sal/qa/rtl/strings/test_ostring_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 bool rtl_string_unittest_invalid_concat = false;
  13
  14 #include <sal/types.h>
  15 #include <cppunit/TestFixture.h>
  16 #include <cppunit/extensions/HelperMacros.h>
  17
  18 #include <rtl/string.hxx>
  19 #include <rtl/strbuf.hxx>
  20 #include <rtl/ustring.hxx>
  21 #include <rtl/ustrbuf.hxx>
  22
  23 #include <typeinfo>
  24
  25 using namespace rtl;
  26
  27 namespace std
  28 {
  29 template< typename charT, typename traits > std::basic_ostream<charT, traits> &
  30 operator <<(
  31     std::basic_ostream<charT, traits> & stream, const std::type_info& info )
  32 {
  33     return stream << info.name();
  34 }
  35 } // namespace
  36
  37 namespace test { namespace ostring {
  38
  39 class StringConcat : public CppUnit::TestFixture
  40 {
  41 private:
  42     void checkConcat();
  43     void checkEnsureCapacity();
  44     void checkAppend();
  45     void checkInvalid();
  46
  47 CPPUNIT_TEST_SUITE(StringConcat);
  48 CPPUNIT_TEST(checkConcat);
  49 CPPUNIT_TEST(checkEnsureCapacity);
  50 CPPUNIT_TEST(checkAppend);
  51 CPPUNIT_TEST(checkInvalid);
  52 CPPUNIT_TEST_SUITE_END();
  53 };
  54
  55 void test::ostring::StringConcat::checkConcat()
  56 {
  57 // All the extra () are to protect commas against being treated as separators of macro arguments.
  58     CPPUNIT_ASSERT_EQUAL( OString(), OString(OString() + OString()));
  59     CPPUNIT_ASSERT_EQUAL( OString( "foobar" ), OString( OString( "foo" ) + OString( "bar" )));
  60     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, OString > )), typeid( OString( "foo" ) + OString( "bar" )));
  61     CPPUNIT_ASSERT_EQUAL( OString( "foobar" ), OString( OString( "foo" ) + "bar" ));
  62     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, const char[ 4 ] > )), typeid( OString( "foo" ) + "bar" ));
  63     CPPUNIT_ASSERT_EQUAL( OString( "foobarbaz" ), OString( OString( "foo" ) + "bar" + "baz" ));
  64     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringConcat< OString, const char[ 4 ] >, const char[ 4 ] > )), typeid( OString( "foo" ) + "bar" + "baz" ));
  65     CPPUNIT_ASSERT_EQUAL( OString( "foobar" ), OString( OStringLiteral( "foo" ) + "bar" ));
  66     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringLiteral, const char[ 4 ] > )), typeid( OStringLiteral( "foo" ) + "bar" ));
  67     CPPUNIT_ASSERT_EQUAL( OString( "foobar" ), OString( OStringLiteral( "foo" ) + (const char*)"bar" ));
  68     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringLiteral, const char* > )), typeid( OStringLiteral( "foo" ) + (const char*)"bar" ));
  69     const char d1[] = "xyz";
  70     char d2[] = "abc";
  71     const char* d3 = d1;
  72     char* d4 = d2;
  73     CPPUNIT_ASSERT_EQUAL( OString( "fooxyz" ), OString( OString( "foo" ) + d1 ));
  74     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, const char[ 4 ] > )), typeid( OString( "foo" ) + d1 ));
  75     CPPUNIT_ASSERT_EQUAL( OString( "fooabc" ), OString( OString( "foo" ) + d2 ));
  76     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, char[ 4 ] > )), typeid( OString( "foo" ) + d2 ));
  77     CPPUNIT_ASSERT_EQUAL( OString( "fooxyz" ), OString( OString( "foo" ) + d3 ));
  78     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, const char* > )), typeid( OString( "foo" ) + d3 ));
  79     CPPUNIT_ASSERT_EQUAL( OString( "fooabc" ), OString( OString( "foo" ) + d4 ));
  80     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OString, char* > )), typeid( OString( "foo" ) + d4 ));
  81 #ifdef __GNUC__
  82     CPPUNIT_ASSERT_EQUAL( OString( "foobar" ), OString( OStringBuffer( "foo" ) + OString( "bar" )));
  83     CPPUNIT_ASSERT_EQUAL(( typeid( OStringConcat< OStringBuffer, OString > )), typeid( OStringBuffer( "foo" ) + OString( "bar" )));
  84 #endif
  85 }
  86
  87 void test::ostring::StringConcat::checkEnsureCapacity()
  88 {
  89     rtl_String* str = NULL;
  90     rtl_string_newFromLiteral( &str, "test", strlen( "test" ), 0 );
  91     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
  92     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
  93
  94     rtl_String* oldStr = str;
  95     rtl_string_ensureCapacity( &str, 4 ); // should be no-op
  96     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
  97     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
  98     CPPUNIT_ASSERT( oldStr == str );
  99
 100     rtl_string_acquire( oldStr );
 101     CPPUNIT_ASSERT_EQUAL( 2, int( str->refCount ));
 102     rtl_string_ensureCapacity( &str, 4 );
 103     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
 104     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 105     // a copy was forced because of refcount
 106     CPPUNIT_ASSERT( oldStr != str );
 107     CPPUNIT_ASSERT( strcmp( oldStr->buffer, str->buffer ) == 0 );
 108     CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
 109     rtl_string_release( str );
 110     str = oldStr;
 111
 112     rtl_string_acquire( oldStr );
 113     rtl_string_ensureCapacity( &str, 1024 );
 114     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length ); // size is still 4
 115     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 116     CPPUNIT_ASSERT( oldStr != str );
 117     CPPUNIT_ASSERT( strcmp( oldStr->buffer, str->buffer ) == 0 );
 118     CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
 119     strcpy( str->buffer, "01234567890123456789" ); // but there should be extra capacity
 120     str->length += 20;
 121     rtl_string_release( str );
 122     rtl_string_release( oldStr );
 123 }
 124
 125 void test::ostring::StringConcat::checkAppend()
 126 {
 127     OString str( "foo" );
 128     str += OStringLiteral( "bar" ) + "baz";
 129     CPPUNIT_ASSERT_EQUAL( OString( "foobarbaz" ), str );
 130     OStringBuffer buf( "foo" );
 131     buf.append( OStringLiteral( "bar" ) + "baz" );
 132     CPPUNIT_ASSERT_EQUAL( OString( "foobarbaz" ), buf.makeStringAndClear());
 133 }
 134
 135 #define INVALID_CONCAT( expression ) \
 136     ( \
 137     rtl_string_unittest_invalid_concat = false, \
 138     ( void ) OString( expression ), \
 139     rtl_string_unittest_invalid_concat )
 140
 141 void test::ostring::StringConcat::checkInvalid()
 142 {
 143     CPPUNIT_ASSERT( !INVALID_CONCAT( OString() + OString()));
 144     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + OUString( "b" )));
 145     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + OUStringBuffer( "b" )));
 146     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + OUStringLiteral( "b" )));
 147     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + 1 ));
 148     rtl_String* rs = NULL;
 149     rtl_uString* rus = NULL;
 150     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rs ));
 151     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rus ));
 152 }
 153
 154 }} // namespace
 155
 156 CPPUNIT_TEST_SUITE_REGISTRATION(test::ostring::StringConcat);
 157
 158 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */