
|
||||
// didn't cause a change in the state of the object
|
||||
str_state.assert_equal (rw_get_string_state (str),
|
||||
__LINE__, tcase.line, caught);
|
||||
|
||||
// allow this call to operator new to succeed and try
|
||||
// to make the next one to fail during the next call
|
||||
// to the same function again
|
||||
continue;
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
rw_assert (0 == throw_count, 0, tcase.line,
|
||||
"line %d: %{$FUNCALL}: expected 0 %s exceptions, got %zu",
|
||||
__LINE__, exceptions [1], throw_count);
|
||||
|
||||
// disable bad_alloc exceptions
|
||||
*pst->throw_at_calls_ [0] = 0;
|
||||
pal->throw_at_calls_ [pal->m_allocate] = 0;
|
||||
}
|
||||
|
||||
/**************************************************************************/
|
||||
|
||||
DEFINE_STRING_TEST_FUNCTIONS (test_iterators);
|
||||
|
||||
int main (int argc, char** argv)
|
||||
{
|
||||
static const StringTest
|
||||
tests [] = {
|
||||
|
||||
#undef TEST
|
||||
#define TEST(gsig, sig) { \
|
||||
gsig, sig ## _test_cases, \
|
||||
sizeof sig ## _test_cases / sizeof *sig ## _test_cases \
|
||||
}
|
||||
|
||||
TEST (StringIds::begin_void, begin_void),
|
||||
TEST (StringIds::begin_const_void, begin_void),
|
||||
TEST (StringIds::end_void, end_void),
|
||||
TEST (StringIds::end_const_void, end_void),
|
||||
TEST (StringIds::rbegin_void, end_void),
|
||||
TEST (StringIds::rbegin_const_void, end_void),
|
||||
TEST (StringIds::rend_void, begin_void),
|
||||
TEST (StringIds::rend_const_void, begin_void),
|
||||
TEST (StringIds::c_str_void, c_str_void),
|
||||
TEST (StringIds::data_void, c_str_void),
|
||||
TEST (StringIds::get_allocator_void, get_allocator_void)
|
||||
};
|
||||
|
||||
const std::size_t test_count = sizeof tests / sizeof *tests;
|
||||
|
||||
return rw_run_string_test (argc, argv, __FILE__,
|
||||
"lib.string.iterators",
|
||||
test_iterators_func_array, tests, test_count);
|
||||
}
|
||||
Reference in New Issue
Block a user