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libreoffice/sal/qa/rtl/strings/test_ostring_concat.cxx
Daniel Baumann 8e63e14cf6
Adding upstream version 4:25.2.3. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 16:20:04 +02:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
// activate support for detecting errors instead of getting compile errors
#define RTL_STRING_UNITTEST_CONCAT
#include <sal/types.h>
#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <rtl/string.hxx>
#include <rtl/strbuf.hxx>
#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>
#include <string>
#include <typeinfo>
bool rtl_string_unittest_invalid_concat = false;
using namespace rtl;
template<> inline std::string CppUnit::assertion_traits<std::type_info>::toString(
std::type_info const & x)
{
return x.name();
}
namespace test::ostring {
class StringConcat : public CppUnit::TestFixture
{
private:
void checkConcat();
void checkEnsureCapacity();
void checkAppend();
void checkInvalid();
CPPUNIT_TEST_SUITE(StringConcat);
CPPUNIT_TEST(checkConcat);
CPPUNIT_TEST(checkEnsureCapacity);
CPPUNIT_TEST(checkAppend);
CPPUNIT_TEST(checkInvalid);
CPPUNIT_TEST_SUITE_END();
};
void test::ostring::StringConcat::checkConcat()
{
// All the extra () are to protect commas against being treated as separators of macro arguments.
CPPUNIT_ASSERT_EQUAL( OString(), OString(OString() + OString()));
CPPUNIT_ASSERT_EQUAL( "foobar"_ostr, OString( "foo"_ostr + "bar"_ostr));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, OString > )), typeid( "foo"_ostr + "bar"_ostr));
CPPUNIT_ASSERT_EQUAL( "foobar"_ostr, OString( "foo"_ostr + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, const char[ 4 ] > )), typeid( "foo"_ostr + "bar" ));
CPPUNIT_ASSERT_EQUAL( "foobarbaz"_ostr, OString( "foo"_ostr + "bar" + "baz" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OString, const char[ 4 ] >, const char[ 4 ] > )), typeid( "foo"_ostr + "bar" + "baz" ));
CPPUNIT_ASSERT_EQUAL( "foobar"_ostr, OString( OStringBuffer( "foo" ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringBuffer, const char[ 4 ] > )), typeid( OStringBuffer( "foo" ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "foobar"_ostr, OString( OStringLiteral( "foo" ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringLiteral<4>, const char[ 4 ] > )), typeid( OStringLiteral( "foo" ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "foobar"_ostr, OString( OStringLiteral( "foo" ) + static_cast<const char*>("bar") ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringLiteral<4>, const char* > )), typeid( OStringLiteral( "foo" ) + static_cast<const char*>("bar") ));
const char d1[] = "xyz";
char d2[] = "abc";
const char* d3 = d1;
char* d4 = d2;
CPPUNIT_ASSERT_EQUAL( "fooxyz"_ostr, OString( "foo"_ostr + d1 ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, const char[ 4 ] > )), typeid( "foo"_ostr + d1 ));
CPPUNIT_ASSERT_EQUAL( "fooabc"_ostr, OString( "foo"_ostr + d2 ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, char[ 4 ] > )), typeid( "foo"_ostr + d2 ));
CPPUNIT_ASSERT_EQUAL( "fooxyz"_ostr, OString( "foo"_ostr + d3 ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, const char* > )), typeid( "foo"_ostr + d3 ));
CPPUNIT_ASSERT_EQUAL( "fooabc"_ostr, OString( "foo"_ostr + d4 ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, char* > )), typeid( "foo"_ostr + d4 ));
CPPUNIT_ASSERT_EQUAL( "fooabc"_ostr, OString( "foo"_ostr + d4 ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, char* > )), typeid( "foo"_ostr + d4 ));
CPPUNIT_ASSERT_EQUAL( "foobar"_ostr, OString( OString::Concat( "foo" ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OStringConcatMarker, const char[ 4 ] >, const char[ 4 ] > )), typeid( OString::Concat( "foo" ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "xyzbar"_ostr, OString( OString::Concat( d1 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OStringConcatMarker, const char[ 4 ] >, const char[ 4 ] > )), typeid( OString::Concat( d1 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "abcbar"_ostr, OString( OString::Concat( d2 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OStringConcatMarker, char[ 4 ] >, const char[ 4 ] > )), typeid( OString::Concat( d2 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "xyzbar"_ostr, OString( OString::Concat( d3 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OStringConcatMarker, const char* >, const char[ 4 ] > )), typeid( OString::Concat( d3 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "abcbar"_ostr, OString( OString::Concat( d4 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OStringConcatMarker, char* >, const char[ 4 ] > )), typeid( OString::Concat( d4 ) + "bar" ));
