518 lines
21 KiB
C++
518 lines
21 KiB
C++
/***************************************************************************
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*
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* 21.string.plus.equal.cpp - test exercising [lib.string.op+=]
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*
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* $Id: 21.string.op.plus.equal.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 <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 StringIds
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#include <alg_test.h> // for InputIter
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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 OpPlusEq(sig) StringIds::op_plus_eq_ ## 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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// exercises:
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// operator += (const value_type*)
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static const StringTestCase
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cptr_test_cases [] = {
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#undef TEST
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#define TEST(str, src, res, bthrow) \
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{ __LINE__, -1, -1, -1, -1, -1, str, sizeof str - 1, src, \
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sizeof src - 1, res, sizeof res - 1, bthrow }
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// +----------------------------------------- controlled sequence
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// | +----------------------- sequence to be appended
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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 - length_error
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// | | | |
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// | | | +--------------+
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// V V V V
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TEST ("ab", "c", "abc", 0),
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TEST ("", "", "", 0),
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TEST ("", "<U0>", "", 0),
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TEST ("", "abc", "abc", 0),
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TEST ("<U0>", "", "<U0>", 0),
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TEST ("<U0>", "a", "<U0>a", 0),
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TEST ("<U0>", "<U0>@2", "<U0>", 0),
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TEST ("ab", "cd", "abcd", 0),
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TEST ("bcd", "a", "bcda", 0),
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TEST ("cde", "ab", "cdeab", 0),
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TEST ("abc", "", "abc", 0),
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TEST ("ab", "c<U0>e", "abc", 0),
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TEST ("<U0>@2ab", "cdefghij", "<U0>@2abcdefghij", 0),
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TEST ("a<U0>@2b", "cdefghij", "a<U0>@2bcdefghij", 0),
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TEST ("ab<U0>@2", "cdefghij", "ab<U0>@2cdefghij", 0),
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TEST ("a<U0>b<U0>@2c", "e<U0>", "a<U0>b<U0>@2ce", 0),
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TEST ("<U0>ab<U0>@2c", "e<U0>", "<U0>ab<U0>@2ce", 0),
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TEST ("abcdefghij", "abcdefghij", "abcdefghijabcdefghij", 0),
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TEST ("", "x@4096", "x@4096", 0),
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TEST ("x@4096", "", "x@4096", 0),
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TEST ("x@2048", "y@2048", "x@2048y@2048", 0),
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TEST ("x@10", "x@118", "x@128", 0),
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TEST ("x@128", "x@79", "x@207", 0),
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TEST ("x@207", "x@127", "x@334", 0),
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TEST ("x@334", "x@206", "x@540", 0),
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TEST ("x@540", "x@333", "x@873", 0),
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TEST ("x@539", "x@873", "x@1412", 0),
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TEST ("x@872", "x@1412", "x@2284", 0),
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TEST ("x@1411", "x@2284", "x@3695", 0),
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TEST ("x@1412", "x@2284", "x@3696", 0),
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TEST ("", 0, "", 0),
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TEST ("abc", 0, "abcabc", 0),
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TEST ("a<U0>@2bc", 0, "a<U0>@2bca", 0),
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TEST ("<U0>@2abc", 0, "<U0>@2abc", 0),
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TEST ("abc<U0>@2", 0, "abc<U0>@2abc", 0),
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TEST ("x@2048", 0, "x@4096", 0),
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TEST ("last", "test", "lasttest", 0)
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};
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/**************************************************************************/
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// exercises:
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// operator += (const basic_string&)
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static const StringTestCase
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cstr_test_cases [] = {
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#undef TEST
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#define TEST(str, src, res, bthrow) \
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{ __LINE__, -1, -1, -1, -1, -1, str, sizeof str - 1, src, \
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sizeof src - 1, res, sizeof res - 1, bthrow }
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// +----------------------------------------- controlled sequence
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// | +----------------------- sequence to be appended
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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 - length_error
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// | | | |
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// | | | +--------------+
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// V V V V
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TEST ("ab", "c", "abc", 0),
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TEST ("", "", "", 0),
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TEST ("", "<U0>", "<U0>", 0),
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TEST ("", "abc", "abc", 0),
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TEST ("<U0>", "", "<U0>", 0),
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TEST ("<U0>", "a", "<U0>a", 0),
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TEST ("<U0>", "<U0>@2", "<U0>@3", 0),
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TEST ("ab", "cd", "abcd", 0),
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TEST ("bcd", "a", "bcda", 0),
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TEST ("cde", "ab", "cdeab", 0),
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TEST ("abc", "", "abc", 0),
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TEST ("ab", "c<U0>e", "abc<U0>e", 0),
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TEST ("<U0>@2ab", "cdefghij", "<U0>@2abcdefghij", 0),
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TEST ("a<U0>@2b", "cdefghij", "a<U0>@2bcdefghij", 0),
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TEST ("ab<U0>@2", "cdefghij", "ab<U0>@2cdefghij", 0),
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TEST ("a<U0>b<U0>@2c", "e<U0>", "a<U0>b<U0>@2ce<U0>", 0),
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TEST ("<U0>ab<U0>@2c", "e<U0>", "<U0>ab<U0>@2ce<U0>", 0),
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TEST ("ab<U0>@2c<U0>", "<U0>e", "ab<U0>@2c<U0>@2e", 0),
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TEST ("abcdefghij", "abcdefghij", "abcdefghijabcdefghij", 0),
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TEST ("", "x@4096", "x@4096", 0),
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TEST ("x@4096", "", "x@4096", 0),
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TEST ("x@2048", "y@2048", "x@2048y@2048", 0),
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TEST ("x@10", "x@118", "x@128", 0),
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TEST ("x@128", "x@79", "x@207", 0),
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TEST ("x@207", "x@127", "x@334", 0),
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TEST ("x@334", "x@206", "x@540", 0),
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TEST ("x@540", "x@333", "x@873", 0),
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TEST ("x@539", "x@873", "x@1412", 0),
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TEST ("x@872", "x@1412", "x@2284", 0),
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TEST ("x@1411", "x@2284", "x@3695", 0),
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TEST ("x@1412", "x@2284", "x@3696", 0),
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TEST ("", 0, "", 0),
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TEST ("abc", 0, "abcabc", 0),
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TEST ("a<U0>@2bc", 0, "a<U0>@2bca<U0>@2bc", 0),
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TEST ("<U0>@2abc", 0, "<U0>@2abc<U0>@2abc", 0),
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TEST ("abc<U0>@2", 0, "abc<U0>@2abc<U0>@2", 0),
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TEST ("x@2048", 0, "x@4096", 0),
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TEST ("last", "test", "lasttest", 0)
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};
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/**************************************************************************/
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// exercises:
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// operator+= (value_type)
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static const StringTestCase
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val_test_cases [] = {
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#undef TEST
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#define TEST(str, val, res, bthrow) \
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{ __LINE__, -1, -1, -1, -1, val, str, sizeof str - 1, 0, 0, \
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res, sizeof res - 1, bthrow }
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// +---------------------------------- controlled sequence
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// | +----------------- character to be appended
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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 - length_error
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// | | | |
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// | | | +----+
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// V V V V
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TEST ("ab", 'c', "abc", 0),
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TEST ("", 'a', "a", 0),
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TEST ("", '\0', "<U0>", 0),
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TEST ("<U0>", 'a', "<U0>a", 0),
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TEST ("<U0>", '\0', "<U0>@2", 0),
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TEST ("cde", 'a', "cdea", 0),
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TEST ("abc", '\0', "abc<U0>", 0),
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TEST ("a<U0>b<U0>@2c", '\0', "a<U0>b<U0>@2c<U0>", 0),
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TEST ("<U0>ab<U0>@2c", '\0', "<U0>ab<U0>@2c<U0>", 0),
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TEST ("a<U0>bc<U0>@2", 'a', "a<U0>bc<U0>@2a", 0),
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TEST ("x@127", 'x', "x@128", 0),
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TEST ("x@206", 'x', "x@207", 0),
