522 lines
20 KiB
C++
522 lines
20 KiB
C++
/***************************************************************************
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*
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* 21.string.erase.cpp - string test exercising [lib.string::erase]
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*
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* $Id: 21.string.erase.cpp 590052 2007-10-30 12:44:14Z 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 <cstddef> // for ptrdiff_t, size_t
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#include <stdexcept> // for out_of_range
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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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// for convenience and brevity
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#define Erase(sig) StringIds::erase_ ## sig
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static const char* const exceptions[] = {
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"unknown exception", "out_of_range", "length_error",
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"bad_alloc", "exception"
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};
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/**************************************************************************/
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// used to exercise
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// erase ()
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static const StringTestCase
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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, str, sizeof str - 1, \
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0, 0, res, sizeof res - 1, 0 }
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// +--------------------------------- controlled sequence
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// | +--------------- expected result sequence
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// | |
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// V V
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TEST ("a", ""),
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TEST ("", ""),
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TEST ("<U0>", ""),
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TEST ("abc", ""),
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TEST ("t<U0> s", ""),
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TEST ("<U0>ab<U0>@2c", ""),
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TEST ("a<U0>b<U0>@2c", ""),
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TEST ("a<U0>bc<U0>@2", ""),
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TEST ("x@4096", ""),
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TEST ("last", "")
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};
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/**************************************************************************/
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// used to exercise
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// erase (size_type)
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static const StringTestCase
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size_test_cases [] = {
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#undef TEST
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#define TEST(str, off, res, bthrow) { \
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__LINE__, off, -1, -1, -1, -1, str, sizeof str - 1, \
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0, 0, res, sizeof res - 1, bthrow }
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// +-------------------------------------- controlled sequence
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// | +------------------ erase() pos argument
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// | | +------------- expected result sequence
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// | | | +--- exception info
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// | | | | 0 - no exception
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// | | | | 1 - out_of_range
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// | | | |
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// V V V V
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TEST ("", 0, "", 0),
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TEST ("<U0>", 0, "", 0),
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TEST ("<U0>", 1, "<U0>", 0),
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TEST ("<U0>@2", 1, "<U0>", 0),
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TEST ("a", 0, "", 0),
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TEST ("a", 1, "a", 0),
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TEST ("abc", 0, "", 0),
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TEST ("abc", 1, "a", 0),
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TEST ("abc", 2, "ab", 0),
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TEST ("abc", 3, "abc", 0),
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TEST ("t<U0> s", 0, "", 0),
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TEST ("t<U0> s", 1, "t", 0),
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TEST ("t<U0> s", 2, "t<U0>", 0),
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TEST ("t<U0> s", 3, "t<U0> ", 0),
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TEST ("t<U0> s", 4, "t<U0> s", 0),
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TEST ("a<U0>@3b", 2, "a<U0>", 0),
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TEST ("a<U0>@3b", 1, "a", 0),
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TEST ("a<U0>@3b", 0, "", 0),
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TEST ("a<U0>b<U0>@2c", 0, "", 0),
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TEST ("a<U0>b<U0>@2c", 4, "a<U0>b<U0>", 0),
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TEST ("<U0>ab<U0>@2c", 2, "<U0>a", 0),
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TEST ("ab<U0>c<U0>@2", 5, "ab<U0>c<U0>", 0),
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TEST ("a", 3, "a", 1),
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TEST ("t<U0> s", 5, "t<U0> s", 1),
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TEST ("ab<U0>c<U0>@2", 10, "ab<U0>c<U0>@2", 1),
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TEST ("x@4096", 4106, "x@4096", 1),
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TEST ("x@4096", 0, "", 0),
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TEST ("x@4096", 1, "x", 0),
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TEST ("x@4096", 4, "xxxx", 0),
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TEST ("x@4096", 4096, "x@4096", 0),
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TEST ("x@2048y@2048", 2048, "x@2048", 0),
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TEST ("last test", 4, "last", 0)
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};
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/**************************************************************************/
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// used to exercise
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// erase (size_type, size_type)
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// erase (iterator, iterator)
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static const StringTestCase
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size_size_test_cases [] = {
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// size_size_test_cases serves a double duty
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#define iter_iter_test_cases size_size_test_cases
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#undef TEST
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#define TEST(str, off, size, res, bthrow) { \
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__LINE__, off, size, -1, -1, -1, str, sizeof str - 1, \
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0, 0, res, sizeof res - 1, bthrow }
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// +----------------------------------------- controlled sequence
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// | +--------------------- erase() pos argument
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// | | +----------- erase() n argument
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// | | | +------- expected result sequence
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// | | | | +--- exception info
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// | | | | | 0 - no exception
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// | | | | | 1 - out_of_range
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// | | | | |
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// | | | | +-------+
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// V V V V V
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TEST ("", 0, 0, "", 0),
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TEST ("<U0>", 0, 1, "", 0),
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TEST ("<U0>", 0, 0, "<U0>", 0),
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TEST ("<U0>", 1, 1, "<U0>", 0),
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TEST ("<U0>@2", 1, 1, "<U0>", 0),
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TEST ("<U0>@2", 0, 1, "<U0>", 0),
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TEST ("a", 0, 1, "", 0),
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TEST ("a", 0, 0, "a", 0),
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TEST ("a", 1, 1, "a", 0),
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TEST ("abc", 0, 3, "", 0),
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TEST ("abc", 0, 2, "c", 0),
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TEST ("abc", 1, 2, "a", 0),
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TEST ("abc", 1, 1, "ac", 0),
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TEST ("abc", 2, 1, "ab", 0),
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TEST ("abc", 3, 0, "abc", 0),
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TEST ("t<U0> s", 0, 3, "s", 0),
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TEST ("t<U0> s", 0, 4, "", 0),
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TEST ("t<U0> s", 0, 1, "<U0> s", 0),
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TEST ("t<U0> s", 1, 3, "t", 0),
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TEST ("t<U0> s", 1, 2, "ts", 0),
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TEST ("t<U0> s", 2, 2, "t<U0>", 0),
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TEST ("t<U0> s", 2, 1, "t<U0>s", 0),
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TEST ("t<U0> s", 3, 2, "t<U0> ", 0),
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TEST ("t<U0> s", 4, 0, "t<U0> s", 0),
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TEST ("a<U0>@3b", 2, 0, "a<U0>@3b", 0),
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TEST ("a<U0>@3b", 2, 3, "a<U0>", 0),
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TEST ("a<U0>@3b", 2, 2, "a<U0>b", 0),
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TEST ("a<U0>@3b", 1, 4, "a", 0),
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TEST ("a<U0>@3b", 0, 5, "", 0),
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TEST ("a<U0>@3b", 0, 2, "<U0>@2b", 0),
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TEST ("a<U0>b<U0>@2c", 0, 6, "", 0),
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TEST ("a<U0>b<U0>@2c", 4, 2, "a<U0>b<U0>", 0),
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TEST ("a<U0>b<U0>@2c", 4, 1, "a<U0>b<U0>c", 0),
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TEST ("<U0>ab<U0>@2c", 2, 5, "<U0>a", 0),
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TEST ("<U0>ab<U0>@2c", 0, 4, "<U0>c", 0),
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TEST ("ab<U0>c<U0>@2", 5, 1, "ab<U0>c<U0>", 0),
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TEST ("a", 0, 3, "", 0),
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TEST ("t<U0> s", 0, 9, "", 0),
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TEST ("ab<U0>c<U0>@2", 0, 10, "", 0),
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TEST ("x@4096", 0, 4105, "", 0),
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TEST ("a", 3, 1, "a", 1),
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TEST ("t<U0> s", 5, 1, "t<U0> s", 1),
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TEST ("ab<U0>c<U0>@2", 10, 1, "ab<U0>c<U0>@2", 1),
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TEST ("x@4096", 4106, 1, "x@4096", 1),
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TEST ("x@4096", 0, 4096, "", 0),
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TEST ("x@4096", 1, 4095, "x", 0),
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TEST ("x@4096", 4, 4092, "xxxx", 0),
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TEST ("x@4096", 4, 4090, "xxxxxx", 0),
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TEST ("x@4096", 4096, 4096, "x@4096", 0),
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TEST ("x@2048y@2048", 1, 4094, "xy", 0),
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TEST ("last test", 4, 1, "lasttest", 0)
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};
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/**************************************************************************/
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// used to exercise
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// erase (iterator)
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static const StringTestCase
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iter_test_cases [] = {
