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/TestFixture.h>
  16 #include <cppunit/extensions/HelperMacros.h>
  17
  18 #include <rtl/ustring.hxx>
  19 #include <rtl/ustrbuf.hxx>
  20 #include <rtl/string.hxx>
  21 #include <rtl/strbuf.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 oustring {
  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::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( OUString( "foobar" ), OUString( OUString( "foo" ) + OUString( "bar" )));
  60     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, OUString > )), typeid( OUString( "foo" ) + OUString( "bar" )));
  61     CPPUNIT_ASSERT_EQUAL( OUString( "foobar" ), OUString( OUString( "foo" ) + "bar" ));
  62     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, const char[ 4 ] > )), typeid( OUString( "foo" ) + "bar" ));
  63     CPPUNIT_ASSERT_EQUAL( OUString( "foobarbaz" ), OUString( OUString( "foo" ) + "bar" + "baz" ));
  64     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringConcat< OUString, const char[ 4 ] >, const char[ 4 ] > )), typeid( OUString( "foo" ) + "bar" + "baz" ));
  65     CPPUNIT_ASSERT_EQUAL( OUString( "foobar" ), OUString( OUStringLiteral( "foo" ) + "bar" ));
  66     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringLiteral, const char[ 4 ] > )), typeid( OUStringLiteral( "foo" ) + "bar" ));
  67     const char d1[] = "xyz";
  68     CPPUNIT_ASSERT_EQUAL( OUString( "fooxyz" ), OUString( OUString( "foo" ) + d1 ));
  69     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUString, const char[ 4 ] > )), typeid( OUString( "foo" ) + d1 ));
  70     CPPUNIT_ASSERT_EQUAL( OUString( "foobar" ), OUString( OUStringBuffer( "foo" ) + OUString( "bar" )));
  71     CPPUNIT_ASSERT_EQUAL(( typeid( OUStringConcat< OUStringBuffer, OUString > )), typeid( OUStringBuffer( "foo" ) + OUString( "bar" )));
  72 }
  73
  74 void test::oustring::StringConcat::checkEnsureCapacity()
  75 {
  76     rtl_uString* str = NULL;
  77     rtl_uString_newFromLiteral( &str, "test", strlen( "test" ), 0 );
  78     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
  79     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
  80
  81     rtl_uString* oldStr = str;
  82     rtl_uString_ensureCapacity( &str, 4 ); // should be no-op
  83     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
  84     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
  85     CPPUNIT_ASSERT( oldStr == str );
  86
  87     rtl_uString_acquire( oldStr );
  88     CPPUNIT_ASSERT_EQUAL( 2, int( str->refCount ));
  89     rtl_uString_ensureCapacity( &str, 4 );
  90     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
  91     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
  92     // a copy was forced because of refcount
  93     CPPUNIT_ASSERT( oldStr != str );
  94     CPPUNIT_ASSERT( rtl_ustr_compare( oldStr->buffer, str->buffer ) == 0 );
  95     CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
  96     rtl_uString_release( str );
  97     str = oldStr;
  98
  99     rtl_uString_acquire( oldStr );
 100     rtl_uString_ensureCapacity( &str, 1024 );
 101     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length ); // size is still 4
 102     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
 103     CPPUNIT_ASSERT( oldStr != str );
 104     CPPUNIT_ASSERT( rtl_ustr_compare( oldStr->buffer, str->buffer ) == 0 );
 105     CPPUNIT_ASSERT_EQUAL( 1, int( oldStr->refCount ));
 106     // but there should be extra capacity
 107     for( int i = 0;
 108          i < 20;
 109          ++i )
 110         str->buffer[ str->length + i ] = '0';
 111     str->length += 20;
 112     rtl_uString_release( str );
 113     rtl_uString_release( oldStr );
 114 }
 115
 116 void test::oustring::StringConcat::checkAppend()
 117 {
 118     OUString str( "foo" );
 119     str += OUStringLiteral( "bar" ) + "baz";
 120     CPPUNIT_ASSERT_EQUAL( OUString( "foobarbaz" ), str );
 121     OUStringBuffer buf( "foo" );
 122     buf.append( OUStringLiteral( "bar" ) + "baz" );
 123     CPPUNIT_ASSERT_EQUAL( OUString( "foobarbaz" ), buf.makeStringAndClear());
 124 }
 125
 126 #define INVALID_CONCAT( expression ) \
 127     ( \
 128     rtl_string_unittest_invalid_concat = false, \
 129     ( void ) OUString( expression ), \
 130     rtl_string_unittest_invalid_concat )
 131
 132 void test::oustring::StringConcat::checkInvalid()
 133 {
 134     CPPUNIT_ASSERT( !INVALID_CONCAT( OUString() + OUString()));
 135     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + OString( "b" )));
 136     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + OStringBuffer( "b" )));
 137     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + (const char*) "b" ));
 138     char d[] = "b";
 139     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + d ));
 140     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + (char*)d ));
 141     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + OStringLiteral( "b" )));
 142     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + 1 ));
 143     rtl_String* rs = NULL;
 144     rtl_uString* rus = NULL;
 145     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rs ));
 146     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rus ));
 147 }
 148
 149 }} // namespace
 150
 151 CPPUNIT_TEST_SUITE_REGISTRATION(test::oustring::StringConcat);
 152
 153 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */