xref: /aosp_15_r20/external/icu/icu4c/source/test/intltest/uobjtest.cpp (revision 0e209d3975ff4a8c132096b14b0e9364a753506e)

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/********************************************************************
 * COPYRIGHT:
 * Copyright (c) 1997-2012, International Business Machines Corporation and
 * others. All Rights Reserved.
 * Copyright (C) 2010 , Yahoo! Inc.
 ********************************************************************/

#include <stdio.h>
#include <string.h>
#include "utypeinfo.h"  // for 'typeid' to work

#include "uobjtest.h"
#include "cmemory.h" // UAlignedMemory

/**
 * Test for UObject, currently only the classID.
 *
 * Usage
 *   TESTCLASSID_NONE_DEFAULT(Foo)
 *      --  Foo is expected to not support "poor man's RTTI".
 *          Beginning with ICU 4.6, we only use compiler RTTI in new class hierarchies.
 *
 *   TESTCLASSID_NONE_CTOR(Foo, (1, 2, 3, status))
 *      -- Combines TESTCLASSID_NONE_DEFAULT() and TESTCLASSID_CTOR().
 *
 *   TESTCLASSID_NONE_FACTORY(Foo, (1, 2, 3, status))
 *      -- Combines TESTCLASSID_NONE_DEFAULT() and TESTCLASSID_FACTORY().
 *
 *   TESTCLASSID_ABSTRACT(Bar)
 *      --  Bar is expected to be abstract. Only the static ID will be tested.
 *
 *   TESTCLASSID_DEFAULT(Foo)
 *      --  Foo will be default-constructed.
 *
 *   TESTCLASSID_CTOR(Foo, (1, 2, 3, status))
 *      -- Second argument is (parenthesized) constructor argument.
 *          Will be called as:   new Foo ( 1, 2, 3, status)  [status is tested]
 *
 *   TESTCLASSID_FACTORY(Foo, fooCreateFunction(status) )
 *      -- call fooCreateFunction.  'status' will be tested & reset
 *
 *   TESTCLASSID_FACTORY_HIDDEN(class, factory)
 *      -- call factory.  Class is not available from a header.
 *      'status' will be tested & reset. This only tests uniqueness.
 */

#define TESTCLASSID_NONE_DEFAULT(c) \
    delete testClassNoClassID(new c, #c, "new " #c)
#define TESTCLASSID_NONE_CTOR(c, x) UPRV_BLOCK_MACRO_BEGIN { \
    delete testClassNoClassID(new c x, #c, "new " #c #x); \
    if(U_FAILURE(status)) { \
        dataerrln(UnicodeString(#c " - new " #x " - got err status ") + UnicodeString(u_errorName(status))); \
        status = U_ZERO_ERROR; \
    } \
} UPRV_BLOCK_MACRO_END
#define TESTCLASSID_NONE_FACTORY(c, f) UPRV_BLOCK_MACRO_BEGIN { \
    delete testClassNoClassID(f, #c, #f); \
    if(U_FAILURE(status)) { \
        dataerrln(UnicodeString(#c " - " #f " - got err status ") + UnicodeString(u_errorName(status))); \
        status = U_ZERO_ERROR; \
    } \
} UPRV_BLOCK_MACRO_END
#define TESTCLASSID_FACTORY(c, f) UPRV_BLOCK_MACRO_BEGIN { \
    delete testClass(f, #c, #f, c ::getStaticClassID()); \
    if(U_FAILURE(status)) { \
        dataerrln(UnicodeString(#c " - " #f " - got err status ") + UnicodeString(u_errorName(status))); \
        status = U_ZERO_ERROR; \
    } \
} UPRV_BLOCK_MACRO_END
#define TESTCLASSID_TRANSLIT(c, t) UPRV_BLOCK_MACRO_BEGIN { \
    delete testClass(Transliterator::createInstance(UnicodeString(t), UTRANS_FORWARD,parseError,status), #c, "Transliterator: " #t, c ::getStaticClassID()); \
    if(U_FAILURE(status)) { \
        dataerrln(UnicodeString(#c " - Transliterator: " #t " - got err status ") + UnicodeString(u_errorName(status))); \
        status = U_ZERO_ERROR; \
    } \
} UPRV_BLOCK_MACRO_END
#define TESTCLASSID_CTOR(c, x) UPRV_BLOCK_MACRO_BEGIN { \
    delete testClass(new c x, #c, "new " #c #x, c ::getStaticClassID()); \
    if(U_FAILURE(status)) { \
        dataerrln(UnicodeString(#c " - new " #x " - got err status ") + UnicodeString(u_errorName(status))); \
        status = U_ZERO_ERROR; \
    } \
} UPRV_BLOCK_MACRO_END
#define TESTCLASSID_DEFAULT(c) \
    delete testClass(new c, #c, "new " #c , c::getStaticClassID())
#define TESTCLASSID_ABSTRACT(c) \
    testClass(nullptr, #c, nullptr, c::getStaticClassID())
#define TESTCLASSID_FACTORY_HIDDEN(c, f) UPRV_BLOCK_MACRO_BEGIN { \
    UObject *objVar = f; \
    delete testClass(objVar, #c, #f, objVar!=nullptr? objVar->getDynamicClassID(): nullptr); \
    if(U_FAILURE(status)) { \
        dataerrln(UnicodeString(#c " - " #f " - got err status ")  + UnicodeString(u_errorName(status))); \
        status = U_ZERO_ERROR; \
    } \
} UPRV_BLOCK_MACRO_END