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TEST ("x@333", 'x', "x@334", 0),
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TEST ("x@539", 'x', "x@540", 0),
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TEST ("x@1411", 'x', "x@1412", 0),
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TEST ("x@2283", 'x', "x@2284", 0),
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TEST ("x@3694", 'x', "x@3695", 0),
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TEST ("x@540", 'x', "x@541", 0),
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TEST ("last", 't', "lastt", 0)
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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_op_plus_eq (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 UserTraits<charT>::MemFun UTMemFun;
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static const std::size_t BUFSIZE = 256;
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static charT wstr_buf [BUFSIZE];
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static charT warg_buf [BUFSIZE];
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std::size_t str_len = sizeof wstr_buf / sizeof *wstr_buf;
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std::size_t arg_len = sizeof warg_buf / sizeof *warg_buf;
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charT* wstr = rw_expand (wstr_buf, tcase.str, tcase.str_len, &str_len);
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charT* warg = rw_expand (warg_buf, tcase.arg, tcase.arg_len, &arg_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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// construct the string object to be modified
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// and the (possibly unused) argument string
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/* const */ String str (wstr, str_len);
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const String arg (warg, arg_len);
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if (wstr != wstr_buf)
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delete[] wstr;
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if (warg != warg_buf)
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delete[] warg;
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wstr = 0;
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warg = 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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const charT* const arg_ptr = tcase.arg ? arg.c_str () : str.c_str ();
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const String& arg_str = tcase.arg ? arg : str;
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const charT arg_val = make_char (char (tcase.val), (charT*)0);
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std::size_t total_length_calls = 0;
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std::size_t n_length_calls = 0;
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std::size_t* const rg_calls = rw_get_call_counters ((Traits*)0, (charT*)0);
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if (rg_calls)
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total_length_calls = rg_calls [UTMemFun::length];
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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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if (1 == tcase.bthrow)
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expected = exceptions [2]; // length_error
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else if (0 == tcase.bthrow) {
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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 [3]; // 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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}
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else {
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// exceptions disabled for this test case
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}
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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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// start checking for memory leaks
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rw_check_leaks (str.get_allocator ());
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try {
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// pointer to the returned reference
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const String* ret_ptr = 0;
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switch (func.which_) {
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case OpPlusEq (cptr):
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ret_ptr = &str.operator+= (arg_ptr);
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if (rg_calls)
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n_length_calls = rg_calls [UTMemFun::length];
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break;
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case OpPlusEq (cstr):
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ret_ptr = &str.operator+= (arg_str);
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break;
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case OpPlusEq (val):
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ret_ptr = &str.operator+= (arg_val);
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break;
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default:
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RW_ASSERT ("test logic error: unknown operator += overload");
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return;
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}
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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. %{$FUNCALL} returned invalid reference, "
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"offset is %td", __LINE__, ret_off);
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// verfiy that strings length are equal
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rw_assert (res_len == str.size (), 0, tcase.line,
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"line %d. %{$FUNCALL} expected %{#*s} "
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"with length %zu, got %{/*.*Gs} with length %zu",
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__LINE__, int (tcase.nres), tcase.res, res_len,
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int (sizeof (charT)), int (str.size ()),
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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. %{$FUNCALL} expected %{#*s}, "
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"got %{/*.*Gs}, difference at offset %zu",
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__LINE__, int (tcase.nres), tcase.res,
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int (sizeof (charT)), int (str.size ()),
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str.c_str (), match);
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}
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// verify that Traits::length was used
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if (OpPlusEq (cptr) == func.which_ && rg_calls) {
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rw_assert (n_length_calls - total_length_calls > 0,
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0, tcase.line, "line %d. %{$FUNCALL} doesn't "
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"use traits::length()", __LINE__);
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}
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}
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#ifndef _RWSTD_NO_EXCEPTIONS
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catch (const std::length_error &ex) {
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caught = exceptions [2];
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rw_assert (caught == expected, 0, tcase.line,
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"line %d. %{$FUNCALL} %{?}expected %s,%{:}"
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"unexpectedly%{;} caught std::%s(%#s)",
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__LINE__, 0 != expected, expected, caught, ex.what ());
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}
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catch (const std::bad_alloc &ex) {
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caught = exceptions [3];
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rw_assert (0 == tcase.bthrow, 0, tcase.line,
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"line %d. %{$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. %{$FUNCALL} %{?}expected %s,%{:}"
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"unexpectedly%{;} caught std::%s(%#s)",
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__LINE__, 0 != expected, expected, caught, ex.what ());
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}
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catch (...) {
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caught = exceptions [0];
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rw_assert (0, 0, tcase.line,
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"line %d. %{$FUNCALL} %{?}expected %s,%{:}"
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"unexpectedly%{;} caught %s",
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__LINE__, 0 != expected, expected, caught);
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}
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#endif // _RWSTD_NO_EXCEPTIONS
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// FIXME: verify the number of blocks the function call
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// is expected to allocate and detect any memory leaks
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rw_check_leaks (str.get_allocator (), tcase.line,
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std::size_t (-1), std::size_t (-1));
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if (caught) {
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// verify that an exception thrown during allocation
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// didn't cause a change in the state of the object
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str_state.assert_equal (rw_get_string_state (str),
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__LINE__, tcase.line, caught);
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if (0 == tcase.bthrow) {
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// allow this call to operator new to succeed and try
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// to make the next one to fail during the next call
|
|
// to the same function again
|
|
continue;
|
|
}
|
|
}
|
|
else if (0 < tcase.bthrow) {
|
|
rw_assert (caught == expected, 0, tcase.line,
|
|
"line %d. %{$FUNCALL} %{?}expected %s, caught %s"
|
|
"%{:}unexpectedly caught %s%{;}",
|
|
__LINE__, 0 != expected, expected, caught, caught);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
#ifndef _RWSTD_NO_REPLACEABLE_NEW_DELETE
|
|
|
|
// verify that if exceptions are enabled and when capacity changes
|
|
// at least one exception is thrown
|
|
const std::size_t expect_throws = str_state.capacity_ < str.capacity ();
|
|
|
|
#else // if defined (_RWSTD_NO_REPLACEABLE_NEW_DELETE)
|
|
|
|
const std::size_t expect_throws =
|
|
(StringIds::UserAlloc == func.alloc_id_)
|
|
? str_state.capacity_ < str.capacity (): 0;
|
|
|
|
#endif // _RWSTD_NO_REPLACEABLE_NEW_DELETE
|
|
|
|
rw_assert (expect_throws == throw_count, 0, tcase.line,
|
|
"line %d: %{$FUNCALL}: expected exactly 1 %s exception "
|
|
"while changing capacity from %zu to %zu, got %zu",
|
|
__LINE__, exceptions [3],
|
|
str_state.capacity_, str.capacity (), throw_count);
|
|
|
|
// disable bad_alloc exceptions
|
|
*pst->throw_at_calls_ [0] = 0;
|
|
pal->throw_at_calls_ [pal->m_allocate] = 0;
|
|
|
|
if (wres != wres_buf)
|
|
delete[] wres;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
|
|
DEFINE_STRING_TEST_DISPATCH (test_op_plus_eq);
|
|
|
|
int main (int argc, char** argv)
|
|
{
|
|
static const StringTest
|
|
tests [] = {
|
|
|
|
#undef TEST
|
|
#define TEST(sig) { \
|
|
OpPlusEq (sig), sig ## _test_cases, \
|
|
sizeof sig ## _test_cases / sizeof *sig ## _test_cases \
|
|
}
|
|
|
|
TEST (cptr),
|
|
TEST (cstr),
|
|
TEST (val)
|
|
};
|
|
|
|
const std::size_t test_count = sizeof tests / sizeof *tests;
|
|
|
|
return rw_run_string_test (argc, argv, __FILE__,
|
|
"lib.string.op+=",
|
|
test_op_plus_eq, tests, test_count);
|
|
}
|