CPPUNIT_ASSERT_EQUAL( "num10"_ostr, OString( "num"_ostr + OString::number( 10 )));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, StringNumber< char, RTL_STR_MAX_VALUEOFINT32 > > )), typeid( "num"_ostr + OString::number( 10 )));
CPPUNIT_ASSERT_EQUAL( "num10"_ostr, OString( "num"_ostr + OString::number( 10L )));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, StringNumber< char, RTL_STR_MAX_VALUEOFINT64 > > )), typeid( "num"_ostr + OString::number( 10L )));
CPPUNIT_ASSERT_EQUAL( "num10"_ostr, OString( "num"_ostr + OString::number( 10ULL )));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, StringNumber< char, RTL_STR_MAX_VALUEOFUINT64 > > )), typeid( "num"_ostr + OString::number( 10ULL )));
CPPUNIT_ASSERT_EQUAL( "num10.5"_ostr, OString( "num"_ostr + OString::number( 10.5f )));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, OString > )), typeid( "num"_ostr + OString::number( 10.5f )));
CPPUNIT_ASSERT_EQUAL( "num10.5"_ostr, OString( "num"_ostr + OString::number( 10.5 )));
CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, OString > )), typeid( "num"_ostr + OString::number( 10.5 )));
}
void test::ostring::StringConcat::checkEnsureCapacity()
{
rtl_String* str = nullptr;
rtl_string_newFromLiteral( &str, "test", strlen( "test" ), 0 );
CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
rtl_String* oldStr = str;
rtl_string_ensureCapacity( &str, 4 ); // should be no-op
CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
CPPUNIT_ASSERT_EQUAL( str, oldStr );
rtl_string_acquire( oldStr );
CPPUNIT_ASSERT_EQUAL( 2, int( str->refCount ));
rtl_string_ensureCapacity( &str, 4 );
CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
// a copy was forced because of refcount
CPPUNIT_ASSERT( oldStr != str );
CPPUNIT_ASSERT_EQUAL( 0, strcmp( oldStr->buffer, str->buffer ) );
CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
rtl_string_release( str );
str = oldStr;
rtl_string_acquire( oldStr );
rtl_string_ensureCapacity( &str, 1024 );
CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length ); // size is still 4
CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
CPPUNIT_ASSERT( oldStr != str );
CPPUNIT_ASSERT_EQUAL( 0, strcmp( oldStr->buffer, str->buffer ) );
CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
strcpy( str->buffer, "01234567890123456789" ); // but there should be extra capacity
str->length += 20;
rtl_string_release( str );
rtl_string_release( oldStr );
}
void test::ostring::StringConcat::checkAppend()
{
OString str( "foo"_ostr );
str += OStringLiteral( "bar" ) + "baz";
CPPUNIT_ASSERT_EQUAL( "foobarbaz"_ostr, str );
OStringBuffer buf( "foo" );
buf.append( OStringLiteral( "bar" ) + "baz" );
CPPUNIT_ASSERT_EQUAL( "foobarbaz"_ostr, buf.makeStringAndClear());
}
#define INVALID_CONCAT( expression ) \
( \
rtl_string_unittest_invalid_concat = false, \
( void ) OString( expression ), \
rtl_string_unittest_invalid_concat )
void test::ostring::StringConcat::checkInvalid()
{
CPPUNIT_ASSERT( !INVALID_CONCAT( OString() + OString()));
CPPUNIT_ASSERT( INVALID_CONCAT( "a"_ostr + u"b"_ustr));
CPPUNIT_ASSERT( INVALID_CONCAT( "a"_ostr + OUStringBuffer( "b" )));
CPPUNIT_ASSERT( INVALID_CONCAT( "a"_ostr + OUStringLiteral( u"b" )));
CPPUNIT_ASSERT( INVALID_CONCAT( "a"_ostr + OUString::Concat( u"b" )));
CPPUNIT_ASSERT( INVALID_CONCAT( "a"_ostr + 1 ));
rtl_String* rs = nullptr;
rtl_uString* rus = nullptr;
CPPUNIT_ASSERT( INVALID_CONCAT( u"b"_ustr + rs ));
CPPUNIT_ASSERT( INVALID_CONCAT( u"b"_ustr + rus ));
CPPUNIT_ASSERT( INVALID_CONCAT( "a"_ostr + OUString::number( 10 )));
CPPUNIT_ASSERT( INVALID_CONCAT( OString::number( 0 ) + OUString::number( 10 )));
#if 0
// Should fail to compile, to avoid use of OStringConcat lvalues that
// contain dangling references to temporaries:
auto const conc = OStringLiteral("foo") + "bar";
(void) OString(conc);
#endif
}
} // namespace
CPPUNIT_TEST_SUITE_REGISTRATION(test::ostring::StringConcat);
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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