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      1 /********************************************************************
      2  * COPYRIGHT:
      3  * Copyright (c) 1997-2015, International Business Machines Corporation and
      4  * others. All Rights Reserved.
      5  ********************************************************************/
      6 /*   file name:  strtest.cpp
      7 *   encoding:   US-ASCII
      8 *   tab size:   8 (not used)
      9 *   indentation:4
     10 *
     11 *   created on: 1999nov22
     12 *   created by: Markus W. Scherer
     13 */
     14 
     15 #include <string.h>
     16 
     17 #include "unicode/utypes.h"
     18 #include "unicode/putil.h"
     19 #include "unicode/std_string.h"
     20 #include "unicode/stringpiece.h"
     21 #include "unicode/unistr.h"
     22 #include "unicode/ustring.h"
     23 #include "charstr.h"
     24 #include "cstr.h"
     25 #include "intltest.h"
     26 #include "strtest.h"
     27 
     28 StringTest::~StringTest() {}
     29 
     30 void StringTest::TestEndian(void) {
     31     union {
     32         uint8_t byte;
     33         uint16_t word;
     34     } u;
     35     u.word=0x0100;
     36     if(U_IS_BIG_ENDIAN!=u.byte) {
     37         errln("TestEndian: U_IS_BIG_ENDIAN needs to be fixed in platform.h");
     38     }
     39 }
     40 
     41 void StringTest::TestSizeofTypes(void) {
     42     if(U_SIZEOF_WCHAR_T!=sizeof(wchar_t)) {
     43         errln("TestSizeofWCharT: U_SIZEOF_WCHAR_T!=sizeof(wchar_t) - U_SIZEOF_WCHAR_T needs to be fixed in platform.h");
     44     }
     45 #ifdef U_INT64_T_UNAVAILABLE
     46     errln("int64_t and uint64_t are undefined.");
     47 #else
     48     if(8!=sizeof(int64_t)) {
     49         errln("TestSizeofTypes: 8!=sizeof(int64_t) - int64_t needs to be fixed in platform.h");
     50     }
     51     if(8!=sizeof(uint64_t)) {
     52         errln("TestSizeofTypes: 8!=sizeof(uint64_t) - uint64_t needs to be fixed in platform.h");
     53     }
     54 #endif
     55     if(8!=sizeof(double)) {
     56         errln("8!=sizeof(double) - putil.c code may not work");
     57     }
     58     if(4!=sizeof(int32_t)) {
     59         errln("4!=sizeof(int32_t)");
     60     }
     61     if(4!=sizeof(uint32_t)) {
     62         errln("4!=sizeof(uint32_t)");
     63     }
     64     if(2!=sizeof(int16_t)) {
     65         errln("2!=sizeof(int16_t)");
     66     }
     67     if(2!=sizeof(uint16_t)) {
     68         errln("2!=sizeof(uint16_t)");
     69     }
     70     if(2!=sizeof(UChar)) {
     71         errln("2!=sizeof(UChar)");
     72     }
     73     if(1!=sizeof(int8_t)) {
     74         errln("1!=sizeof(int8_t)");
     75     }
     76     if(1!=sizeof(uint8_t)) {
     77         errln("1!=sizeof(uint8_t)");
     78     }
     79     if(1!=sizeof(UBool)) {
     80         errln("1!=sizeof(UBool)");
     81     }
     82 }
     83 
     84 void StringTest::TestCharsetFamily(void) {
     85     unsigned char c='A';
     86     if( (U_CHARSET_FAMILY==U_ASCII_FAMILY && c!=0x41) ||
     87         (U_CHARSET_FAMILY==U_EBCDIC_FAMILY && c!=0xc1)
     88     ) {
     89         errln("TestCharsetFamily: U_CHARSET_FAMILY needs to be fixed in platform.h");
     90     }
     91 }
     92 
     93 U_STRING_DECL(ustringVar, "aZ0 -", 5);
     94 
     95 void
     96 StringTest::Test_U_STRING() {
     97     U_STRING_INIT(ustringVar, "aZ0 -", 5);
     98     if( u_strlen(ustringVar)!=5 ||
     99         ustringVar[0]!=0x61 ||