#define MAX_CLASS_ID 200

static UClassID    ids[MAX_CLASS_ID];
static const char *ids_factory[MAX_CLASS_ID];
static const char *ids_class[MAX_CLASS_ID];
static uint32_t    ids_count = 0;

UObject *UObjectTest::testClass(UObject *obj,
                const char *className, const char *factory,
                UClassID staticID)
{
    uint32_t i;
    UnicodeString what = UnicodeString(className) + " * x= " + UnicodeString(factory?factory:" ABSTRACT ") + "; ";
    UClassID dynamicID = nullptr;

    if(ids_count >= MAX_CLASS_ID) {
        char count[100];
        snprintf(count, sizeof(count), " (currently %d) ", MAX_CLASS_ID);
        errln("FAIL: Fatal: Ran out of IDs! Increase MAX_CLASS_ID." + UnicodeString(count) + what);
        return obj;
    }

    if(obj) {
        dynamicID = obj->getDynamicClassID();
    }

    {
        char tmp[500];
        snprintf(tmp, sizeof(tmp), " [static=%p, dynamic=%p] ", staticID, dynamicID);
        logln(what + tmp);
    }

    if(staticID == nullptr) {
        dataerrln("FAIL: staticID == nullptr! " + what);
    }

    if(factory != nullptr) {  /* nullptr factory means: abstract */
        if(!obj) {
            dataerrln( "FAIL: ==nullptr! " + what);
            return obj;
        }

        if(dynamicID == nullptr) {
            errln("FAIL: dynamicID == nullptr!" + what);
        }

        if(dynamicID != staticID) {
            dataerrln("FAIL: dynamicID != staticID! " + what);
        }
    }

    // Bail out if static ID is null. Error message was already printed.
    if(staticID == nullptr) {
        return obj;
    }

    for(i=0;i<ids_count;i++) {
        if(staticID == ids[i]) {
            if(!strcmp(ids_class[i], className)) {
                logln("OK: ID found is the same as " + UnicodeString(ids_class[i]) + UnicodeString(" *y= ") + ids_factory[i] + what);
                return obj;
            } else {
                errln("FAIL: ID is the same as " + UnicodeString(ids_class[i]) + UnicodeString(" *y= ") + ids_factory[i] + what);
                return obj;
            }
        }
    }

    ids[ids_count] = staticID;
    ids_factory[ids_count] = factory;
    ids_class[ids_count] = className;
    ids_count++;

    return obj;
}

UObject *UObjectTest::testClassNoClassID(UObject *obj, const char *className, const char *factory)
{
    if (!obj) {
        return nullptr;
    }
    UnicodeString what = UnicodeString(className) + " * x= " + UnicodeString(factory?factory:" ABSTRACT ") + "; ";
    UClassID dynamicID = obj->getDynamicClassID();

    {
        char tmp[500];
        snprintf(tmp, sizeof(tmp), " [dynamic=%p] ", dynamicID);
        logln(what + tmp);
    }

    if(factory != nullptr) {  /* nullptr factory means: abstract */
        if(!obj) {
            dataerrln( "FAIL: ==nullptr! " + what);
            return obj;
        }

        if(dynamicID != nullptr) {
            errln("FAIL: dynamicID != nullptr! for non-poor-man's-RTTI " + what);
        }
    }

    return obj;
}

// begin actual #includes for things to be tested
//
// The following script will generate the #includes needed here:
//
//    find common i18n -name '*.h' -print | xargs fgrep ClassID | cut -d: -f1 | cut -d\/ -f2-  | sort | uniq | sed -e 's%.*%#include "&"%'


#include "unicode/utypes.h"

// Internal Things (woo)
#include "cpdtrans.h"
#include "rbt.h"
#include "rbt_data.h"
#include "nultrans.h"
#include "anytrans.h"
#include "esctrn.h"
#include "funcrepl.h"
#include "servnotf.h"
#include "serv.h"
#include "servloc.h"
#include "name2uni.h"
#include "nfsubs.h"
#include "nortrans.h"
#include "quant.h"
#include "remtrans.h"
#include "strmatch.h"
#include "strrepl.h"
#include "titletrn.h"
#include "tolowtrn.h"
#include "toupptrn.h"
#include "unesctrn.h"
#include "uni2name.h"
#include "uvector.h"
#include "uvectr32.h"
#include "currfmt.h"
#include "buddhcal.h"
#include "islamcal.h"
#include "japancal.h"
#include "hebrwcal.h"
#include "persncal.h"
#include "taiwncal.h"
#include "indiancal.h"
#include "chnsecal.h"
#include "windtfmt.h"
#include "winnmfmt.h"
#include "ustrenum.h"
#include "olsontz.h"
#include "reldtfmt.h"

// External Things
#include "unicode/appendable.h"
#include "unicode/alphaindex.h"
#include "unicode/brkiter.h"
#include "unicode/calendar.h"
#include "unicode/caniter.h"
#include "unicode/chariter.h"
#include "unicode/choicfmt.h"
#include "unicode/coleitr.h"
#include "unicode/coll.h"
#include "unicode/curramt.h"
#include "unicode/datefmt.h"
#include "unicode/dcfmtsym.h"
#include "unicode/decimfmt.h"
#include "unicode/dtfmtsym.h"
#include "unicode/dtptngen.h"
#include "unicode/fieldpos.h"
#include "unicode/fmtable.h"
#include "unicode/format.h"
#include "unicode/gregocal.h"
#include "unicode/idna.h"
#include "unicode/locdspnm.h"
#include "unicode/locid.h"
#include "unicode/measunit.h"
#include "unicode/msgfmt.h"
#include "unicode/normlzr.h"
#include "unicode/normalizer2.h"
#include "unicode/numfmt.h"
#include "unicode/parsepos.h"
#include "unicode/plurrule.h"
#include "unicode/plurfmt.h"
#include "unicode/selfmt.h"
#include "unicode/rbbi.h"
#include "unicode/rbnf.h"
#include "unicode/regex.h"
#include "unicode/resbund.h"
#include "unicode/schriter.h"
#include "unicode/simpletz.h"
#include "unicode/smpdtfmt.h"
#include "unicode/sortkey.h"
#include "unicode/stsearch.h"
#include "unicode/tblcoll.h"
#include "unicode/timezone.h"
#include "unicode/tmunit.h"
#include "unicode/translit.h"
#include "unicode/uchriter.h"
#include "unicode/uloc.h"
#include "unicode/unifilt.h"
#include "unicode/unifunct.h"
#include "unicode/uniset.h"
#include "unicode/unistr.h"
#include "unicode/uobject.h"
#include "unicode/usetiter.h"
//#include "unicode/bidi.h"
//#include "unicode/convert.h"

// END includes =============================================================

#define UOBJTEST_TEST_INTERNALS 0   /* do NOT test Internal things - their functions aren't exported on Win32 */

#if !UCONFIG_NO_SERVICE
/* The whole purpose of this class is to expose the constructor, and gain access to the superclasses RTTI. */
class TestLocaleKeyFactory : public LocaleKeyFactory {
public:
    TestLocaleKeyFactory(int32_t coverage) : LocaleKeyFactory(coverage) {}
};
#endif

// Appendable is abstract; we define a subclass to verify that there is no "poor man's RTTI".
class DummyAppendable : public Appendable {
public:
    virtual UBool appendCodeUnit(char16_t /*c*/) override { return true; }
};

void UObjectTest::testIDs()
{
    ids_count = 0;
    UErrorCode status = U_ZERO_ERROR;

    TESTCLASSID_NONE_CTOR(UObject, ());

#if !UCONFIG_NO_TRANSLITERATION || !UCONFIG_NO_FORMATTING
    UParseError parseError;
#endif


#if !UCONFIG_NO_NORMALIZATION
    UnicodeString emptyString;
    TESTCLASSID_CTOR(Normalizer, (emptyString, UNORM_NONE));
    const Normalizer2* nfc_singleton = Normalizer2::getNFCInstance(status);
    UnicodeSet emptySet;
    TESTCLASSID_NONE_CTOR(FilteredNormalizer2, (*nfc_singleton, emptySet));

    TESTCLASSID_FACTORY(CanonicalIterator, new CanonicalIterator(UnicodeString("abc"), status));
#endif
#if !UCONFIG_NO_IDNA
    TESTCLASSID_NONE_FACTORY(IDNA, IDNA::createUTS46Instance(0, status));
#endif
    //TESTCLASSID_DEFAULT(CollationElementIterator);
#if !UCONFIG_NO_COLLATION
    TESTCLASSID_DEFAULT(CollationKey);
    TESTCLASSID_FACTORY(UStringEnumeration, Collator::getKeywords(status));
    //TESTCLASSID_FACTORY_HIDDEN(CollationLocaleListEnumeration, Collator::getAvailableLocales());
#endif
    //TESTCLASSID_FACTORY(CompoundTransliterator, Transliterator::createInstance(UnicodeString("Any-Jex;Hangul-Jamo"), UTRANS_FORWARD, parseError, status));

#if !UCONFIG_NO_FORMATTING
    /* TESTCLASSID_FACTORY(NFSubstitution,  NFSubstitution::makeSubstitution(8, */
    /* TESTCLASSID_DEFAULT(DigitList);  UMemory but not UObject*/
    TESTCLASSID_ABSTRACT(NumberFormat);
    TESTCLASSID_CTOR(RuleBasedNumberFormat, (UnicodeString("%default: -x: minus >>;"), parseError, status));
    TESTCLASSID_CTOR(ChoiceFormat, (UNICODE_STRING_SIMPLE("0#are no files|1#is one file|1<are many files"), status));
    TESTCLASSID_CTOR(MessageFormat, (UnicodeString(), status));
    TESTCLASSID_CTOR(DateFormatSymbols, (status));
    TESTCLASSID_CTOR(PluralFormat, (status));
    TESTCLASSID_CTOR(PluralRules, (status));
    TESTCLASSID_CTOR(SelectFormat, (UnicodeString("feminine {feminineVerbValue} other{otherVerbValue}"), status) );
    TESTCLASSID_FACTORY(DateTimePatternGenerator, DateTimePatternGenerator::createInstance(status));
    TESTCLASSID_FACTORY(RelativeDateFormat, DateFormat::createDateInstance(DateFormat::kFullRelative, Locale::getUS()));
    TESTCLASSID_CTOR(DecimalFormatSymbols, (status));
    TESTCLASSID_DEFAULT(FieldPosition);
    TESTCLASSID_DEFAULT(Formattable);

    TESTCLASSID_FACTORY(MeasureUnit, MeasureUnit::createMeter(status));
    TESTCLASSID_FACTORY(TimeUnit, TimeUnit::createInstance(TimeUnit::UTIMEUNIT_YEAR, status));
    static const char16_t SMALL_STR[] = u"QQQ";
    TESTCLASSID_CTOR(CurrencyAmount, (1.0, SMALL_STR, status));
    TESTCLASSID_CTOR(CurrencyUnit, (SMALL_STR, status));

    TESTCLASSID_NONE_FACTORY(LocaleDisplayNames, LocaleDisplayNames::createInstance("de"));
    TESTCLASSID_FACTORY_HIDDEN(CurrencyFormat, MeasureFormat::createCurrencyFormat(Locale::getUS(), status));
    TESTCLASSID_FACTORY(GregorianCalendar, Calendar::createInstance(Locale("@calendar=gregorian"), status));
    TESTCLASSID_FACTORY(BuddhistCalendar, Calendar::createInstance(Locale("@calendar=buddhist"), status));
    TESTCLASSID_FACTORY(IslamicCalendar, Calendar::createInstance(Locale("@calendar=islamic"), status));
    TESTCLASSID_FACTORY(JapaneseCalendar, Calendar::createInstance(Locale("@calendar=japanese"), status));
    TESTCLASSID_FACTORY(HebrewCalendar, Calendar::createInstance(Locale("@calendar=hebrew"), status));
    TESTCLASSID_FACTORY(PersianCalendar, Calendar::createInstance(Locale("@calendar=persian"), status));
    TESTCLASSID_FACTORY(IndianCalendar, Calendar::createInstance(Locale("@calendar=indian"), status));
    TESTCLASSID_FACTORY(ChineseCalendar, Calendar::createInstance(Locale("@calendar=chinese"), status));
    TESTCLASSID_FACTORY(TaiwanCalendar, Calendar::createInstance(Locale("@calendar=roc"), status));
#if U_PLATFORM_USES_ONLY_WIN32_API
    TESTCLASSID_FACTORY(Win32DateFormat, DateFormat::createDateInstance(DateFormat::kFull, Locale("@compat=host")));
    TESTCLASSID_FACTORY(Win32NumberFormat, NumberFormat::createInstance(Locale("@compat=host"), status));
#endif
#endif

#if !UCONFIG_NO_BREAK_ITERATION && !UCONFIG_NO_FILE_IO
    /* TESTCLASSID_ABSTRACT(BreakIterator); No staticID!  */
    TESTCLASSID_FACTORY(RuleBasedBreakIterator, BreakIterator::createLineInstance("mt",status));
    //TESTCLASSID_FACTORY(DictionaryBasedBreakIterator, BreakIterator::createLineInstance("th",status));

#if !UCONFIG_NO_SERVICE
    TESTCLASSID_FACTORY_HIDDEN(ICULocaleService, BreakIterator::getAvailableLocales());
#endif
#endif

    //TESTCLASSID_DEFAULT(GregorianCalendar);

#if !UCONFIG_NO_TRANSLITERATION
    TESTCLASSID_TRANSLIT(AnyTransliterator, "Any-Latin");
    TESTCLASSID_TRANSLIT(CompoundTransliterator, "Latin-Greek");
    TESTCLASSID_TRANSLIT(EscapeTransliterator, "Any-Hex");
    TESTCLASSID_TRANSLIT(LowercaseTransliterator, "Lower");
    TESTCLASSID_TRANSLIT(NameUnicodeTransliterator, "Name-Any");
    TESTCLASSID_TRANSLIT(NormalizationTransliterator, "NFD");
    TESTCLASSID_TRANSLIT(NullTransliterator, "Null");
    TESTCLASSID_TRANSLIT(RemoveTransliterator, "Remove");
    TESTCLASSID_FACTORY(RuleBasedTransliterator, Transliterator::createFromRules(UnicodeString("abcd"),UnicodeString("a>b;"),UTRANS_FORWARD,parseError,status));
    TESTCLASSID_TRANSLIT(TitlecaseTransliterator, "Title");
    TESTCLASSID_TRANSLIT(UnescapeTransliterator, "Hex-Any");
    TESTCLASSID_TRANSLIT(UnicodeNameTransliterator, "Any-Name");
    TESTCLASSID_TRANSLIT(UppercaseTransliterator, "Upper");
    TESTCLASSID_ABSTRACT(CaseMapTransliterator);
    TESTCLASSID_ABSTRACT(Transliterator);
    TESTCLASSID_FACTORY_HIDDEN(TransliteratorRegistry::Enumeration, Transliterator::getAvailableIDs(status));

#if UOBJTEST_TEST_INTERNALS
    TESTCLASSID_CTOR(Quantifier, (nullptr, 0, 0));
    TESTCLASSID_CTOR(FunctionReplacer, (nullptr,nullptr));
    TESTCLASSID_CTOR(StringMatcher, (UnicodeString("x"), 0,0,0,TransliterationRuleData(status)));
    TESTCLASSID_CTOR(StringReplacer,(UnicodeString(),new TransliterationRuleData(status)));
#endif
#endif

    TESTCLASSID_FACTORY(Locale, new Locale("123"));
    TESTCLASSID_FACTORY_HIDDEN(KeywordEnumeration, Locale("@a=b").createKeywords(status));

    //TESTCLASSID_DEFAULT(NumeratorSubstitution);

#if !UCONFIG_NO_TRANSLITERATION
    TESTCLASSID_DEFAULT(ParsePosition);
#endif


// NO_REG_EX
    //TESTCLASSID_DEFAULT(RegexCompile);
    //TESTCLASSID_DEFAULT(RegexMatcher);
    //TESTCLASSID_DEFAULT(RegexPattern);

    //TESTCLASSID_DEFAULT(ReplaceableGlue);
    TESTCLASSID_FACTORY(ResourceBundle, new ResourceBundle(UnicodeString(), status) );
    //TESTCLASSID_DEFAULT(RuleBasedTransliterator);

    //TESTCLASSID_DEFAULT(SimpleFwdCharIterator);
    //TESTCLASSID_DEFAULT(StringReplacer);
    //TESTCLASSID_DEFAULT(StringSearch);

    //TESTCLASSID_DEFAULT(TestMultipleKeyStringFactory);
    //TESTCLASSID_DEFAULT(TestReplaceable);

#if !UCONFIG_NO_FORMATTING
    TESTCLASSID_ABSTRACT(TimeZone);
    TESTCLASSID_FACTORY(OlsonTimeZone, TimeZone::createTimeZone(UnicodeString("America/Los_Angeles")));
    TESTCLASSID_FACTORY_HIDDEN(KeywordEnumeration, TimeZone::createEnumeration());
#endif

    TESTCLASSID_NONE_DEFAULT(DummyAppendable);
    TESTCLASSID_DEFAULT(UnicodeString);
    TESTCLASSID_CTOR(UnicodeSet, (0, 1));
    TESTCLASSID_ABSTRACT(UnicodeFilter);
    TESTCLASSID_ABSTRACT(UnicodeFunctor);
    TESTCLASSID_CTOR(UnicodeSetIterator,(UnicodeSet(0,1)));
    TESTCLASSID_CTOR(UStack, (status));
    TESTCLASSID_CTOR(UVector, (status));
    TESTCLASSID_CTOR(UVector32, (status));

#if !UCONFIG_NO_SERVICE
    TESTCLASSID_CTOR(SimpleFactory, (nullptr, UnicodeString("foo")));
    TESTCLASSID_DEFAULT(EventListener);
    TESTCLASSID_DEFAULT(ICUResourceBundleFactory);
    //TESTCLASSID_DEFAULT(Key); // does not exist?
    UnicodeString baz("baz");
    UnicodeString bat("bat");
    TESTCLASSID_FACTORY(LocaleKey, LocaleKey::createWithCanonicalFallback(&baz, &bat, LocaleKey::KIND_ANY, status));
    TESTCLASSID_CTOR(SimpleLocaleKeyFactory, (nullptr, UnicodeString("bar"), 8, 12) );
    TESTCLASSID_CTOR(TestLocaleKeyFactory, (42));   // Test replacement for LocaleKeyFactory
//#if UOBJTEST_TEST_INTERNALS
//    TESTCLASSID_CTOR(LocaleKeyFactory, (42));
//#endif
#endif

#if !UCONFIG_NO_COLLATION && !UCONFIG_NO_NORMALIZATION
    TESTCLASSID_NONE_CTOR(AlphabeticIndex, (Locale::getEnglish(), status));
#endif

#ifdef UOBJTEST_DUMP_IDS
    int i;
    for(i=0;i<ids_count;i++) {
        char junk[800];
        snprintf(junk, sizeof(junk), " %4d:\t%p\t%s\t%s\n",
            i, ids[i], ids_class[i], ids_factory[i]);
        logln(UnicodeString(junk));
    }
#endif
}

void UObjectTest::testUMemory() {
    // additional tests for code coverage
#if U_OVERRIDE_CXX_ALLOCATION && U_HAVE_PLACEMENT_NEW
    alignas(UnicodeString) char bytes[sizeof(UnicodeString)];
    UnicodeString *p;
    enum { len=20 };

    p=new(bytes) UnicodeString(len, (UChar32)U'€', len);
    if((void *)p!=(void *)bytes) {
        errln("placement new did not place the object at the expected address");
    }
    if(p->length()!=len || p->charAt(0)!=u'€' || p->charAt(len-1)!=u'€') {
        errln("constructor used with placement new did not work right");
    }

    /*
     * It is not possible to simply say
     *     delete(p, stackMemory);
     * which results in a call to the normal, non-placement delete operator.
     *
     * Via a search on google.com for "c++ placement delete" I found
     * http://cpptips.hyperformix.com/cpptips/placement_del3
     * which says:
     *
     * TITLE: using placement delete
     *
     * (Newsgroups: comp.std.c++, 27 Aug 97)
     *
     * ISJ: [email protected]
     *
     * > I do not completely understand how placement works on operator delete.
     * > ...
     * There is no delete-expression which will invoke a placement
     * form of operator delete. You can still call the function
     * explicitly. Example:
     * ...
     *     // destroy object and delete space manually
     *     p->~T();
     *     operator delete(p, 12);
     *
     * ... so that's what I am doing here.
     * markus 20031216
     */
    // destroy object and delete space manually
    p->~UnicodeString();

    // You normally wouldn't call an operator delete for object placed on the
    // stack with a placement new().
    // This overload of delete is a nop, and is called here for code coverage purposes.
    UnicodeString::operator delete(p, bytes);

    // Jitterbug 4452, for coverage
    UnicodeString *pa = new UnicodeString[2];
    if ( !pa[0].isEmpty() || !pa[1].isEmpty()){
        errln("constructor used with array new did not work right");
    }
    delete [] pa;
#endif

    // try to call the compiler-generated UMemory::operator=(class UMemory const &)
    UMemory m, n;
    m=n;
}

void UObjectTest::TestMFCCompatibility() {
#if U_HAVE_DEBUG_LOCATION_NEW
    /* Make sure that it compiles with MFC's debuggable new usage. */
    UnicodeString *str = new(__FILE__, __LINE__) UnicodeString();
    str->append((char16_t)0x0040); // Is it usable?
    if(str->charAt(0) != 0x0040) {
        errln("debug new doesn't work.");
    }
    UnicodeString::operator delete(str, __FILE__, __LINE__);
#endif
}

void UObjectTest::TestCompilerRTTI() {
#if !UCONFIG_NO_FORMATTING
    UErrorCode errorCode = U_ZERO_ERROR;
    NumberFormat *nf = NumberFormat::createInstance("de", errorCode);
    if (U_FAILURE(errorCode)) {
        dataerrln("NumberFormat::createInstance(de) failed - %s", u_errorName(errorCode));
        return;
    }
    if (dynamic_cast<DecimalFormat *>(nf) == nullptr || dynamic_cast<ChoiceFormat *>(nf) != nullptr) {
        errln("dynamic_cast<>(NumberFormat) failed");
    }
    UnicodeSet emptySet;
    if (&typeid(*nf) == nullptr || typeid(*nf) == typeid(UObject) || typeid(*nf) == typeid(Format) ||
        typeid(*nf) != typeid(DecimalFormat) || typeid(*nf) == typeid(ChoiceFormat) ||
        typeid(*nf) == typeid(emptySet)
    ) {
        errln("typeid(NumberFormat) failed");
    }
    delete nf;
#endif
}

/* --------------- */

void UObjectTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* /* par */ )
{
    switch (index) {

    TESTCASE(0, testIDs);
    TESTCASE(1, testUMemory);
    TESTCASE(2, TestMFCCompatibility);
    TESTCASE(3, TestCompilerRTTI);

    default: name = ""; break; //needed to end loop
    }
}