/********************************************************************
 * COPYRIGHT: 
 * Copyright (c) 1997-1999, International Business Machines Corporation and
 * others. All Rights Reserved.
 ********************************************************************/
/********************************************************************************
*
* File CUCDTST.C
*
* Modification History:
*        Name                     Description            
*     Madhu Katragadda            Ported for C API, added tests for string functions
*********************************************************************************
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "unicode/utypes.h"
#include "unicode/putil.h"
#include "unicode/ustring.h"
#include "unicode/uloc.h"
#include "cstring.h"
#include "cmemory.h"
#include "cintltst.h"
#include "cucdtst.h"
#include "uparse.h"

/* test data ---------------------------------------------------------------- */

UChar*** dataTable = NULL;
const UChar  LAST_CHAR_CODE_IN_FILE = 0xFFFD;
const char tagStrings[] = "MnMcMeNdNlNoZsZlZpCcCfCsCoCnLuLlLtLmLoPcPdPsPePoSmScSkSoPiPf";
const int32_t tagValues[] =
    {
    /* Mn */ U_NON_SPACING_MARK,
    /* Mc */ U_COMBINING_SPACING_MARK,
    /* Me */ U_ENCLOSING_MARK,
    /* Nd */ U_DECIMAL_DIGIT_NUMBER,
    /* Nl */ U_LETTER_NUMBER,
    /* No */ U_OTHER_NUMBER,
    /* Zs */ U_SPACE_SEPARATOR,
    /* Zl */ U_LINE_SEPARATOR,
    /* Zp */ U_PARAGRAPH_SEPARATOR,
    /* Cc */ U_CONTROL_CHAR,
    /* Cf */ U_FORMAT_CHAR,
    /* Cs */ U_SURROGATE,
    /* Co */ U_PRIVATE_USE_CHAR,
    /* Cn */ U_UNASSIGNED,
    /* Lu */ U_UPPERCASE_LETTER,
    /* Ll */ U_LOWERCASE_LETTER,
    /* Lt */ U_TITLECASE_LETTER,
    /* Lm */ U_MODIFIER_LETTER,
    /* Lo */ U_OTHER_LETTER,
    /* Pc */ U_CONNECTOR_PUNCTUATION,
    /* Pd */ U_DASH_PUNCTUATION,
    /* Ps */ U_START_PUNCTUATION,
    /* Pe */ U_END_PUNCTUATION,
    /* Po */ U_OTHER_PUNCTUATION,
    /* Sm */ U_MATH_SYMBOL,
    /* Sc */ U_CURRENCY_SYMBOL,
    /* Sk */ U_MODIFIER_SYMBOL,
    /* So */ U_OTHER_SYMBOL,
    /* Pi */ U_INITIAL_PUNCTUATION,
    /* Pf */ U_FINAL_PUNCTUATION
    };

const char dirStrings[][5] = {
    "L",
    "R",
    "EN",
    "ES",
    "ET",   
    "AN",
    "CS",
    "B",
    "S",
    "WS",
    "ON",
    "LRE",
    "LRO",
    "AL",
    "RLE",
    "RLO",
    "PDF",
    "NSM",
    "BN"
};


void addUnicodeTest(TestNode** root)
{
    addTest(root, &TestUpperLower, "tsutil/cucdtst/TestUpperLower");
    addTest(root, &TestLetterNumber, "tsutil/cucdtst/TestLetterNumber");
    addTest(root, &TestMisc, "tsutil/cucdtst/TestMisc");
    addTest(root, &TestControlPrint, "tsutil/cucdtst/TestControlPrint");
    addTest(root, &TestIdentifier, "tsutil/cucdtst/TestIdentifier");
    addTest(root, &TestUnicodeData, "tsutil/cucdtst/TestUnicodeData");
    addTest(root, &TestStringCopy, "tsutil/cucdtst/TestStringCopy");
    addTest(root, &TestStringFunctions, "tsutil/cucdtst/TestStringFunctions");
    addTest(root, &TestStringSearching, "tsutil/cucdtst/TestStringSearching");
    addTest(root, &TestCharNames, "tsutil/cucdtst/TestCharNames");
    addTest(root, &TestMirroring, "tsutil/cucdtst/TestMirroring");
    addTest(root, &TestUnescape, "tsutil/cucdtst/TestUnescape");
    addTest(root, &TestCaseMapping, "tsutil/cucdtst/TestCaseMapping");
}

/*==================================================== */
/* test u_toupper() and u_tolower()                    */
/*==================================================== */
static void TestUpperLower()
{
    const UChar upper[] = {0x41, 0x42, 0x00b2, 0x01c4, 0x01c6, 0x01c9, 0x01c8, 0x01c9, 0x000c, 0x0000};
    const UChar lower[] = {0x61, 0x62, 0x00b2, 0x01c6, 0x01c6, 0x01c9, 0x01c9, 0x01c9, 0x000c, 0x0000};
    U_STRING_DECL(upperTest, "abcdefg123hij.?:klmno", 21);
    U_STRING_DECL(lowerTest, "ABCDEFG123HIJ.?:KLMNO", 21);
    int i;

    U_STRING_INIT(upperTest, "abcdefg123hij.?:klmno", 21);
    U_STRING_INIT(lowerTest, "ABCDEFG123HIJ.?:KLMNO", 21);


    for(i=0; i < u_strlen(upper); i++){
        if(u_tolower(upper[i]) != lower[i]){
            log_err("FAILED u_tolower() for %lx Expected %lx Got %lx\n", upper[i], lower[i], u_tolower(upper[i]));
        }
       
    }
    log_verbose("testing upper lower\n");
    for (i = 0; i < 21; i++) {
        
        log_verbose("testing to upper to lower\n");
        if (u_isalpha(upperTest[i]) && !u_islower(upperTest[i]))
        {
            log_err("Failed isLowerCase test at  %c\n", upperTest[i]);
        }  
        else if (u_isalpha(lowerTest[i]) && !u_isupper(lowerTest[i]))
         {
            log_err("Failed isUpperCase test at %c\n", lowerTest[i]);
        }  
        else if (upperTest[i] != u_tolower(lowerTest[i]))
        {
            log_err("Failed case conversion from %c  To %c :\n", lowerTest[i], upperTest[i]);
            
        }
        else if (lowerTest[i] != u_toupper(upperTest[i]))
         {
            log_err("Failed case conversion : %c To %c \n", upperTest[i], lowerTest[i]);
        }
        else if (upperTest[i] != u_tolower(upperTest[i]))
        {
            log_err("Failed case conversion with itself: %c\n", upperTest[i]);
        }
        else if (lowerTest[i] != u_toupper(lowerTest[i]))
        {   
            log_err("Failed case conversion with itself: %c\n", lowerTest[i]);
        }
    }
    log_verbose("done testing upper Lower\n");

}

 
/* test isLetter(u_isapha()) and isDigit(u_isdigit()) */
static void TestLetterNumber()
{
    UChar i = 0x0000;

    for (i = 0x0041; i < 0x005B; i++) {
        log_verbose("Testing for isalpha\n");    
        if (!u_isalpha(i))
        {
            log_err("Failed isLetter test at  %.4X\n", i);
            
        }
    }
    for (i = 0x0660; i < 0x066A; i++) {
        log_verbose("Testing for isalpha\n"); 
        if (u_isalpha(i))
        {
            log_err("Failed isLetter test with numbers at %.4X\n", i);
            
        }
    }
    for (i = 0x0660; i < 0x066A; i++) {
        log_verbose("Testing for isdigit\n");
        if (!u_isdigit(i))
        {
            log_verbose("Failed isNumber test at %.4X\n", i);
        }
    }
    for (i = 0x0041; i < 0x005B; i++) {
        log_verbose("Testing for isalnum\n");    
        if (!u_isalnum(i))
        {
            log_err("Failed isAlNum test at  %.4X\n", i);
            
        }
    }
    for (i = 0x0660; i < 0x066A; i++) {
        log_verbose("Testing for isalnum\n");    
        if (!u_isalnum(i))
        {
            log_err("Failed isAlNum test at  %.4X\n", i);
        }
    }