    100         ustringVar[1]!=0x5a ||
    101         ustringVar[2]!=0x30 ||
    102         ustringVar[3]!=0x20 ||
    103         ustringVar[4]!=0x2d ||
    104         ustringVar[5]!=0
    105     ) {
    106         errln("Test_U_STRING: U_STRING_DECL with U_STRING_INIT does not work right! "
    107               "See putil.h and utypes.h with platform.h.");
    108     }
    109 }
    110 
    111 void
    112 StringTest::Test_UNICODE_STRING() {
    113     UnicodeString ustringVar=UNICODE_STRING("aZ0 -", 5);
    114     if( ustringVar.length()!=5 ||
    115         ustringVar[0]!=0x61 ||
    116         ustringVar[1]!=0x5a ||
    117         ustringVar[2]!=0x30 ||
    118         ustringVar[3]!=0x20 ||
    119         ustringVar[4]!=0x2d
    120     ) {
    121         errln("Test_UNICODE_STRING: UNICODE_STRING does not work right! "
    122               "See unistr.h and utypes.h with platform.h.");
    123     }
    124 }
    125 
    126 void
    127 StringTest::Test_UNICODE_STRING_SIMPLE() {
    128     UnicodeString ustringVar=UNICODE_STRING_SIMPLE("aZ0 -");
    129     if( ustringVar.length()!=5 ||
    130         ustringVar[0]!=0x61 ||
    131         ustringVar[1]!=0x5a ||
    132         ustringVar[2]!=0x30 ||
    133         ustringVar[3]!=0x20 ||
    134         ustringVar[4]!=0x2d
    135     ) {
    136         errln("Test_UNICODE_STRING_SIMPLE: UNICODE_STRING_SIMPLE does not work right! "
    137               "See unistr.h and utypes.h with platform.h.");
    138     }
    139 }
    140 
    141 void
    142 StringTest::Test_UTF8_COUNT_TRAIL_BYTES() {
    143     if(UTF8_COUNT_TRAIL_BYTES(0x7F) != 0
    144         || UTF8_COUNT_TRAIL_BYTES(0xC0) != 1
    145         || UTF8_COUNT_TRAIL_BYTES(0xE0) != 2
    146         || UTF8_COUNT_TRAIL_BYTES(0xF0) != 3)
    147     {
    148         errln("Test_UTF8_COUNT_TRAIL_BYTES: UTF8_COUNT_TRAIL_BYTES does not work right! "
    149               "See utf8.h.");
    150     }
    151 }
    152 
    153 void StringTest::runIndexedTest(int32_t index, UBool exec, const char *&name, char * /*par*/) {
    154     if(exec) {
    155         logln("TestSuite Character and String Test: ");
    156     }
    157     TESTCASE_AUTO_BEGIN;
    158     TESTCASE_AUTO(TestEndian);
    159     TESTCASE_AUTO(TestSizeofTypes);
    160     TESTCASE_AUTO(TestCharsetFamily);
    161     TESTCASE_AUTO(Test_U_STRING);
    162     TESTCASE_AUTO(Test_UNICODE_STRING);
    163     TESTCASE_AUTO(Test_UNICODE_STRING_SIMPLE);
    164     TESTCASE_AUTO(Test_UTF8_COUNT_TRAIL_BYTES);
    165     TESTCASE_AUTO(TestSTLCompatibility);
    166     TESTCASE_AUTO(TestStringPiece);
    167     TESTCASE_AUTO(TestStringPieceComparisons);
    168     TESTCASE_AUTO(TestByteSink);
    169     TESTCASE_AUTO(TestCheckedArrayByteSink);
    170     TESTCASE_AUTO(TestStringByteSink);
    171     TESTCASE_AUTO(TestCharString);
    172     TESTCASE_AUTO(TestCStr);
    173     TESTCASE_AUTO_END;
    174 }
    175 
    176 void
    177 StringTest::TestStringPiece() {
    178     // Default constructor.
    179     StringPiece empty;
    180     if(!empty.empty() || empty.data()!=NULL || empty.length()!=0 || empty.size()!=0) {
    181         errln("StringPiece() failed");
    182     }
    183     // Construct from NULL const char * pointer.
    184     StringPiece null(NULL);
    185     if(!null.empty() || null.data()!=NULL || null.length()!=0 || null.size()!=0) {
    186         errln("StringPiece(NULL) failed");
    187     }
    188     // Construct from const char * pointer.
    189     static const char *abc_chars="abc";
    190     StringPiece abc(abc_chars);
    191     if(abc.empty() || abc.data()!=abc_chars || abc.length()!=3 || abc.size()!=3) {
    192         errln("StringPiece(abc_chars) failed");
    193     }
    194     // Construct from const char * pointer and length.
    195     static const char *abcdefg_chars="abcdefg";
    196     StringPiece abcd(abcdefg_chars, 4);
    197     if(abcd.empty() || abcd.data()!=abcdefg_chars || abcd.length()!=4 || abcd.size()!=4) {
    198         errln("StringPiece(abcdefg_chars, 4) failed");
    199     }
    200 #if U_HAVE_STD_STRING
    201     // Construct from std::string.
    202     std::string uvwxyz_string("uvwxyz");
    203     StringPiece uvwxyz(uvwxyz_string);
    204     if(uvwxyz.empty() || uvwxyz.data()!=uvwxyz_string.data() || uvwxyz.length()!=6 || uvwxyz.size()!=6) {
    205         errln("StringPiece(uvwxyz_string) failed");
    206     }
    207 #endif
    208     // Substring constructor with pos.
    209     StringPiece sp(abcd, -1);
    210     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=4 || sp.size()!=4) {
    211         errln("StringPiece(abcd, -1) failed");
    212     }
    213     sp=StringPiece(abcd, 5);
    214     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    215         errln("StringPiece(abcd, 5) failed");
    216     }
    217     sp=StringPiece(abcd, 2);
    218     if(sp.empty() || sp.data()!=abcdefg_chars+2 || sp.length()!=2 || sp.size()!=2) {
    219         errln("StringPiece(abcd, -1) failed");
    220     }
    221     // Substring constructor with pos and len.
    222     sp=StringPiece(abcd, -1, 8);
    223     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=4 || sp.size()!=4) {
    224         errln("StringPiece(abcd, -1, 8) failed");
    225     }
    226     sp=StringPiece(abcd, 5, 8);
    227     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    228         errln("StringPiece(abcd, 5, 8) failed");
    229     }
    230     sp=StringPiece(abcd, 2, 8);
    231     if(sp.empty() || sp.data()!=abcdefg_chars+2 || sp.length()!=2 || sp.size()!=2) {
    232         errln("StringPiece(abcd, -1) failed");
    233     }
    234     sp=StringPiece(abcd, 2, -1);
    235     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    236         errln("StringPiece(abcd, 5, -1) failed");
    237     }
    238     // static const npos
    239     const int32_t *ptr_npos=&StringPiece::npos;
    240     if(StringPiece::npos!=0x7fffffff || *ptr_npos!=0x7fffffff) {
    241         errln("StringPiece::npos!=0x7fffffff");
    242     }
    243     // substr() method with pos, using len=npos.
    244     sp=abcd.substr(-1);
    245     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=4 || sp.size()!=4) {
    246         errln("abcd.substr(-1) failed");
    247     }
    248     sp=abcd.substr(5);
    249     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    250         errln("abcd.substr(5) failed");
    251     }
    252     sp=abcd.substr(2);
    253     if(sp.empty() || sp.data()!=abcdefg_chars+2 || sp.length()!=2 || sp.size()!=2) {
    254         errln("abcd.substr(-1) failed");
    255     }
    256     // substr() method with pos and len.
    257     sp=abcd.substr(-1, 8);
    258     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=4 || sp.size()!=4) {
    259         errln("abcd.substr(-1, 8) failed");
    260     }
    261     sp=abcd.substr(5, 8);
    262     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    263         errln("abcd.substr(5, 8) failed");
    264     }
    265     sp=abcd.substr(2, 8);
    266     if(sp.empty() || sp.data()!=abcdefg_chars+2 || sp.length()!=2 || sp.size()!=2) {
    267         errln("abcd.substr(-1) failed");
    268     }
    269     sp=abcd.substr(2, -1);
    270     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    271         errln("abcd.substr(5, -1) failed");
    272     }
    273     // clear()
    274     sp=abcd;
    275     sp.clear();
    276     if(!sp.empty() || sp.data()!=NULL || sp.length()!=0 || sp.size()!=0) {
    277         errln("abcd.clear() failed");
    278     }
    279     // remove_prefix()
    280     sp=abcd;
    281     sp.remove_prefix(-1);
    282     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=4 || sp.size()!=4) {
    283         errln("abcd.remove_prefix(-1) failed");
    284     }
    285     sp=abcd;
    286     sp.remove_prefix(2);
    287     if(sp.empty() || sp.data()!=abcdefg_chars+2 || sp.length()!=2 || sp.size()!=2) {
    288         errln("abcd.remove_prefix(2) failed");
    289     }
    290     sp=abcd;
    291     sp.remove_prefix(5);
    292     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    293         errln("abcd.remove_prefix(5) failed");
    294     }
    295     // remove_suffix()
    296     sp=abcd;
    297     sp.remove_suffix(-1);
    298     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=4 || sp.size()!=4) {
    299         errln("abcd.remove_suffix(-1) failed");
    300     }
    301     sp=abcd;
    302     sp.remove_suffix(2);
    303     if(sp.empty() || sp.data()!=abcdefg_chars || sp.length()!=2 || sp.size()!=2) {
    304         errln("abcd.remove_suffix(2) failed");
    305     }
    306     sp=abcd;
    307     sp.remove_suffix(5);
    308     if(!sp.empty() || sp.length()!=0 || sp.size()!=0) {
    309         errln("abcd.remove_suffix(5) failed");
    310     }
    311 }
    312 
    313 void
    314 StringTest::TestStringPieceComparisons() {
    315     StringPiece empty;
    316     StringPiece null(NULL);
    317     StringPiece abc("abc");
    318     StringPiece abcd("abcdefg", 4);
    319     StringPiece abx("abx");
    320     if(empty!=null) {
    321         errln("empty!=null");
    322     }
    323     if(empty==abc) {
    324         errln("empty==abc");
    325     }
    326     if(abc==abcd) {
    327         errln("abc==abcd");
    328     }
    329     abcd.remove_suffix(1);
    330     if(abc!=abcd) {
    331         errln("abc!=abcd.remove_suffix(1)");
    332     }
    333     if(abc==abx) {
    334         errln("abc==abx");
    335     }
    336 }
    337 
    338 // Verify that ByteSink is subclassable and Flush() overridable.
    339 class SimpleByteSink : public ByteSink {
    340 public:
    341     SimpleByteSink(char *outbuf) : fOutbuf(outbuf), fLength(0) {}
    342     virtual void Append(const char *bytes, int32_t n) {
    343         if(fOutbuf != bytes) {
    344             memcpy(fOutbuf, bytes, n);
    345         }
    346         fOutbuf += n;
    347         fLength += n;
    348     }
    349     virtual void Flush() { Append("z", 1); }
    350     int32_t length() { return fLength; }
    351 private:
    352     char *fOutbuf;
    353     int32_t fLength;
    354 };
    355 
    356 // Test the ByteSink base class.
    357 void
    358 StringTest::TestByteSink() {
    359     char buffer[20];
    360     buffer[4] = '!';
    361     SimpleByteSink sink(buffer);
    362     sink.Append("abc", 3);
    363     sink.Flush();
    364     if(!(sink.length() == 4 && 0 == memcmp("abcz", buffer, 4) && buffer[4] == '!')) {
    365         errln("ByteSink (SimpleByteSink) did not Append() or Flush() as expected");
    366         return;
    367     }
    368     char scratch[20];
    369     int32_t capacity = -1;
    370     char *dest = sink.GetAppendBuffer(0, 50, scratch, (int32_t)sizeof(scratch), &capacity);
    371     if(dest != NULL || capacity != 0) {
    372         errln("ByteSink.GetAppendBuffer(min_capacity<1) did not properly return NULL[0]");
    373         return;
    374     }
    375     dest = sink.GetAppendBuffer(10, 50, scratch, 9, &capacity);
    376     if(dest != NULL || capacity != 0) {
    377         errln("ByteSink.GetAppendBuffer(scratch_capacity<min_capacity) did not properly return NULL[0]");
    378         return;
    379     }
    380     dest = sink.GetAppendBuffer(5, 50, scratch, (int32_t)sizeof(scratch), &capacity);
    381     if(dest != scratch || capacity != (int32_t)sizeof(scratch)) {
    382         errln("ByteSink.GetAppendBuffer() did not properly return the scratch buffer");
    383     }
    384 }
    385 
    386 void
    387 StringTest::TestCheckedArrayByteSink() {
    388     char buffer[20];  // < 26 for the test code to work
    389     buffer[3] = '!';
    390     CheckedArrayByteSink sink(buffer, (int32_t)sizeof(buffer));
    391     sink.Append("abc", 3);
    392     if(!(sink.NumberOfBytesAppended() == 3 && sink.NumberOfBytesWritten() == 3 &&
    393          0 == memcmp("abc", buffer, 3) && buffer[3] == '!') &&
    394          !sink.Overflowed()
    395     ) {
    396         errln("CheckedArrayByteSink did not Append() as expected");
    397         return;
    398     }
    399     char scratch[10];
    400     int32_t capacity = -1;
    401     char *dest = sink.GetAppendBuffer(0, 50, scratch, (int32_t)sizeof(scratch), &capacity);
    402     if(dest != NULL || capacity != 0) {
    403         errln("CheckedArrayByteSink.GetAppendBuffer(min_capacity<1) did not properly return NULL[0]");
    404         return;
    405     }
    406     dest = sink.GetAppendBuffer(10, 50, scratch, 9, &capacity);
    407     if(dest != NULL || capacity != 0) {
    408         errln("CheckedArrayByteSink.GetAppendBuffer(scratch_capacity<min_capacity) did not properly return NULL[0]");
    409         return;
    410     }
    411     dest = sink.GetAppendBuffer(10, 50, scratch, (int32_t)sizeof(scratch), &capacity);
    412     if(dest != buffer + 3 || capacity != (int32_t)sizeof(buffer) - 3) {
    413         errln("CheckedArrayByteSink.GetAppendBuffer() did not properly return its own buffer");
    414         return;
    415     }
    416     memcpy(dest, "defghijklm", 10);
    417     sink.Append(dest, 10);
    418     if(!(sink.NumberOfBytesAppended() == 13 && sink.NumberOfBytesWritten() == 13 &&
    419          0 == memcmp("abcdefghijklm", buffer, 13) &&
    420          !sink.Overflowed())
    421     ) {
    422         errln("CheckedArrayByteSink did not Append(its own buffer) as expected");
    423         return;
    424     }
    425     dest = sink.GetAppendBuffer(10, 50, scratch, (int32_t)sizeof(scratch), &capacity);
    426     if(dest != scratch || capacity != (int32_t)sizeof(scratch)) {
    427         errln("CheckedArrayByteSink.GetAppendBuffer() did not properly return the scratch buffer");
    428     }
    429     memcpy(dest, "nopqrstuvw", 10);
    430     sink.Append(dest, 10);
    431     if(!(sink.NumberOfBytesAppended() == 23 &&
    432          sink.NumberOfBytesWritten() == (int32_t)sizeof(buffer) &&
    433          0 == memcmp("abcdefghijklmnopqrstuvwxyz", buffer, (int32_t)sizeof(buffer)) &&
    434          sink.Overflowed())
    435     ) {
    436         errln("CheckedArrayByteSink did not Append(scratch buffer) as expected");
    437         return;
    438     }
    439     sink.Reset().Append("123", 3);
    440     if(!(sink.NumberOfBytesAppended() == 3 && sink.NumberOfBytesWritten() == 3 &&
    441          0 == memcmp("123defghijklmnopqrstuvwxyz", buffer, (int32_t)sizeof(buffer)) &&
    442          !sink.Overflowed())
    443     ) {
    444         errln("CheckedArrayByteSink did not Reset().Append() as expected");
    445         return;
    446     }
    447 }
    448 
    449 void
    450 StringTest::TestStringByteSink() {
    451 #if U_HAVE_STD_STRING
    452     // Not much to test because only the constructor and Append()
    453     // are implemented, and trivially so.
    454     std::string result("abc");  // std::string
    455     StringByteSink<std::string> sink(&result);
    456     sink.Append("def", 3);
    457     if(result != "abcdef") {
    458         errln("StringByteSink did not Append() as expected");
    459     }
    460 #endif
    461 }
    462 
    463 #if defined(_MSC_VER)
    464 #include <vector>
    465 #endif
    466 
    467 void
    468 StringTest::TestSTLCompatibility() {
    469 #if defined(_MSC_VER)
    470     /* Just make sure that it compiles with STL's placement new usage. */
    471     std::vector<UnicodeString> myvect;
    472     myvect.push_back(UnicodeString("blah"));
    473 #endif
    474 }
    475 
    476 void
    477 StringTest::TestCharString() {
    478     IcuTestErrorCode errorCode(*this, "TestCharString()");
    479     char expected[400];
    480     static const char longStr[] =
    481         "This is a long string that is meant to cause reallocation of the internal buffer of CharString.";
    482     CharString chStr(longStr, errorCode);
    483     if (0 != strcmp(longStr, chStr.data()) || (int32_t)strlen(longStr) != chStr.length()) {
    484         errln("CharString(longStr) failed.");
    485     }
    486     CharString test("Test", errorCode);
    487     CharString copy(test,errorCode);
    488     copy.copyFrom(chStr, errorCode);
    489     if (0 != strcmp(longStr, copy.data()) || (int32_t)strlen(longStr) != copy.length()) {
    490         errln("CharString.copyFrom() failed.");
    491     }
    492     StringPiece sp(chStr.toStringPiece());
    493     sp.remove_prefix(4);
    494     chStr.append(sp, errorCode).append(chStr, errorCode);
    495     strcpy(expected, longStr);
    496     strcat(expected, longStr+4);
    497     strcat(expected, longStr);
    498     strcat(expected, longStr+4);
    499     if (0 != strcmp(expected, chStr.data()) || (int32_t)strlen(expected) != chStr.length()) {
    500         errln("CharString(longStr).append(substring of self).append(self) failed.");
    501     }
    502     chStr.clear().append("abc", errorCode).append("defghij", 3, errorCode);
    503     if (0 != strcmp("abcdef", chStr.data()) || 6 != chStr.length()) {
    504         errln("CharString.clear().append(abc).append(defghij, 3) failed.");
    505     }
    506     chStr.appendInvariantChars(UNICODE_STRING_SIMPLE(
    507         "This is a long string that is meant to cause reallocation of the internal buffer of CharString."),
    508         errorCode);
    509     strcpy(expected, "abcdef");
    510     strcat(expected, longStr);
    511     if (0 != strcmp(expected, chStr.data()) || (int32_t)strlen(expected) != chStr.length()) {
    512         errln("CharString.appendInvariantChars(longStr) failed.");
    513     }
    514     int32_t appendCapacity = 0;
    515     char *buffer = chStr.getAppendBuffer(5, 10, appendCapacity, errorCode);
    516     if (errorCode.isFailure()) {
    517         return;
    518     }
    519     memcpy(buffer, "*****", 5);
    520     chStr.append(buffer, 5, errorCode);
    521     chStr.truncate(chStr.length()-3);
    522     strcat(expected, "**");
    523     if (0 != strcmp(expected, chStr.data()) || (int32_t)strlen(expected) != chStr.length()) {
    524         errln("CharString.getAppendBuffer().append(**) failed.");
    525     }
    526 
    527     UErrorCode ec = U_ZERO_ERROR;
    528     chStr.clear();
    529     chStr.appendInvariantChars(UnicodeString("The '@' character is not invariant."), ec);
    530     if (ec != U_INVARIANT_CONVERSION_ERROR) {
    531         errln("%s:%d expected U_INVARIANT_CONVERSION_ERROR, got %s", __FILE__, __LINE__, u_errorName(ec));
    532     }
    533     if (chStr.length() != 0) {
    534         errln("%s:%d expected length() = 0, got %d", __FILE__, __LINE__, chStr.length());
    535     }
    536 }
    537 
    538 void
    539 StringTest::TestCStr() {
    540     const char *cs = "This is a test string.";
    541     UnicodeString us(cs);
    542     if (0 != strcmp(CStr(us)(), cs)) {
    543         errln("%s:%d CStr(s)() failed. Expected \"%s\", got \"%s\"", __FILE__, __LINE__, cs, CStr(us)());
    544     }
    545 }
    546