sal/qa/rtl/strings/test_oustring_concat.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 // activate support for detecting errors instead of getting compile errors
  11 #define RTL_STRING_UNITTEST_CONCAT
  12 extern bool rtl_string_unittest_invalid_concat;
  13
  14 #include <sal/types.h>
  15 #include <cppunit/TestAssert.h>
  16 #include <cppunit/TestFixture.h>
  17 #include <cppunit/extensions/HelperMacros.h>
  18
  19 #include <rtl/ustring.hxx>
  20 #include <rtl/ustrbuf.hxx>
  21 #include <rtl/string.hxx>
  22 #include <rtl/strbuf.hxx>
  23
  24 #include <string>
  25 #include <typeinfo>
  26
  27 using namespace rtl;
  28
  29 template<> inline std::string CppUnit::assertion_traits<std::type_info>::toString(
  30     std::type_info const & x)
  31 {
  32     return x.name();
  33 }
  34
  35 namespace test::oustring {
  36
  37 class StringConcat : public CppUnit::TestFixture
  38 {
  39 private:
  40     void checkConcat();
  41     void checkConcatAsciiL();
  42     void checkEnsureCapacity();
  43     void checkAppend();
  44     void checkInvalid();
  45
  46 CPPUNIT_TEST_SUITE(StringConcat);
  47 CPPUNIT_TEST(checkConcat);
  48 CPPUNIT_TEST(checkConcatAsciiL);
  49 CPPUNIT_TEST(checkEnsureCapacity);
  50 CPPUNIT_TEST(checkAppend);
  51 CPPUNIT_TEST(checkInvalid);
  52 CPPUNIT_TEST_SUITE_END();
  53 };
  54
  55 void test::oustring::StringConcat::checkConcat()
  56 {
  57 // All the extra () are to protect commas against being treated as separators of macro arguments.
  58     CPPUNIT_ASSERT_EQUAL( OUString(), OUString(OUString() + OUString()));
  59     CPPUNIT_ASSERT_EQUAL( u"foobar"_ustr, OUString( u"foo"_ustr + u"bar"_ustr));
  60     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, OUString > )), typeid( u"foo"_ustr + u"bar"_ustr));
  61     CPPUNIT_ASSERT_EQUAL( u"foobar"_ustr, OUString( u"foo"_ustr + "bar" ));
  62     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, const char[ 4 ] > )), typeid( u"foo"_ustr + "bar" ));
  63     CPPUNIT_ASSERT_EQUAL( u"foobarbaz"_ustr, OUString( u"foo"_ustr + "bar" + "baz" ));
  64     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< OUString, const char[ 4 ] >, const char[ 4 ] > )), typeid( u"foo"_ustr + "bar" + "baz" ));
  65     CPPUNIT_ASSERT_EQUAL( u"foobar"_ustr, OUString( OUStringBuffer( "foo" ) + "bar" ));
  66     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringBuffer, const char[ 4 ] > )), typeid( OUStringBuffer( "foo" ) + "bar" ));
  67     CPPUNIT_ASSERT_EQUAL( u"foobar"_ustr, OUString( OUStringLiteral( u"foo" ) + "bar" ));
  68     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringLiteral<4>, const char[ 4 ] > )), typeid( OUStringLiteral( u"foo" ) + "bar" ));
  69     const char d1[] = "xyz";
  70     CPPUNIT_ASSERT_EQUAL( u"fooxyz"_ustr, OUString( u"foo"_ustr + d1 ));
  71     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, const char[ 4 ] > )), typeid( u"foo"_ustr + d1 ));
  72     const sal_Unicode* d2 = u"xyz";
  73     CPPUNIT_ASSERT_EQUAL( u"fooxyz"_ustr, OUString( u"foo"_ustr + d2 ));
  74     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, const sal_Unicode* > )), typeid( u"foo"_ustr + d2 ));
  75     const sal_Unicode d3[] = u"xyz";
  76     CPPUNIT_ASSERT_EQUAL( u"foobar"_ustr, OUString( OUString::Concat( "foo" ) + "bar" ));
  77     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< rtl::OUStringConcatMarker, const char[ 4 ] >, const char[ 4 ] > )), typeid( OUString::Concat( "foo" ) + "bar" ));
