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      1 /********************************************************************
      2  * COPYRIGHT:
      3  * Copyright (c) 1997-2013, International Business Machines Corporation and
      4  * others. All Rights Reserved.
      5  ********************************************************************/
      6 
      7 #include "unicode/ustring.h"
      8 #include "unicode/uchar.h"
      9 #include "unicode/uniset.h"
     10 #include "unicode/putil.h"
     11 #include "unicode/uscript.h"
     12 #include "cstring.h"
     13 #include "hash.h"
     14 #include "patternprops.h"
     15 #include "normalizer2impl.h"
     16 #include "uparse.h"
     17 #include "ucdtest.h"
     18 
     19 #define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof(array[0]))
     20 
     21 static const char *ignorePropNames[]={
     22     "FC_NFKC",
     23     "NFD_QC",
     24     "NFC_QC",
     25     "NFKD_QC",
     26     "NFKC_QC",
     27     "Expands_On_NFD",
     28     "Expands_On_NFC",
     29     "Expands_On_NFKD",
     30     "Expands_On_NFKC",
     31     "NFKC_CF"
     32 };
     33 
     34 UnicodeTest::UnicodeTest()
     35 {
     36     UErrorCode errorCode=U_ZERO_ERROR;
     37     unknownPropertyNames=new U_NAMESPACE_QUALIFIER Hashtable(errorCode);
     38     if(U_FAILURE(errorCode)) {
     39         delete unknownPropertyNames;
     40         unknownPropertyNames=NULL;
     41     }
     42     // Ignore some property names altogether.
     43     for(int32_t i=0; i<LENGTHOF(ignorePropNames); ++i) {
     44         unknownPropertyNames->puti(UnicodeString(ignorePropNames[i], -1, US_INV), 1, errorCode);
     45     }
     46 }
     47 
     48 UnicodeTest::~UnicodeTest()
     49 {
     50     delete unknownPropertyNames;
     51 }
     52 
     53 void UnicodeTest::runIndexedTest( int32_t index, UBool exec, const char* &name, char* /*par*/ )
     54 {
     55     if(exec) {
     56         logln("TestSuite UnicodeTest: ");
     57     }
     58     TESTCASE_AUTO_BEGIN;
     59     TESTCASE_AUTO(TestAdditionalProperties);
     60     TESTCASE_AUTO(TestBinaryValues);
     61     TESTCASE_AUTO(TestConsistency);
     62     TESTCASE_AUTO(TestPatternProperties);
     63     TESTCASE_AUTO(TestScriptMetadata);
     64     TESTCASE_AUTO(TestBidiPairedBracketType);
     65     TESTCASE_AUTO_END;
     66 }
     67 
     68 //====================================================
     69 // private data used by the tests
     70 //====================================================
     71 
     72 // test DerivedCoreProperties.txt -------------------------------------------
     73 
     74 // copied from genprops.c
     75 static int32_t
     76 getTokenIndex(const char *const tokens[], int32_t countTokens, const char *s) {
     77     const char *t, *z;
     78     int32_t i, j;
     79 
     80     s=u_skipWhitespace(s);
     81     for(i=0; i<countTokens; ++i) {
     82         t=tokens[i];
     83         if(t!=NULL) {
     84             for(j=0;; ++j) {
     85                 if(t[j]!=0) {
     86                     if(s[j]!=t[j]) {
     87                         break;
     88                     }
     89                 } else {
     90                     z=u_skipWhitespace(s+j);
     91                     if(*z==';' || *z==0) {
     92                         return i;
     93                     } else {
     94                         break;
     95                     }
     96                 }
     97             }
     98         }
     99     }
    100     return -1;
    101 }
    102 
    103 static const char *const
    104 derivedPropsNames[]={
    105     "Math",
    106     "Alphabetic",
    107     "Lowercase",
    108     "Uppercase",
    109     "ID_Start",
    110     "ID_Continue",
    111     "XID_Start",
    112     "XID_Continue",
    113     "Default_Ignorable_Code_Point",
    114     "Full_Composition_Exclusion",
    115     "Grapheme_Extend",
    116     "Grapheme_Link", /* Unicode 5 moves this property here from PropList.txt */
    117     "Grapheme_Base",
    118     "Cased",
    119     "Case_Ignorable",
    120     "Changes_When_Lowercased",
    121     "Changes_When_Uppercased",
    122     "Changes_When_Titlecased",
    123     "Changes_When_Casefolded",
    124     "Changes_When_Casemapped",
    125     "Changes_When_NFKC_Casefolded"
    126 };
    127 
    128 static const UProperty
    129 derivedPropsIndex[]={
    130     UCHAR_MATH,
    131     UCHAR_ALPHABETIC,
    132     UCHAR_LOWERCASE,
    133     UCHAR_UPPERCASE,
    134     UCHAR_ID_START,
    135     UCHAR_ID_CONTINUE,
    136     UCHAR_XID_START,
    137     UCHAR_XID_CONTINUE,
    138     UCHAR_DEFAULT_IGNORABLE_CODE_POINT,
    139     UCHAR_FULL_COMPOSITION_EXCLUSION,
    140     UCHAR_GRAPHEME_EXTEND,
    141     UCHAR_GRAPHEME_LINK,
    142     UCHAR_GRAPHEME_BASE,
    143     UCHAR_CASED,
    144     UCHAR_CASE_IGNORABLE,
    145     UCHAR_CHANGES_WHEN_LOWERCASED,
    146     UCHAR_CHANGES_WHEN_UPPERCASED,
    147     UCHAR_CHANGES_WHEN_TITLECASED,
    148     UCHAR_CHANGES_WHEN_CASEFOLDED,
    149     UCHAR_CHANGES_WHEN_CASEMAPPED,
    150     UCHAR_CHANGES_WHEN_NFKC_CASEFOLDED
    151 };
    152 
    153 static int32_t numErrors[LENGTHOF(derivedPropsIndex)]={ 0 };
    154 
    155 enum { MAX_ERRORS=50 };
    156 
    157 U_CFUNC void U_CALLCONV
    158 derivedPropsLineFn(void *context,
    159                    char *fields[][2], int32_t /* fieldCount */,
    160                    UErrorCode *pErrorCode)
    161 {
    162     UnicodeTest *me=(UnicodeTest *)context;
    163     uint32_t start, end;
    164     int32_t i;
    165 
    166     u_parseCodePointRange(fields[0][0], &start, &end, pErrorCode);
    167     if(U_FAILURE(*pErrorCode)) {
    168         me->errln("UnicodeTest: syntax error in DerivedCoreProperties.txt or DerivedNormalizationProps.txt field 0 at %s\n", fields[0][0]);
    169         return;
    170     }
    171 
    172     /* parse derived binary property name, ignore unknown names */
    173     i=getTokenIndex(derivedPropsNames, LENGTHOF(derivedPropsNames), fields[1][0]);
    174     if(i<0) {
    175         UnicodeString propName(fields[1][0], (int32_t)(fields[1][1]-fields[1][0]));
    176         propName.trim();
    177         if(me->unknownPropertyNames->find(propName)==NULL) {
    178             UErrorCode errorCode=U_ZERO_ERROR;
    179             me->unknownPropertyNames->puti(propName, 1, errorCode);
    180             me->errln("UnicodeTest warning: unknown property name '%s' in DerivedCoreProperties.txt or DerivedNormalizationProps.txt\n", fields[1][0]);
    181         }
    182         return;
    183     }
    184 
    185     me->derivedProps[i].add(start, end);
    186 }
    187 
    188 void UnicodeTest::TestAdditionalProperties() {
    189 #if !UCONFIG_NO_NORMALIZATION
    190     // test DerivedCoreProperties.txt and DerivedNormalizationProps.txt
    191     if(LENGTHOF(derivedProps)<LENGTHOF(derivedPropsNames)) {
    192         errln("error: UnicodeTest::derivedProps[] too short, need at least %d UnicodeSets\n",
    193               LENGTHOF(derivedPropsNames));
    194         return;
    195     }
    196     if(LENGTHOF(derivedPropsIndex)!=LENGTHOF(derivedPropsNames)) {
    197         errln("error in ucdtest.cpp: LENGTHOF(derivedPropsIndex)!=LENGTHOF(derivedPropsNames)\n");
    198         return;
    199     }
    200 
    201     char newPath[256];
    202     char backupPath[256];
    203     char *fields[2][2];
    204     UErrorCode errorCode=U_ZERO_ERROR;
    205 
    206     /* Look inside ICU_DATA first */
    207     strcpy(newPath, pathToDataDirectory());
    208     strcat(newPath, "unidata" U_FILE_SEP_STRING "DerivedCoreProperties.txt");
    209 
    210     // As a fallback, try to guess where the source data was located
    211     // at the time ICU was built, and look there.
    212 #   ifdef U_TOPSRCDIR
    213         strcpy(backupPath, U_TOPSRCDIR  U_FILE_SEP_STRING "data");
    214 #   else
    215         strcpy(backupPath, loadTestData(errorCode));
    216         strcat(backupPath, U_FILE_SEP_STRING ".." U_FILE_SEP_STRING ".." U_FILE_SEP_STRING ".." U_FILE_SEP_STRING ".." U_FILE_SEP_STRING "data");
    217 #   endif
    218     strcat(backupPath, U_FILE_SEP_STRING);
    219     strcat(backupPath, "unidata" U_FILE_SEP_STRING "DerivedCoreProperties.txt");
    220 
    221     char *path=newPath;
    222     u_parseDelimitedFile(newPath, ';', fields, 2, derivedPropsLineFn, this, &errorCode);
    223 
    224     if(errorCode==U_FILE_ACCESS_ERROR) {
    225         errorCode=U_ZERO_ERROR;
    226         path=backupPath;
    227         u_parseDelimitedFile(backupPath, ';', fields, 2, derivedPropsLineFn, this, &errorCode);
    228     }
    229     if(U_FAILURE(errorCode)) {
    230         errln("error parsing DerivedCoreProperties.txt: %s\n", u_errorName(errorCode));
    231         return;
    232     }
    233     char *basename=path+strlen(path)-strlen("DerivedCoreProperties.txt");
    234     strcpy(basename, "DerivedNormalizationProps.txt");
    235     u_parseDelimitedFile(path, ';', fields, 2, derivedPropsLineFn, this, &errorCode);
    236     if(U_FAILURE(errorCode)) {
    237         errln("error parsing DerivedNormalizationProps.txt: %s\n", u_errorName(errorCode));
    238         return;
    239     }
    240 
    241     // now we have all derived core properties in the UnicodeSets
    242     // run them all through the API
    243     int32_t rangeCount, range;
    244     uint32_t i;
    245     UChar32 start, end;
    246 
    247     // test all TRUE properties
    248     for(i=0; i<LENGTHOF(derivedPropsNames); ++i) {
    249         rangeCount=derivedProps[i].getRangeCount();
    250         for(range=0; range<rangeCount && numErrors[i]<MAX_ERRORS; ++range) {
    251             start=derivedProps[i].getRangeStart(range);
    252             end=derivedProps[i].getRangeEnd(range);
    253             for(; start<=end; ++start) {
    254                 if(!u_hasBinaryProperty(start, derivedPropsIndex[i])) {
    255                     dataerrln("UnicodeTest error: u_hasBinaryProperty(U+%04lx, %s)==FALSE is wrong", start, derivedPropsNames[i]);
    256                     if(++numErrors[i]>=MAX_ERRORS) {
    257                       dataerrln("Too many errors, moving to the next test");
    258                       break;
    259                     }
    260                 }
    261             }
    262         }
    263     }
    264 
    265     // invert all properties
    266     for(i=0; i<LENGTHOF(derivedPropsNames); ++i) {
    267         derivedProps[i].complement();
    268     }
    269 
    270     // test all FALSE properties
    271     for(i=0; i<LENGTHOF(derivedPropsNames); ++i) {
    272         rangeCount=derivedProps[i].getRangeCount();
    273         for(range=0; range<rangeCount && numErrors[i]<MAX_ERRORS; ++range) {
    274             start=derivedProps[i].getRangeStart(range);
    275             end=derivedProps[i].getRangeEnd(range);
    276             for(; start<=end; ++start) {
    277                 if(u_hasBinaryProperty(start, derivedPropsIndex[i])) {
    278                     errln("UnicodeTest error: u_hasBinaryProperty(U+%04lx, %s)==TRUE is wrong\n", start, derivedPropsNames[i]);
    279                     if(++numErrors[i]>=MAX_ERRORS) {
    280                       errln("Too many errors, moving to the next test");
    281                       break;
    282                     }
    283                 }
    284             }
    285         }
    286     }
    287 #endif /* !UCONFIG_NO_NORMALIZATION */
    288 }
    289 
    290 void UnicodeTest::TestBinaryValues() {
    291     /*
    292      * Unicode 5.1 explicitly defines binary property value aliases.
    293      * Verify that they are all recognized.
    294      */
    295     UErrorCode errorCode=U_ZERO_ERROR;
    296     UnicodeSet alpha(UNICODE_STRING_SIMPLE("[:Alphabetic:]"), errorCode);
    297     if(U_FAILURE(errorCode)) {
    298         dataerrln("UnicodeSet([:Alphabetic:]) failed - %s", u_errorName(errorCode));
    299         return;
    300     }
    301 
    302     static const char *const falseValues[]={ "N", "No", "F", "False" };
    303     static const char *const trueValues[]={ "Y", "Yes", "T", "True" };
    304     int32_t i;
    305     for(i=0; i<LENGTHOF(falseValues); ++i) {
    306         UnicodeString pattern=UNICODE_STRING_SIMPLE("[:Alphabetic=:]");
    307         pattern.insert(pattern.length()-2, UnicodeString(falseValues[i], -1, US_INV));
    308         errorCode=U_ZERO_ERROR;
    309         UnicodeSet set(pattern, errorCode);
    310         if(U_FAILURE(errorCode)) {
    311             errln("UnicodeSet([:Alphabetic=%s:]) failed - %s\n", falseValues[i], u_errorName(errorCode));
    312             continue;
    313         }
    314         set.complement();
    315         if(set!=alpha) {
    316             errln("UnicodeSet([:Alphabetic=%s:]).complement()!=UnicodeSet([:Alphabetic:])\n", falseValues[i]);
    317         }
    318     }
    319     for(i=0; i<LENGTHOF(trueValues); ++i) {
    320         UnicodeString pattern=UNICODE_STRING_SIMPLE("[:Alphabetic=:]");
    321         pattern.insert(pattern.length()-2, UnicodeString(trueValues[i], -1, US_INV));
    322         errorCode=U_ZERO_ERROR;
    323         UnicodeSet set(pattern, errorCode);
    324         if(U_FAILURE(errorCode)) {
    325             errln("UnicodeSet([:Alphabetic=%s:]) failed - %s\n", trueValues[i], u_errorName(errorCode));
    326             continue;
    327         }
    328         if(set!=alpha) {
    329             errln("UnicodeSet([:Alphabetic=%s:])!=UnicodeSet([:Alphabetic:])\n", trueValues[i]);
    330         }
    331     }
    332 }
    333 
    334 void UnicodeTest::TestConsistency() {
    335 #if !UCONFIG_NO_NORMALIZATION
    336     /*
    337      * Test for an example that getCanonStartSet() delivers
    338      * all characters that compose from the input one,
    339      * even in multiple steps.
    340      * For example, the set for "I" (0049) should contain both
    341      * I-diaeresis (00CF) and I-diaeresis-acute (1E2E).
    342      * In general, the set for the middle such character should be a subset
    343      * of the set for the first.
    344      */
    345     IcuTestErrorCode errorCode(*this, "TestConsistency");
    346     const Normalizer2 *nfd=Normalizer2::getNFDInstance(errorCode);
    347     const Normalizer2Impl *nfcImpl=Normalizer2Factory::getNFCImpl(errorCode);
    348     if(!nfcImpl->ensureCanonIterData(errorCode) || errorCode.isFailure()) {
    349         dataerrln("Normalizer2::getInstance(NFD) or Normalizer2Factory::getNFCImpl() failed - %s\n",
    350                   errorCode.errorName());
    351         errorCode.reset();
    352         return;
    353     }
    354 
    355     UnicodeSet set1, set2;
    356     if (nfcImpl->getCanonStartSet(0x49, set1)) {
    357         /* enumerate all characters that are plausible to be latin letters */
    358         for(UChar start=0xa0; start<0x2000; ++start) {
    359             UnicodeString decomp=nfd->normalize(UnicodeString(start), errorCode);
    360             if(decomp.length()>1 && decomp[0]==0x49) {
    361                 set2.add(start);
    362             }
    363         }
    364 
    365         if (set1!=set2) {
    366             errln("[canon start set of 0049] != [all c with canon decomp with 0049]");
    367         }
    368         // This was available in cucdtst.c but the test had to move to intltest
    369         // because the new internal normalization functions are in C++.
    370         //compareUSets(set1, set2,
    371         //             "[canon start set of 0049]", "[all c with canon decomp with 0049]",
    372         //             TRUE);
    373     } else {
    374         errln("NFC.getCanonStartSet() returned FALSE");
    375     }
    376 #endif
    377 }
    378 
    379 /**
    380  * Test various implementations of Pattern_Syntax & Pattern_White_Space.
    381  */
    382 void UnicodeTest::TestPatternProperties() {
    383     IcuTestErrorCode errorCode(*this, "TestPatternProperties()");
    384     UnicodeSet syn_pp;
    385     UnicodeSet syn_prop(UNICODE_STRING_SIMPLE("[:Pattern_Syntax:]"), errorCode);
    386     UnicodeSet syn_list(
    387         "[!-/\\:-@\\[-\\^`\\{-~"
    388         "\\u00A1-\\u00A7\\u00A9\\u00AB\\u00AC\\u00AE\\u00B0\\u00B1\\u00B6\\u00BB\\u00BF\\u00D7\\u00F7"
    389         "\\u2010-\\u2027\\u2030-\\u203E\\u2041-\\u2053\\u2055-\\u205E\\u2190-\\u245F\\u2500-\\u2775"
    390         "\\u2794-\\u2BFF\\u2E00-\\u2E7F\\u3001-\\u3003\\u3008-\\u3020\\u3030\\uFD3E\\uFD3F\\uFE45\\uFE46]", errorCode);
    391     UnicodeSet ws_pp;
    392     UnicodeSet ws_prop(UNICODE_STRING_SIMPLE("[:Pattern_White_Space:]"), errorCode);
    393     UnicodeSet ws_list(UNICODE_STRING_SIMPLE("[\\u0009-\\u000D\\ \\u0085\\u200E\\u200F\\u2028\\u2029]"), errorCode);
    394     UnicodeSet syn_ws_pp;
    395     UnicodeSet syn_ws_prop(syn_prop);
    396     syn_ws_prop.addAll(ws_prop);
    397     for(UChar32 c=0; c<=0xffff; ++c) {
    398         if(PatternProps::isSyntax(c)) {
    399             syn_pp.add(c);
    400         }
    401         if(PatternProps::isWhiteSpace(c)) {
    402             ws_pp.add(c);
    403         }
    404         if(PatternProps::isSyntaxOrWhiteSpace(c)) {
    405             syn_ws_pp.add(c);
    406         }
    407     }
    408     compareUSets(syn_pp, syn_prop,
    409                  "PatternProps.isSyntax()", "[:Pattern_Syntax:]", TRUE);
    410     compareUSets(syn_pp, syn_list,
    411                  "PatternProps.isSyntax()", "[Pattern_Syntax ranges]", TRUE);
    412     compareUSets(ws_pp, ws_prop,
    413                  "PatternProps.isWhiteSpace()", "[:Pattern_White_Space:]", TRUE);
    414     compareUSets(ws_pp, ws_list,
    415                  "PatternProps.isWhiteSpace()", "[Pattern_White_Space ranges]", TRUE);
    416     compareUSets(syn_ws_pp, syn_ws_prop,
    417                  "PatternProps.isSyntaxOrWhiteSpace()",
    418                  "[[:Pattern_Syntax:][:Pattern_White_Space:]]", TRUE);
    419 }
    420 
    421 // So far only minimal port of Java & cucdtst.c compareUSets().
    422 UBool
    423 UnicodeTest::compareUSets(const UnicodeSet &a, const UnicodeSet &b,
    424                           const char *a_name, const char *b_name,
    425                           UBool diffIsError) {
    426     UBool same= a==b;
    427     if(!same && diffIsError) {
    428         errln("Sets are different: %s vs. %s\n", a_name, b_name);
    429     }
    430     return same;
    431 }
    432 
    433 namespace {
    434 
    435 /**
    436  * Maps a special script code to the most common script of its encoded characters.
    437  */
    438 UScriptCode getCharScript(UScriptCode script) {
    439     switch(script) {
    440     case USCRIPT_SIMPLIFIED_HAN:
    441     case USCRIPT_TRADITIONAL_HAN:
    442         return USCRIPT_HAN;
    443     case USCRIPT_JAPANESE:
    444         return USCRIPT_HIRAGANA;
    445     case USCRIPT_KOREAN:
    446         return USCRIPT_HANGUL;
    447     default:
    448         return script;
    449     }
    450 }
    451 
    452 }  // namespace
    453 
    454 void UnicodeTest::TestScriptMetadata() {
    455     IcuTestErrorCode errorCode(*this, "TestScriptMetadata()");
    456     UnicodeSet rtl("[[:bc=R:][:bc=AL:]-[:Cn:]-[:sc=Common:]]", errorCode);
    457     // So far, sample characters are uppercase.
    458     // Georgian is special.
    459     UnicodeSet cased("[[:Lu:]-[:sc=Common:]-[:sc=Geor:]]", errorCode);
    460     for(int32_t sci = 0; sci < USCRIPT_CODE_LIMIT; ++sci) {
    461         UScriptCode sc = (UScriptCode)sci;
    462         // Run the test with -v to see which script has failures:
    463         // .../intltest$ make && ./intltest utility/UnicodeTest/TestScriptMetadata -v | grep -C 3 FAIL
    464         logln(uscript_getShortName(sc));
    465         UScriptUsage usage = uscript_getUsage(sc);
    466         UnicodeString sample = uscript_getSampleUnicodeString(sc);
    467         UnicodeSet scriptSet;
    468         scriptSet.applyIntPropertyValue(UCHAR_SCRIPT, sc, errorCode);
    469         if(usage == USCRIPT_USAGE_NOT_ENCODED) {
    470             assertTrue("not encoded, no sample", sample.isEmpty());
    471             assertFalse("not encoded, not RTL", uscript_isRightToLeft(sc));
    472             assertFalse("not encoded, not LB letters", uscript_breaksBetweenLetters(sc));
    473             assertFalse("not encoded, not cased", uscript_isCased(sc));
    474             assertTrue("not encoded, no characters", scriptSet.isEmpty());
    475         } else {
    476             assertFalse("encoded, has a sample character", sample.isEmpty());
    477             UChar32 firstChar = sample.char32At(0);
    478             UScriptCode charScript = getCharScript(sc);
    479             assertEquals("script(sample(script))",
    480                          (int32_t)charScript, (int32_t)uscript_getScript(firstChar, errorCode));
    481             assertEquals("RTL vs. set", (UBool)rtl.contains(firstChar), (UBool)uscript_isRightToLeft(sc));
    482             assertEquals("cased vs. set", (UBool)cased.contains(firstChar), (UBool)uscript_isCased(sc));
    483             assertEquals("encoded, has characters", (UBool)(sc == charScript), (UBool)(!scriptSet.isEmpty()));
    484             if(uscript_isRightToLeft(sc)) {
    485                 rtl.removeAll(scriptSet);
    486             }
    487             if(uscript_isCased(sc)) {
    488                 cased.removeAll(scriptSet);
    489             }
    490         }
    491     }
    492     UnicodeString pattern;
    493     assertEquals("no remaining RTL characters",
    494                  UnicodeString("[]"), rtl.toPattern(pattern));
    495     assertEquals("no remaining cased characters",
    496                  UnicodeString("[]"), cased.toPattern(pattern));
    497 
    498     assertTrue("Hani breaks between letters", uscript_breaksBetweenLetters(USCRIPT_HAN));
    499     assertTrue("Thai breaks between letters", uscript_breaksBetweenLetters(USCRIPT_THAI));
    500     assertFalse("Latn does not break between letters", uscript_breaksBetweenLetters(USCRIPT_LATIN));
    501 }
    502 
    503 void UnicodeTest::TestBidiPairedBracketType() {
    504     // BidiBrackets-6.3.0.txt says:
    505     //
    506     // The set of code points listed in this file was originally derived
    507     // using the character properties General_Category (gc), Bidi_Class (bc),
    508     // Bidi_Mirrored (Bidi_M), and Bidi_Mirroring_Glyph (bmg), as follows:
    509     // two characters, A and B, form a pair if A has gc=Ps and B has gc=Pe,
    510     // both have bc=ON and Bidi_M=Y, and bmg of A is B. Bidi_Paired_Bracket
    511     // maps A to B and vice versa, and their Bidi_Paired_Bracket_Type
    512     // property values are Open and Close, respectively.
    513     IcuTestErrorCode errorCode(*this, "TestBidiPairedBracketType()");
    514     UnicodeSet bpt("[:^bpt=n:]", errorCode);
    515     assertTrue("bpt!=None is not empty", !bpt.isEmpty());
    516     // The following should always be true.
    517     UnicodeSet mirrored("[:Bidi_M:]", errorCode);
    518     UnicodeSet other_neutral("[:bc=ON:]", errorCode);
    519     assertTrue("bpt!=None is a subset of Bidi_M", mirrored.containsAll(bpt));
    520     assertTrue("bpt!=None is a subset of bc=ON", other_neutral.containsAll(bpt));
    521     // The following are true at least initially in Unicode 6.3.
    522     UnicodeSet bpt_open("[:bpt=o:]", errorCode);
    523     UnicodeSet bpt_close("[:bpt=c:]", errorCode);
    524     UnicodeSet ps("[:Ps:]", errorCode);
    525     UnicodeSet pe("[:Pe:]", errorCode);
    526     assertTrue("bpt=Open is a subset of Ps", ps.containsAll(bpt_open));
    527     assertTrue("bpt=Close is a subset of Pe", pe.containsAll(bpt_close));
    528 }
    529