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#undef TEST
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#define TEST(str, off, res) { \
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__LINE__, off, -1, -1, -1, -1, str, sizeof str - 1, \
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0, 0, res, sizeof res - 1, 0 }
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// +-------------------------------------- controlled sequence
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// | +------------------ iterator offset
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// | | +------------- expected result sequence
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// | | |
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// V V V
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TEST ("a", 0, ""),
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TEST ("<U0>", 0, ""),
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TEST ("<U0>@2", 0, "<U0>"),
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TEST ("<U0>@2", 1, "<U0>"),
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TEST ("abc", 0, "bc"),
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TEST ("abc", 1, "ac"),
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TEST ("abc", 2, "ab"),
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TEST ("t<U0> s", 0, "<U0> s"),
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TEST ("t<U0> s", 1, "t s"),
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TEST ("t<U0> s", 2, "t<U0>s"),
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TEST ("t<U0> s", 3, "t<U0> "),
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TEST ("a<U0>@3b", 4, "a<U0>@3"),
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TEST ("a<U0>@3b", 2, "a<U0>@2b"),
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TEST ("a<U0>@3b", 1, "a<U0>@2b"),
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TEST ("a<U0>@3b", 0, "<U0>@3b"),
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TEST ("a<U0>b<U0>@2c", 4, "a<U0>b<U0>c"),
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TEST ("<U0>ab<U0>@2c", 0, "ab<U0>@2c"),
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TEST ("<U0>ab<U0>@2c", 2, "<U0>a<U0>@2c"),
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TEST ("ab<U0>c<U0>@2", 5, "ab<U0>c<U0>"),
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TEST ("x@4096y", 4096, "x@4096"),
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TEST ("x@4096", 4088, "x@4095"),
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TEST ("ax@4096", 0, "x@4096"),
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TEST ("x@4096", 9, "x@4095"),
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TEST ("last test", 4, "lasttest")
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};
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/**************************************************************************/
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// exercises basic_string::erase, 21.3.5.5
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template <class charT, class Traits, class Allocator>
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void test_erase (charT, Traits*, Allocator*,
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const StringFunc &func,
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const StringTestCase &tcase)
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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 ConstStringIter;
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const bool use_iters =
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StringIds::arg_iter == StringIds::arg_type (func.which_, 1);
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if (use_iters && tcase.bthrow)
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return;
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static const std::size_t BUFSIZE = 256;
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static charT wstr_buf [BUFSIZE];
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std::size_t str_len = sizeof wstr_buf / sizeof *wstr_buf;
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charT* wstr = rw_expand (wstr_buf, tcase.str, tcase.str_len, &str_len);
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static charT wres_buf [BUFSIZE];
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std::size_t res_len = sizeof wres_buf / sizeof *wres_buf;
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charT* wres = rw_expand (wres_buf, tcase.res, tcase.nres, &res_len);
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static char nres_buf [BUFSIZE];
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char* nres = 0;
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if (use_iters) {
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std::size_t nreslen = sizeof nres_buf / sizeof *nres_buf;
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nres = rw_expand (nres_buf, tcase.res, tcase.nres, &nreslen);
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}
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// construct the string object to be modified
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// and the (possibly unused) argument string
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String str (wstr, str_len);
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if (wstr != wstr_buf)
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delete[] wstr;
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wstr = 0;
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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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StringIter res_iter = str.begin ();
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// compute the offset and the extent (the number of elements)
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// of the first range into the string object being modified
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const std::size_t size1 = str_len;
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const std::size_t off1 =
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std::size_t (tcase.off) < size1 ? std::size_t (tcase.off) : size1;
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const std::size_t ext1 =
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off1 + tcase.size < size1 ? tcase.size : size1 - off1;
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// create a pair of iterators into the string object being
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// modified (used only by the iterator overloads)
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const StringIter it_first (str.begin () + off1);
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const StringIter it_last (it_first + ext1);
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#ifndef _RWSTD_NO_EXCEPTIONS
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// is some exception expected ?
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const char* expected = 0;
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if (1 == tcase.bthrow)
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expected = exceptions [1];
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const char* caught = 0;
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#else // if defined (_RWSTD_NO_EXCEPTIONS)
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if (tcase.bthrow) {
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if (wres != wres_buf)
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delete[] wres;
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return;
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}
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#endif // _RWSTD_NO_EXCEPTIONS
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// pointer to the returned reference
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const String* ret_ptr = 0;
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try {
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switch (func.which_) {
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case Erase (void):
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ret_ptr = &str.erase ();
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break;
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case Erase (size):
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ret_ptr = &str.erase (tcase.off);
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break;
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case Erase (size_size):
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ret_ptr = &str.erase (tcase.off, tcase.size);
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break;
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case Erase (iter):
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res_iter = str.erase (it_first);
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break;
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case Erase (iter_iter):
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res_iter = str.erase (it_first, it_last);
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break;
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default:
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RW_ASSERT (!"test logic error: unknown erase overload");
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return;
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}
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// verify the returned value
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if (use_iters) {
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const ConstStringIter begin = str.begin ();
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const ConstStringIter end = str.end ();
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const bool success = begin <= res_iter && res_iter <= end;
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rw_assert (success, 0, tcase.line,
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"line %d. %{$FUNCALL} returned invalid iterator, "
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"difference with begin is %td",
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__LINE__, res_iter - begin);
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if (std::size_t (tcase.off) >= res_len) {
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rw_assert (res_iter == end, 0, tcase.line,
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"line %d. %{$FUNCALL} != end()", __LINE__);
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}
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else {
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const std::size_t match =
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rw_match (nres + tcase.off, &(*res_iter), 1);
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rw_assert (1 == match, 0, tcase.line,
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"line %d. %{$FUNCALL} == %{#c}, got %{#c}",
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__LINE__, nres[tcase.off], *res_iter);
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}
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}
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else {
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// verify that the reference returned from the function
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// refers to the modified string object (i.e., *this
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// within the function)
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const std::ptrdiff_t ret_off = ret_ptr - &str;
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// verify the returned value
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rw_assert (0 == ret_off, 0, tcase.line,
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"line %d. %{$FUNCALL} returned invalid reference, "
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"offset is %td", __LINE__, ret_off);
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}
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// verfiy that strings length are equal
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rw_assert (res_len == str.size (), 0, tcase.line,
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"line %d. %{$FUNCALL} expected %{#*s} with length "
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"%zu, got %{/*.*Gs} with length %zu",
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__LINE__, int (tcase.nres), tcase.res,
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res_len, int (sizeof (charT)),
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int (str.size ()), str.c_str (), str.size ());
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if (res_len == str.size ()) {
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// if the result length matches the expected length
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// (and only then), also verify that the modified
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// string matches the expected result
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const std::size_t match =
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rw_match (tcase.res, str.c_str(), str.size ());
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rw_assert (match == res_len, 0, tcase.line,
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"line %d. %{$FUNCALL} expected %{#*s}, "
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"got %{/*.*Gs}, difference at offset %zu",
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__LINE__, int (tcase.nres), tcase.res,
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int (sizeof (charT)), int (str.size ()),
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str.c_str (), match);
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}
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}
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#ifndef _RWSTD_NO_EXCEPTIONS
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catch (const std::out_of_range &ex) {
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caught = exceptions [1];
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rw_assert (caught == expected, 0, tcase.line,
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"line %d. %{$FUNCALL} %{?}expected %s,%{:}"
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"unexpectedly%{;} caught std::%s(%#s)",
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__LINE__, 0 != expected, expected, caught, ex.what ());
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}
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catch (const std::exception &ex) {
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caught = exceptions [4];
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rw_assert (0, 0, tcase.line,
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"line %d. %{$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
|
|
|
|
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);
|
|
}
|
|
|
|
if (nres != nres_buf)
|
|
delete[] nres;
|
|
|
|
if (wres != wres_buf)
|
|
delete[] wres;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
|
|
DEFINE_STRING_TEST_DISPATCH (test_erase);
|
|
|
|
int main (int argc, char** argv)
|
|
{
|
|
static const StringTest
|
|
tests [] = {
|
|
|
|
#undef TEST
|
|
#define TEST(sig) { \
|
|
Erase (sig), sig ## _test_cases, \
|
|
sizeof sig ## _test_cases / sizeof *sig ## _test_cases \
|
|
}
|
|
|
|
TEST (void),
|
|
TEST (size),
|
|
TEST (size_size),
|
|
TEST (iter),
|
|
TEST (iter_iter)
|
|
};
|
|
|
|
const std::size_t test_count = sizeof tests / sizeof *tests;
|
|
|
|
return rw_run_string_test (argc, argv, __FILE__,
|
|
"lib.string.erase",
|
|
test_erase, tests, test_count);
|
|
}
|