  78     CPPUNIT_ASSERT_EQUAL( u"xyzbar"_ustr, OUString( OUString::Concat( d1 ) + "bar" ));
  79     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< rtl::OUStringConcatMarker, const char[ 4 ] >, const char[ 4 ] > )), typeid( OUString::Concat( d1 ) + "bar" ));
  80     CPPUNIT_ASSERT_EQUAL( u"foobar"_ustr, OUString( OUString::Concat( u"foo" ) + "bar" ));
  81     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< rtl::OUStringConcatMarker, const sal_Unicode[ 4 ] >, const char[ 4 ] > )), typeid( OUString::Concat( u"foo" ) + "bar" ));
  82     CPPUNIT_ASSERT_EQUAL( u"xyzbar"_ustr, OUString( OUString::Concat( d2 ) + "bar" ));
  83     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< rtl::OUStringConcatMarker, const sal_Unicode* >, const char[ 4 ] > )), typeid( OUString::Concat( d2 ) + "bar" ));
  84     CPPUNIT_ASSERT_EQUAL( u"xyzbar"_ustr, OUString( OUString::Concat( d3 ) + "bar" ));
  85     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< rtl::OUStringConcatMarker, const sal_Unicode[ 4 ] >, const char[ 4 ] > )), typeid( OUString::Concat( d3 ) + "bar" ));
  86
  87     CPPUNIT_ASSERT_EQUAL( u"num10"_ustr, OUString( u"num"_ustr + OUString::number( 10 )));
  88     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, StringNumber< sal_Unicode, RTL_USTR_MAX_VALUEOFINT32 > > )), typeid( u"num"_ustr + OUString::number( 10 )));
  89     CPPUNIT_ASSERT_EQUAL( u"num10"_ustr, OUString( u"num"_ustr + OUString::number( 10L )));
  90     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, StringNumber< sal_Unicode, RTL_USTR_MAX_VALUEOFINT64 > > )), typeid( u"num"_ustr + OUString::number( 10L )));
  91     CPPUNIT_ASSERT_EQUAL( u"num10"_ustr, OUString( u"num"_ustr + OUString::number( 10ULL )));
  92     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, StringNumber< sal_Unicode, RTL_USTR_MAX_VALUEOFUINT64 > > )), typeid( u"num"_ustr + OUString::number( 10ULL )));
  93     CPPUNIT_ASSERT_EQUAL( u"num10.5"_ustr, OUString( u"num"_ustr + OUString::number( 10.5f )));
  94     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, OUString > )), typeid( u"num"_ustr + OUString::number( 10.5f )));
  95     CPPUNIT_ASSERT_EQUAL( u"num10.5"_ustr, OUString( u"num"_ustr + OUString::number( 10.5 )));
  96     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, OUString > )), typeid( u"num"_ustr + OUString::number( 10.5 )));
  97 }
  98
  99 void test::oustring::StringConcat::checkConcatAsciiL()
 100 {
 101     {
 102         OUString s(u"foo"_ustr);
 103         s += "";
 104         CPPUNIT_ASSERT_EQUAL(u"foo"_ustr, s);
 105     }
 106     {
 107         OUString s(u"foo"_ustr);
 108         s += "bar";
 109         CPPUNIT_ASSERT_EQUAL(u"foobar"_ustr, s);
 110     }
 111 }
 112
 113 void test::oustring::StringConcat::checkEnsureCapacity()
 114 {
 115     rtl_uString* str = nullptr;
 116     rtl_uString_newFromLiteral( &str, "test", strlen( "test" ), 0 );
 117     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
 118     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 119
 120     rtl_uString* oldStr = str;
 121     rtl_uString_ensureCapacity( &str, 4 ); // should be no-op
 122     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
 123     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 124     CPPUNIT_ASSERT_EQUAL( str, oldStr );
 125
 126     rtl_uString_acquire( oldStr );
 127     CPPUNIT_ASSERT_EQUAL( 2, int( str->refCount ));
 128     rtl_uString_ensureCapacity( &str, 4 );
 129     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
 130     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 131     // a copy was forced because of refcount
 132     CPPUNIT_ASSERT( oldStr != str );
 133     CPPUNIT_ASSERT_EQUAL( static_cast<sal_Int32>(0), rtl_ustr_compare( oldStr->buffer, str->buffer ) );
 134     CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
 135     rtl_uString_release( str );
 136     str = oldStr;
 137
 138     rtl_uString_acquire( oldStr );
 139     rtl_uString_ensureCapacity( &str, 1024 );
 140     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length ); // size is still 4
 141     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 142     CPPUNIT_ASSERT( oldStr != str );
 143     CPPUNIT_ASSERT_EQUAL( static_cast<sal_Int32>(0), rtl_ustr_compare( oldStr->buffer, str->buffer ) );
 144     CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
 145     // but there should be extra capacity
 146     for( int i = 0;
 147          i < 20;
 148          ++i )
 149         str->buffer[ str->length + i ] = '0';
 150     str->length += 20;
 151     rtl_uString_release( str );
 152     rtl_uString_release( oldStr );
 153 }
 154
 155 void test::oustring::StringConcat::checkAppend()
 156 {
 157     OUString str( u"foo"_ustr );
 158     str += OUStringLiteral( u"bar" ) + "baz";
 159     CPPUNIT_ASSERT_EQUAL( u"foobarbaz"_ustr, str );
 160     OUStringBuffer buf( "foo" );
 161     buf.append( OUStringLiteral( u"bar" ) + "baz" );
 162     CPPUNIT_ASSERT_EQUAL( u"foobarbaz"_ustr, buf.makeStringAndClear());
 163 }
 164
 165 #define INVALID_CONCAT( expression ) \
 166     ( \
 167     rtl_string_unittest_invalid_concat = false, \
 168     ( void ) OUString( expression ), \
 169     rtl_string_unittest_invalid_concat )
 170
 171 void test::oustring::StringConcat::checkInvalid()
 172 {
 173     CPPUNIT_ASSERT( !INVALID_CONCAT( OUString() + OUString()));
 174     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + "b"_ostr));
 175     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + OStringBuffer( "b" )));
 176     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + static_cast<const char*>("b") ));
 177     char d[] = "b";
 178     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + d ));
 179     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + static_cast<char*>(d) ));
 180     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + OStringLiteral( "b" )));
 181     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + OString::Concat( "b" )));
 182     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + 1 ));
 183     rtl_String* rs = nullptr;
 184     rtl_uString* rus = nullptr;
 185     CPPUNIT_ASSERT( INVALID_CONCAT( u"b"_ustr + rs ));
 186     CPPUNIT_ASSERT( INVALID_CONCAT( u"b"_ustr + rus ));
 187     CPPUNIT_ASSERT( INVALID_CONCAT( u"a"_ustr + OString::number( 10 )));
 188     CPPUNIT_ASSERT( INVALID_CONCAT( OUString::number( 0 ) + OString::number( 10 )));
 189
 190 #if 0
 191     // Should fail to compile, to avoid use of OUStringConcat lvalues that
 192     // contain dangling references to temporaries:
 193     auto const conc = OUStringLiteral("foo") + "bar";
 194     (void) OUString(conc);
 195 #endif
 196 }
 197
 198 } // namespace
 199
 200 CPPUNIT_TEST_SUITE_REGISTRATION(test::oustring::StringConcat);
 201
 202 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */