| /*************************************************************************** |
| * |
| * 21.string.plus.equal.cpp - test exercising [lib.string.op+=] |
| * |
| * $Id$ |
| * |
| *************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 2006 Rogue Wave Software. |
| * |
| **************************************************************************/ |
| |
| #include <string> // for string |
| #include <stdexcept> // for out_of_range, length_error |
| |
| #include <cstddef> // for size_t |
| |
| #include <rw_strings.h> // for StringIds |
| #include <rw_alg_test.h> // for InputIter |
| #include <rw_driver.h> // for rw_test() |
| #include <rw_allocator.h> // for UserAlloc |
| #include <rw_char.h> // for rw_expand() |
| #include <rw_new.h> // for bad_alloc, replacement operator new |
| |
| /**************************************************************************/ |
| |
| // for convenience and brevity |
| #define OpPlusEq(sig) StringIds::op_plus_eq_ ## sig |
| |
| static const char* const exceptions[] = { |
| "unknown exception", "out_of_range", "length_error", |
| "bad_alloc", "exception" |
| }; |
| |
| /**************************************************************************/ |
| |
| // exercises: |
| // operator += (const value_type*) |
| static const StringTestCase |
| cptr_test_cases [] = { |
| |
| #undef TEST |
| #define TEST(str, src, res, bthrow) \ |
| { __LINE__, -1, -1, -1, -1, -1, str, sizeof str - 1, src, \ |
| sizeof src - 1, res, sizeof res - 1, bthrow } |
| |
| // +----------------------------------------- controlled sequence |
| // | +----------------------- sequence to be appended |
| // | | +--------- expected result sequence |
| // | | | +---- exception info |
| // | | | | 0 - no exception |
| // | | | | 1 - length_error |
| // | | | | |
| // | | | +--------------+ |
| // V V V V |
| TEST ("ab", "c", "abc", 0), |
| |
| TEST ("", "", "", 0), |
| TEST ("", "<U0>", "", 0), |
| TEST ("", "abc", "abc", 0), |
| |
| TEST ("<U0>", "", "<U0>", 0), |
| TEST ("<U0>", "a", "<U0>a", 0), |
| TEST ("<U0>", "<U0>@2", "<U0>", 0), |
| |
| TEST ("ab", "cd", "abcd", 0), |
| TEST ("bcd", "a", "bcda", 0), |
| TEST ("cde", "ab", "cdeab", 0), |
| TEST ("abc", "", "abc", 0), |
| TEST ("ab", "c<U0>e", "abc", 0), |
| |
| TEST ("<U0>@2ab", "cdefghij", "<U0>@2abcdefghij", 0), |
| TEST ("a<U0>@2b", "cdefghij", "a<U0>@2bcdefghij", 0), |
| TEST ("ab<U0>@2", "cdefghij", "ab<U0>@2cdefghij", 0), |
| TEST ("a<U0>b<U0>@2c", "e<U0>", "a<U0>b<U0>@2ce", 0), |
| TEST ("<U0>ab<U0>@2c", "e<U0>", "<U0>ab<U0>@2ce", 0), |
| TEST ("abcdefghij", "abcdefghij", "abcdefghijabcdefghij", 0), |
| |
| TEST ("", "x@4096", "x@4096", 0), |
| TEST ("x@4096", "", "x@4096", 0), |
| TEST ("x@2048", "y@2048", "x@2048y@2048", 0), |
| |
| TEST ("x@10", "x@118", "x@128", 0), |
| TEST ("x@128", "x@79", "x@207", 0), |
| TEST ("x@207", "x@127", "x@334", 0), |
| TEST ("x@334", "x@206", "x@540", 0), |
| TEST ("x@540", "x@333", "x@873", 0), |
| TEST ("x@539", "x@873", "x@1412", 0), |
| TEST ("x@872", "x@1412", "x@2284", 0), |
| TEST ("x@1411", "x@2284", "x@3695", 0), |
| TEST ("x@1412", "x@2284", "x@3696", 0), |
| |
| TEST ("", 0, "", 0), |
| TEST ("abc", 0, "abcabc", 0), |
| TEST ("a<U0>@2bc", 0, "a<U0>@2bca", 0), |
| TEST ("<U0>@2abc", 0, "<U0>@2abc", 0), |
| TEST ("abc<U0>@2", 0, "abc<U0>@2abc", 0), |
| TEST ("x@2048", 0, "x@4096", 0), |
| |
| TEST ("last", "test", "lasttest", 0) |
| }; |
| |
| /**************************************************************************/ |
| |
| // exercises: |
| // operator += (const basic_string&) |
| static const StringTestCase |
| cstr_test_cases [] = { |
| |
| #undef TEST |
| #define TEST(str, src, res, bthrow) \ |
| { __LINE__, -1, -1, -1, -1, -1, str, sizeof str - 1, src, \ |
| sizeof src - 1, res, sizeof res - 1, bthrow } |
| |
| // +----------------------------------------- controlled sequence |
| // | +----------------------- sequence to be appended |
| // | | +--------- expected result sequence |
| // | | | +---- exception info |
| // | | | | 0 - no exception |
| // | | | | 1 - length_error |
| // | | | | |
| // | | | +--------------+ |
| // V V V V |
| TEST ("ab", "c", "abc", 0), |
| |
| TEST ("", "", "", 0), |
| TEST ("", "<U0>", "<U0>", 0), |
| TEST ("", "abc", "abc", 0), |
| |
| TEST ("<U0>", "", "<U0>", 0), |
| TEST ("<U0>", "a", "<U0>a", 0), |
| TEST ("<U0>", "<U0>@2", "<U0>@3", 0), |
| |
| TEST ("ab", "cd", "abcd", 0), |
| TEST ("bcd", "a", "bcda", 0), |
| TEST ("cde", "ab", "cdeab", 0), |
| TEST ("abc", "", "abc", 0), |
| TEST ("ab", "c<U0>e", "abc<U0>e", 0), |
| |
| TEST ("<U0>@2ab", "cdefghij", "<U0>@2abcdefghij", 0), |
| TEST ("a<U0>@2b", "cdefghij", "a<U0>@2bcdefghij", 0), |
| TEST ("ab<U0>@2", "cdefghij", "ab<U0>@2cdefghij", 0), |
| TEST ("a<U0>b<U0>@2c", "e<U0>", "a<U0>b<U0>@2ce<U0>", 0), |
| TEST ("<U0>ab<U0>@2c", "e<U0>", "<U0>ab<U0>@2ce<U0>", 0), |
| TEST ("ab<U0>@2c<U0>", "<U0>e", "ab<U0>@2c<U0>@2e", 0), |
| TEST ("abcdefghij", "abcdefghij", "abcdefghijabcdefghij", 0), |
| |
| TEST ("", "x@4096", "x@4096", 0), |
| TEST ("x@4096", "", "x@4096", 0), |
| TEST ("x@2048", "y@2048", "x@2048y@2048", 0), |
| |
| TEST ("x@10", "x@118", "x@128", 0), |
| TEST ("x@128", "x@79", "x@207", 0), |
| TEST ("x@207", "x@127", "x@334", 0), |
| TEST ("x@334", "x@206", "x@540", 0), |
| TEST ("x@540", "x@333", "x@873", 0), |
| TEST ("x@539", "x@873", "x@1412", 0), |
| TEST ("x@872", "x@1412", "x@2284", 0), |
| TEST ("x@1411", "x@2284", "x@3695", 0), |
| TEST ("x@1412", "x@2284", "x@3696", 0), |
| |
| TEST ("", 0, "", 0), |
| TEST ("abc", 0, "abcabc", 0), |
| TEST ("a<U0>@2bc", 0, "a<U0>@2bca<U0>@2bc", 0), |
| TEST ("<U0>@2abc", 0, "<U0>@2abc<U0>@2abc", 0), |
| TEST ("abc<U0>@2", 0, "abc<U0>@2abc<U0>@2", 0), |
| TEST ("x@2048", 0, "x@4096", 0), |
| |
| TEST ("last", "test", "lasttest", 0) |
| }; |
| |
| /**************************************************************************/ |
| |
| // exercises: |
| // operator+= (value_type) |
| static const StringTestCase |
| val_test_cases [] = { |
| |
| #undef TEST |
| #define TEST(str, val, res, bthrow) \ |
| { __LINE__, -1, -1, -1, -1, val, str, sizeof str - 1, 0, 0, \ |
| res, sizeof res - 1, bthrow } |
| |
| // +---------------------------------- controlled sequence |
| // | +----------------- character to be appended |
| // | | +------------- expected result sequence |
| // | | | +- exception info |
| // | | | | 0 - no exception |
| // | | | | 1 - length_error |
| // | | | | |
| // | | | +----+ |
| // V V V V |
| TEST ("ab", 'c', "abc", 0), |
| |
| TEST ("", 'a', "a", 0), |
| TEST ("", '\0', "<U0>", 0), |
| |
| TEST ("<U0>", 'a', "<U0>a", 0), |
| TEST ("<U0>", '\0', "<U0>@2", 0), |
| |
| TEST ("cde", 'a', "cdea", 0), |
| TEST ("abc", '\0', "abc<U0>", 0), |
| |
| TEST ("a<U0>b<U0>@2c", '\0', "a<U0>b<U0>@2c<U0>", 0), |
| TEST ("<U0>ab<U0>@2c", '\0', "<U0>ab<U0>@2c<U0>", 0), |
| TEST ("a<U0>bc<U0>@2", 'a', "a<U0>bc<U0>@2a", 0), |
| |
| TEST ("x@127", 'x', "x@128", 0), |
| TEST ("x@206", 'x', "x@207", 0), |
| TEST ("x@333", 'x', "x@334", 0), |
| TEST ("x@539", 'x', "x@540", 0), |
| TEST ("x@1411", 'x', "x@1412", 0), |
| TEST ("x@2283", 'x', "x@2284", 0), |
| TEST ("x@3694", 'x', "x@3695", 0), |
| TEST ("x@540", 'x', "x@541", 0), |
| |
| TEST ("last", 't', "lastt", 0) |
| }; |
| |
| /**************************************************************************/ |
| |
| template <class charT, class Traits, class Allocator> |
| void test_op_plus_eq (charT, Traits*, Allocator*, |
| const StringFunc &func, |
| const StringTestCase &tcase) |
| { |
| typedef std::basic_string <charT, Traits, Allocator> String; |
| typedef typename String::iterator StringIter; |
| typedef typename UserTraits<charT>::MemFun UTMemFun; |
| |
| static const std::size_t BUFSIZE = 256; |
| |
| static charT wstr_buf [BUFSIZE]; |
| static charT warg_buf [BUFSIZE]; |
| |
| std::size_t str_len = sizeof wstr_buf / sizeof *wstr_buf; |
| std::size_t arg_len = sizeof warg_buf / sizeof *warg_buf; |
| |
| charT* wstr = rw_expand (wstr_buf, tcase.str, tcase.str_len, &str_len); |
| charT* warg = rw_expand (warg_buf, tcase.arg, tcase.arg_len, &arg_len); |
| |
| static charT wres_buf [BUFSIZE]; |
| std::size_t res_len = sizeof wres_buf / sizeof *wres_buf; |
| charT* wres = rw_expand (wres_buf, tcase.res, tcase.nres, &res_len); |
| |
| // construct the string object to be modified |
| // and the (possibly unused) argument string |
| /* const */ String str (wstr, str_len); |
| const String arg (warg, arg_len); |
| |
| if (wstr != wstr_buf) |
| delete[] wstr; |
| |
| if (warg != warg_buf) |
| delete[] warg; |
| |
| wstr = 0; |
| warg = 0; |
| |
| // save the state of the string object before the call |
| // to detect wxception safety violations (changes to |
| // the state of the object after an exception) |
| const StringState str_state (rw_get_string_state (str)); |
| |
| const charT* const arg_ptr = tcase.arg ? arg.c_str () : str.c_str (); |
| const String& arg_str = tcase.arg ? arg : str; |
| const charT arg_val = make_char (char (tcase.val), (charT*)0); |
| |
| std::size_t total_length_calls = 0; |
| std::size_t n_length_calls = 0; |
| std::size_t* const rg_calls = rw_get_call_counters ((Traits*)0, (charT*)0); |
| |
| if (rg_calls) |
| total_length_calls = rg_calls [UTMemFun::length]; |
| |
| rwt_free_store* const pst = rwt_get_free_store (0); |
| SharedAlloc* const pal = SharedAlloc::instance (); |
| |
| // iterate for`throw_after' starting at the next call to operator new, |
| // forcing each call to throw an exception, until the function finally |
| // succeeds (i.e, no exception is thrown) |
| std::size_t throw_count; |
| for (throw_count = 0; ; ++throw_count) { |
| |
| // (name of) expected and caught exception |
| const char* expected = 0; |
| const char* caught = 0; |
| |
| #ifndef _RWSTD_NO_EXCEPTIONS |
| |
| if (1 == tcase.bthrow) |
| expected = exceptions [2]; // length_error |
| else if (0 == tcase.bthrow) { |
| // by default excercise the exception safety of the function |
| // by iteratively inducing an exception at each call to operator |
| // new or Allocator::allocate() until the call succeeds |
| expected = exceptions [3]; // bad_alloc |
| *pst->throw_at_calls_ [0] = pst->new_calls_ [0] + throw_count + 1; |
| pal->throw_at_calls_ [pal->m_allocate] = |
| pal->throw_at_calls_ [pal->m_allocate] + throw_count + 1; |
| } |
| else { |
| // exceptions disabled for this test case |
| } |
| |
| #else // if defined (_RWSTD_NO_EXCEPTIONS) |
| |
| if (tcase.bthrow) { |
| if (wres != wres_buf) |
| delete[] wres; |
| |
| return; |
| } |
| |
| #endif // _RWSTD_NO_EXCEPTIONS |
| |
| // start checking for memory leaks |
| rw_check_leaks (str.get_allocator ()); |
| |
| try { |
| |
| // pointer to the returned reference |
| const String* ret_ptr = 0; |
| |
| switch (func.which_) { |
| |
| case OpPlusEq (cptr): |
| ret_ptr = &str.operator+= (arg_ptr); |
| if (rg_calls) |
| n_length_calls = rg_calls [UTMemFun::length]; |
| break; |
| |
| case OpPlusEq (cstr): |
| ret_ptr = &str.operator+= (arg_str); |
| break; |
| |
| case OpPlusEq (val): |
| ret_ptr = &str.operator+= (arg_val); |
| break; |
| |
| default: |
| RW_ASSERT ("test logic error: unknown operator += overload"); |
| return; |
| } |
| |
| // verify that the reference returned from the function |
| // refers to the modified string object (i.e., *this |
| // within the function) |
| const std::ptrdiff_t ret_off = ret_ptr - &str; |
| |
| // verify the returned value |
| rw_assert (0 == ret_off, 0, tcase.line, |
| "line %d. %{$FUNCALL} returned invalid reference, " |
| "offset is %td", __LINE__, ret_off); |
| |
| // verfiy that strings length are equal |
| rw_assert (res_len == str.size (), 0, tcase.line, |
| "line %d. %{$FUNCALL} expected %{#*s} " |
| "with length %zu, got %{/*.*Gs} with length %zu", |
| __LINE__, int (tcase.nres), tcase.res, res_len, |
| int (sizeof (charT)), int (str.size ()), |
| str.c_str (), str.size ()); |
| |
| if (res_len == str.size ()) { |
| // if the result length matches the expected length |
| // (and only then), also verify that the modified |
| // string matches the expected result |
| const std::size_t match = |
| rw_match (tcase.res, str.c_str(), str.size ()); |
| |
| rw_assert (match == res_len, 0, tcase.line, |
| "line %d. %{$FUNCALL} expected %{#*s}, " |
| "got %{/*.*Gs}, difference at offset %zu", |
| __LINE__, int (tcase.nres), tcase.res, |
| int (sizeof (charT)), int (str.size ()), |
| str.c_str (), match); |
| } |
| |
| // verify that Traits::length was used |
| if (OpPlusEq (cptr) == func.which_ && rg_calls) { |
| rw_assert (n_length_calls - total_length_calls > 0, |
| 0, tcase.line, "line %d. %{$FUNCALL} doesn't " |
| "use traits::length()", __LINE__); |
| } |
| } |
| |
| #ifndef _RWSTD_NO_EXCEPTIONS |
| |
| catch (const std::length_error &ex) { |
| caught = exceptions [2]; |
| rw_assert (caught == expected, 0, tcase.line, |
| "line %d. %{$FUNCALL} %{?}expected %s,%{:}" |
| "unexpectedly%{;} caught std::%s(%#s)", |
| __LINE__, 0 != expected, expected, caught, ex.what ()); |
| } |
| catch (const std::bad_alloc &ex) { |
| caught = exceptions [3]; |
| rw_assert (0 == tcase.bthrow, 0, tcase.line, |
| "line %d. %{$FUNCALL} %{?}expected %s,%{:}" |
| "unexpectedly%{;} caught std::%s(%#s)", |
| __LINE__, 0 != expected, expected, caught, ex.what ()); |
| } |
| catch (const std::exception &ex) { |
| caught = exceptions [4]; |
| 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); |
| |
| if (0 == tcase.bthrow) { |
| // 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; |
| } |
| } |
| 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); |
| } |