}

/* Tests for isDefined(u_isdefined)(, isBaseForm(u_isbase()), isSpaceChar(u_isspace()), isWhiteSpace(), u_CharDigitValue(),u_CharCellWidth() */
static void TestMisc()
{
    const UChar sampleSpaces[] = {0x0020, 0x00a0, 0x2000, 0x2001, 0x2005};
    const UChar sampleNonSpaces[] = {0x61, 0x62, 0x63, 0x64, 0x74};
    const UChar sampleUndefined[] = {0xfff1, 0xfff7, 0xfa30};
    const UChar sampleDefined[] = {0x523E, 0x4f88, 0xfffd};
    const UChar sampleBase[] = {0x0061, 0x0031, 0x03d2};
    const UChar sampleNonBase[] = {0x002B, 0x0020, 0x203B};
    const UChar sampleChars[] = {0x000a, 0x0045, 0x4e00, 0xDC00};
    const UChar sampleDigits[]= {0x0030, 0x0662, 0x0F23, 0x0ED5};
    const UChar sample2Digits[]= {0x3007, 0x4e00, 0x4e8c, 0x4e09, 0x56d8, 0x4e94, 0x516d, 0x4e03, 0x516b, 0x4e5d}; /*sp characters not in the proptable*/
    const UChar sampleNonDigits[] = {0x0010, 0x0041, 0x0122, 0x68FE};
    const UChar sampleWhiteSpaces[] = {0x2008, 0x2009, 0x200a, 0x001c, 0x000c};
    const UChar sampleNonWhiteSpaces[] = {0x61, 0x62, 0x3c, 0x28, 0x3f};
                        

    const int32_t sampleDigitValues[] = {0, 2, 3, 5};
    const int32_t sample2DigitValues[]= {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; /*special characters not in the properties table*/
                                         

    enum ECellWidths         /* pasted in here from unicode.h */
    {
        ZERO_WIDTH              = 0,
        HALF_WIDTH              = 1,
        FULL_WIDTH              = 2,
        NEUTRAL                 = 3
    };

    const uint16_t sampleCellWidth[] = { ZERO_WIDTH, 
                                         HALF_WIDTH, 
                                         FULL_WIDTH, 
                                         NEUTRAL};
    int i;
    char icuVersion[U_MAX_VERSION_STRING_LENGTH];
    UVersionInfo realVersion;

    memset(icuVersion, 0, U_MAX_VERSION_STRING_LENGTH);
    for (i = 0; i < 5; i++) {
      log_verbose("Testing for isspace and nonspaces\n");
        if (!(u_isspace(sampleSpaces[i])) ||
                (u_isspace(sampleNonSpaces[i])))
        {
            log_err("Space char test error : %d or %d \n", (int32_t)sampleSpaces[i], (int32_t)sampleNonSpaces[i]);
        }
    }
    for (i = 0; i < 5; i++) {
      log_verbose("Testing for isspace and nonspaces\n");
        if (!(u_isWhitespace(sampleWhiteSpaces[i])) ||
                (u_isWhitespace(sampleNonWhiteSpaces[i])))
        {
            log_err("White Space char test error : %lx or %lx \n", sampleWhiteSpaces[i], sampleNonWhiteSpaces[i]);
        }
    }
    for (i = 0; i < 3; i++) {
      log_verbose("Testing for isdefined\n");
        if ((u_isdefined(sampleUndefined[i])) ||
                !(u_isdefined(sampleDefined[i])))
        {
            log_err("Undefined char test error : %d  or  %d\n", (int32_t)sampleUndefined[i], (int32_t)sampleDefined[i]);
        }
    }
    for (i = 0; i < 3; i++) {
      log_verbose("Testing for isbase\n");
        if ((u_isbase(sampleNonBase[i])) ||
                !(u_isbase(sampleBase[i])))
        {
            log_err("Non-baseform char test error : %d or %d",(int32_t)sampleNonBase[i], (int32_t)sampleBase[i]);
        }
    }
    for (i = 0; i < 4; i++) {
      log_verbose("Testing for charcellwidth\n");
        if (u_charCellWidth(sampleChars[i]) != sampleCellWidth[i])
        {
            log_err("Cell width char test error : %d  \n", (int32_t)sampleChars[i]);
        }
    }
    for (i = 0; i < 4; i++) {
       log_verbose("Testing for isdigit \n"); 
        if ((u_isdigit(sampleDigits[i]) && 
            (u_charDigitValue(sampleDigits[i])!= sampleDigitValues[i])) ||
            (u_isdigit(sampleNonDigits[i]))) {
            log_err("Digit char test error : %lx   or   %lx\n", sampleDigits[i], sampleNonDigits[i]);
        }
    }
    for (i = 0; i < 10; i++) {
       log_verbose("Testing for u_charDigitValue for special values not existing in prop table %lx \n",  sample2Digits[i]); 
        if (u_charDigitValue(sample2Digits[i])!= sample2DigitValues[i]) 
        {
            log_err("Digit char test error : %lx\n", sample2Digits[i]);
        }
    }
    /* Tests the ICU version #*/
    u_getVersion(realVersion);
    u_versionToString(realVersion, icuVersion);
    if (strncmp(icuVersion, U_ICU_VERSION, uprv_min(strlen(icuVersion), strlen(U_ICU_VERSION))) != 0)
    {
        log_err("ICU version test failed. Header says=%s, got=%s \n", U_ICU_VERSION, icuVersion);
    }
#if defined(ICU_VERSION)
    /* test only happens where we have configure.in with VERSION - sanity check. */
    if(strcmp(U_ICU_VERSION, ICU_VERSION))
      {
        log_err("ICU version mismatch: Header says %s, build environment says %s.\n",  U_ICU_VERSION, ICU_VERSION);
      }
#endif

}


/* Tests for isControl(u_iscntrl()) and isPrintable(u_isprint()) */
static void TestControlPrint()
{
    const UChar sampleControl[] = {0x001b, 0x0097, 0x0082};
    const UChar sampleNonControl[] = {0x61, 0x0031, 0x00e2};
    const UChar samplePrintable[] = {0x0042, 0x005f, 0x2014};
    const UChar sampleNonPrintable[] = {0x200c, 0x009f, 0x001b};
    int i;
    for (i = 0; i < 3; i++) {
        log_verbose("Testing for iscontrol\n");
        if (!u_iscntrl(sampleControl[i]))
        {
            log_err("Control char test error : %d should be control but is not\n", (int32_t)sampleControl[i]);
        }
        if (u_iscntrl(sampleNonControl[i]))
        {
            log_err("Control char test error : %d should not be control but is\n", (int32_t)sampleNonControl[i]);
        }
    }
    for (i = 0; i < 3; i++) {
        log_verbose("testing for isprintable\n");
        if (!u_isprint(samplePrintable[i]))
        {
            log_err("Printable char test error : %d should be printable but is not\n", (int32_t)samplePrintable[i]);
        }
        if (u_isprint(sampleNonPrintable[i]))
        {
            log_err("Printable char test error : %d should not be printable but is\n", (int32_t)sampleNonPrintable[i]);
        }
    }
}

/* u_isJavaIDStart, u_isJavaIDPart, u_isIDStart(), u_isIDPart(), u_isIDIgnorable()*/
static void TestIdentifier()
{
    const UChar sampleJavaIDStart[] = {0x0071, 0x00e4, 0x005f};
    const UChar sampleNonJavaIDStart[] = {0x0020, 0x2030, 0x0082};
    const UChar sampleJavaIDPart[] = {0x005f, 0x0032, 0x0045};
    const UChar sampleNonJavaIDPart[] = {0x2030, 0x2020, 0x0020};
    const UChar sampleUnicodeIDStart[] = {0x0250, 0x00e2, 0x0061};
    const UChar sampleNonUnicodeIDStart[] = {0x2000, 0x000a, 0x2019};
    const UChar sampleUnicodeIDPart[] = {0x005f, 0x0032, 0x0045};
    const UChar sampleNonUnicodeIDPart[] = {0x2030, 0x00a3, 0x0020};
    const UChar sampleIDIgnore[] = {0x0006, 0x0010, 0x206b};
    const UChar sampleNonIDIgnore[] = {0x0075, 0x00a3, 0x0061};

    int i;
    for (i = 0; i < 3; i++) {
        log_verbose("Testing sampleJavaID start \n");
        if (!(u_isJavaIDStart(sampleJavaIDStart[i])) ||
                (u_isJavaIDStart(sampleNonJavaIDStart[i])))
            log_err("Java ID Start char test error : %lx or %lx\n",
            sampleJavaIDStart[i], sampleNonJavaIDStart[i]);
    }
    for (i = 0; i < 3; i++) {
        log_verbose("Testing sampleJavaID part \n");
        if (!(u_isJavaIDPart(sampleJavaIDPart[i])) ||
                (u_isJavaIDPart(sampleNonJavaIDPart[i])))
            log_err("Java ID Part char test error : %lx or %lx\n",
             sampleJavaIDPart[i], sampleNonJavaIDPart[i]);
    }
    for (i = 0; i < 3; i++) {
        log_verbose("Testing sampleUnicodeID start \n");
        /* T_test_logln_ustr((int32_t)i); */
        if (!(u_isIDStart(sampleUnicodeIDStart[i])) ||
                (u_isIDStart(sampleNonUnicodeIDStart[i])))
        {
            log_err("Unicode ID Start char test error : %lx  or  %lx\n", sampleUnicodeIDStart[i],
                                    sampleNonUnicodeIDStart[i]);
        }
    }
    for (i = 2; i < 3; i++) {   /* nos *** starts with 2 instead of 0, until clarified */
        log_verbose("Testing sample unicode ID part \n");
        /* T_test_logln_ustr((int32_t)i); */
        if (!(u_isIDPart(sampleUnicodeIDPart[i])) ||
                (u_isIDPart(sampleNonUnicodeIDPart[i])))
           {
            log_err("Unicode ID Part char test error : %lx  or  %lx", sampleUnicodeIDPart[i], sampleNonUnicodeIDPart[i]);
            }
    }
    for (i = 0; i < 3; i++) {
        log_verbose("Testing  sampleId ignore\n");
        /*T_test_logln_ustr((int32_t)i); */
        if (!(u_isIDIgnorable(sampleIDIgnore[i])) ||
                (u_isIDIgnorable(sampleNonIDIgnore[i])))
        {
            log_verbose("ID ignorable char test error : %d  or  %d\n", sampleIDIgnore[i], sampleNonIDIgnore[i]);
        }
    }
}

/* for each line of UnicodeData.txt, check some of the properties */
static void
unicodeDataLineFn(void *context,
                  char *fields[][2], int32_t fieldCount,
                  UErrorCode *pErrorCode) {
    char *end;
    uint32_t value;
    UChar32 c;
    int8_t type;

    /* get the character code, field 0 */
    c=uprv_strtoul(fields[0][0], &end, 16);
    if(end<=fields[0][0] || end!=fields[0][1]) {
        log_err("error: syntax error in field 0 at %s\n", fields[0][0]);
        return;
    }
    if((uint32_t)c>=0x110000) {
        log_err("error in UnicodeData.txt: code point %lu out of range\n", c);
        return;
    }

    /* get general category, field 2 */
    /* we override the general category of some control characters */
    switch(c) {
    case 9:
    case 0xb:
    case 0x1f:
        type = U_SPACE_SEPARATOR;
        break;
    case 0xc:
        type = U_LINE_SEPARATOR;
        break;
    case 0xa:
    case 0xd:
    case 0x1c:
    case 0x1d:
    case 0x1e:
    case 0x85:
        type = U_PARAGRAPH_SEPARATOR;
        break;
    default:
        *fields[2][1]=0;
        type = (int8_t)tagValues[MakeProp(fields[2][0])];
        break;
    }
    if(u_charType(c)!=type) {
        log_err("error: u_charType(U+%04lx)==%u instead of %u\n", c, u_charType(c), type);
    }

    /* get canonical combining class, field 3 */
    value=uprv_strtoul(fields[3][0], &end, 10);
    if(end<=fields[3][0] || end!=fields[3][1]) {
        log_err("error: syntax error in field 3 at code 0x%lx\n", c);
        return;
    }
    if(value>255) {
        log_err("error in UnicodeData.txt: combining class %lu out of range\n", value);
        return;
    }
    if(value!=u_getCombiningClass(c)) {
        log_err("error: u_getCombiningClass(U+%04lx)==%hu instead of %lu\n", c, u_getCombiningClass(c), value);
    }

    /* get BiDi category, field 4 */
    *fields[4][1]=0;
    if(u_charDirection(c)!=MakeDir(fields[4][0])) {
        log_err("error: u_charDirection(U+%04lx)==%u instead of %u (%s)\n", c, u_charDirection(c), MakeDir(fields[4][0]), fields[4][0]);
    }

    /* get uppercase mapping, field 12 */
    if(fields[12][0]!=fields[12][1]) {
        value=uprv_strtoul(fields[12][0], &end, 16);
        if(end!=fields[12][1]) {
            log_err("error: syntax error in field 12 at code 0x%lx\n", c);
            return;
        }
        if((UChar32)value!=u_toupper(c)) {
            log_err("error: u_toupper(U+%04lx)==U+%04lx instead of U+%04lx\n", c, u_toupper(c), value);
        }
    } else {
        /* no case mapping: the API must map the code point to itself */
        if(c!=u_toupper(c)) {
            log_err("error: U+%04lx does not have an uppercase mapping but u_toupper()==U+%04lx\n", c, u_toupper(c));
        }
    }

    /* get lowercase mapping, field 13 */
    if(fields[13][0]!=fields[13][1]) {
        value=uprv_strtoul(fields[13][0], &end, 16);
        if(end!=fields[13][1]) {
            log_err("error: syntax error in field 13 at code 0x%lx\n", c);
            return;
        }
        if((UChar32)value!=u_tolower(c)) {
            log_err("error: u_tolower(U+%04lx)==U+%04lx instead of U+%04lx\n", c, u_tolower(c), value);
        }
    } else {
        /* no case mapping: the API must map the code point to itself */
        if(c!=u_tolower(c)) {
            log_err("error: U+%04lx does not have a lowercase mapping but u_tolower()==U+%04lx\n", c, u_tolower(c));
        }
    }

    /* get titlecase mapping, field 14 */
    if(fields[14][0]!=fields[14][1]) {
        value=uprv_strtoul(fields[14][0], &end, 16);
        if(end!=fields[14][1]) {
            log_err("error: syntax error in field 14 at code 0x%lx\n", c);
            return;
        }
        if((UChar32)value!=u_totitle(c)) {
            log_err("error: u_totitle(U+%04lx)==U+%04lx instead of U+%04lx\n", c, u_totitle(c), value);
        }
    } else {
        /* no case mapping: the API must map the code point to itself */
        if(c!=u_totitle(c)) {
            log_err("error: U+%04lx does not have a titlecase mapping but u_totitle()==U+%04lx\n", c, u_totitle(c));
        }
    }
}

/* tests for several properties */
static void TestUnicodeData()
{
    char newPath[256];
    char backupPath[256];
    UVersionInfo expectVersionArray;
    UVersionInfo versionArray;
    char *fields[15][2];
    UErrorCode errorCode;

    /* Look inside ICU_DATA first */
    strcpy(newPath, u_getDataDirectory());
    strcat(newPath, "unidata" U_FILE_SEP_STRING "UnicodeData.txt");

#if defined (U_SRCDATADIR) /* points to the icu/data directory */
    /* If defined, we'll try an alternate directory second */
    strcpy(backupPath, U_SRCDATADIR);
#else
    strcpy(backupPath, u_getDataDirectory());
    strcat(backupPath, ".." U_FILE_SEP_STRING ".." U_FILE_SEP_STRING "data");
    strcat(backupPath, U_FILE_SEP_STRING);
#endif
    strcat(backupPath, "unidata" U_FILE_SEP_STRING "UnicodeData.txt");

    u_versionFromString(expectVersionArray, U_UNICODE_VERSION);
    u_getUnicodeVersion(versionArray);
    if(memcmp(versionArray, expectVersionArray, U_MAX_VERSION_LENGTH) != 0)
    {
        log_err("Testing u_getUnicodeVersion() - expected " U_UNICODE_VERSION " got %d.%d.%d.%d\n",
        versionArray[0], versionArray[1], versionArray[2], versionArray[3]);
    }

#if defined(ICU_UNICODE_VERSION)
    /* test only happens where we have configure.in with UNICODE_VERSION - sanity check. */
    if(strcmp(U_UNICODE_VERSION, ICU_UNICODE_VERSION))
    {
         log_err("Testing configure.in's ICU_UNICODE_VERSION - expected " U_UNICODE_VERSION " got " ICU_UNICODE_VERSION "\n");
    }
#endif

    if (u_charScript((UChar)0x0041 != U_BASIC_LATIN)) {
        log_err("Unicode character script property failed !\n");
    }

    errorCode=U_ZERO_ERROR;
    u_parseDelimitedFile(backupPath, ';', fields, 15, unicodeDataLineFn, NULL, &errorCode);
    if(errorCode==U_FILE_ACCESS_ERROR) {
        errorCode=U_ZERO_ERROR;
        u_parseDelimitedFile(newPath, ';', fields, 15, unicodeDataLineFn, NULL, &errorCode);
    }
    if(U_FAILURE(errorCode)) {
        log_err("error parsing UnicodeData.txt: %s\n", u_errorName(errorCode));
    }
}

/*internal functions ----*/
static int32_t MakeProp(char* str) 
{
    int32_t result = 0;
    char* matchPosition =0;
    
    matchPosition = strstr(tagStrings, str);
    if (matchPosition == 0) 
    {
        log_err("unrecognized type letter ");
        log_err(str);
    }
    else result = ((matchPosition - tagStrings) / 2);
    return result;
}

static int32_t MakeDir(char* str) 
{
    int32_t pos = 0;
    for (pos = 0; pos < 19; pos++) {
        if (strcmp(str, dirStrings[pos]) == 0) {
            return pos;
        }
    }
    return -1;
}
/*----------------*/


static const char* raw[3][4] = {
   
    /* First String */
    {   "English_",  "French_",   "Croatian_", "English_"},
    /* Second String */
    {   "United States",    "France",   "Croatia",  "Unites States"},
   
   /* Concatenated string */
    {   "English_United States", "French_France", "Croatian_Croatia", "English_United States"}
};

static void setUpDataTable()
{
    int32_t i,j;
    if(dataTable == NULL) {
        dataTable = (UChar***)calloc(sizeof(UChar**),3);

            for (i = 0; i < 3; i++) {
              dataTable[i] = (UChar**)calloc(sizeof(UChar*),4);
                for (j = 0; j < 4; j++){
                    dataTable[i][j] = (UChar*) malloc(sizeof(UChar)*(strlen(raw[i][j])+1));
                    u_uastrcpy(dataTable[i][j],raw[i][j]);
                }
            }
    }
}

static void cleanUpDataTable()
{
    int32_t i,j;
    if(dataTable != NULL) {
        for (i=0; i<3; i++) {
            for(j = 0; j<4; j++) {
                free(dataTable[i][j]);
            }
            free(dataTable[i]);
        }
        free(dataTable);
    }
    dataTable = NULL;
}

/*Tests  for u_strcat(),u_strcmp(), u_strlen(), u_strcpy(),u_strncat(),u_strncmp(),u_strncpy, u_uastrcpy(),u_austrcpy(), u_uastrncpy(); */
static void TestStringFunctions()
{
    int32_t i,j,k;
    UChar temp[512];
    char test[512];
    char tempOut[512];

    setUpDataTable();

    log_verbose("Testing u_strlen()\n");
    if( u_strlen(dataTable[0][0])!= u_strlen(dataTable[0][3]) || u_strlen(dataTable[0][0]) == u_strlen(dataTable[0][2]))
        log_err("There is an error in u_strlen()");

    log_verbose("Testing u_strcpy() and u_strcmp)\n");

    for(i=0;i<3;++i)
    {
        for(j=0;j<4;++j)
        {
            log_verbose("Testing  %s  \n", u_austrcpy(tempOut, dataTable[i][j]));
            u_uastrcpy(temp, "");
            u_strcpy(temp,dataTable[i][j]);
        
            if(u_strcmp(temp,dataTable[i][j])!=0)
                log_err("something threw an error in u_strcpy() or u_strcmp()\n");
        }
    }

    log_verbose("testing u_strcat()\n");
    i=0;
    for(j=0; j<2;++j)
    {
        u_uastrcpy(temp, "");
        u_strcpy(temp,dataTable[i][j]);
        u_strcat(temp,dataTable[i+1][j]);
        if(u_strcmp(temp,dataTable[i+2][j])!=0)
            log_err("something threw an error in u_strcat()\n");

    }
    log_verbose("Testing u_strncmp()\n");
    for(i=0,j=0;j<4; ++j)
    {
        k=u_strlen(dataTable[i][j]);
        if(u_strncmp(dataTable[i][j],dataTable[i+2][j],k)!=0)
            log_err("Something threw an error in u_strncmp\n");
    }


    log_verbose("Testing u_strncat\n");
    for(i=0,j=0;j<4; ++j)
    {
        k=u_strlen(dataTable[i][j]);

        u_uastrcpy(temp,"");

        if(u_strcmp(u_strncat(temp,dataTable[i+2][j],k),dataTable[i][j])!=0)
            log_err("something threw an error in u_strncat or u_uastrcpy()\n");

    }

    log_verbose("Testing u_strncpy()\n");
    for(i=0,j=0;j<4; ++j)
    {
        k=u_strlen(dataTable[i][j]);
        u_uastrcpy(temp,"");
        u_strncpy(temp,dataTable[i+2][j],k);
        
        if(u_strcmp(temp,dataTable[i][j])!=0)
            log_err("something threw an error in u_strncpy()\n");
    }

    log_verbose("Testing u_strchr()\n");

    for(i=2,j=0;j<4;j++)
    {
        UChar *findPtr = u_strchr(dataTable[i][j],'_');

        log_verbose("%s ", u_austrcpy(tempOut, findPtr));

        if (findPtr == NULL || *findPtr != '_') {
            log_err("strchr can't find '_' in the string\n");
        }

        findPtr = u_strchr(dataTable[i][j], 0);
        if (findPtr != (&(dataTable[i][j][u_strlen(dataTable[i][j])]))) {
            log_err("strchr can't find NULL in the string\n");
        }
    }


    log_verbose("Testing u_austrcpy()");
    u_austrcpy(test,dataTable[0][0]);
    if(strcmp(test,raw[0][0])!=0)
        log_err("There is an error in u_austrcpy()");


    log_verbose("Testing u_strtok_r()");
    {
        const char tokString[]  = "  ,  1 2 3  AHHHHH! 5.5 6 7    ,        8\n";
        const char *tokens[] = {",", "1", "2", "3", "AHHHHH!", "5.5", "6", "7", "8\n"};
        const char *delim1 = " ";
        const char *delim2 = " ,";
        UChar delimBuf[sizeof(test)];
        UChar currTokenBuf[sizeof(tokString)];
        UChar *state;
        uint32_t currToken = 0;
        UChar *ptr;

        u_uastrcpy(temp, tokString);
        u_uastrcpy(delimBuf, delim1);

        ptr = u_strtok_r(temp, delimBuf, &state);
        u_uastrcpy(delimBuf, delim2);
        while (ptr != NULL) {
            u_uastrcpy(currTokenBuf, tokens[currToken]);
            if (u_strcmp(ptr, currTokenBuf) != 0) {
                log_err("u_strtok_r mismatch at %d. Got: %s, Expected: %s\n", currToken, ptr, tokens[currToken]);
            }
            ptr = u_strtok_r(NULL, delimBuf, &state);
            currToken++;
        }

        if (currToken != sizeof(tokens)/sizeof(tokens[0])) {
            log_err("Didn't get correct number of tokens\n");
        }
        u_uastrcpy(currTokenBuf, "");
        if (u_strtok_r(currTokenBuf, delimBuf, &state) != NULL) {
            log_err("Didn't get NULL for empty string\n");
        }
        if (state != NULL) {
            log_err("State should be NULL for empty string\n");
        }
    }

    /* test u_strcmpCodePointOrder() */
    {
        /* these strings are in ascending order */
        static const UChar strings[5][3]={
            { 0x61, 0 },            /* U+0061 */
            { 0x20ac, 0 },          /* U+20ac */
            { 0xff61, 0 },          /* U+ff61 */
            { 0xd800, 0xdc02, 0 },  /* U+10002 */
            { 0xd84d, 0xdc56, 0 }   /* U+23456 */
        };

        for(i=0; i<4; ++i) {
            if(u_strcmpCodePointOrder(strings[i], strings[i+1])>=0) {
                log_err("error: u_strcmpCodePointOrder() fails for string %d and the following one\n", i);
            }
        }
    }

    cleanUpDataTable();
}

static void TestStringSearching()
{
    UChar ucharBuf[255];
    const UChar testString[] = {0x0061, 0x0062, 0x0063, 0x0064, 0x0064, 0x0061, 0};
    const UChar testSurrogateString[] = {0xdbff, 0x0061, 0x0062, 0xdbff, 0xdfff, 0x0063, 0x0064, 0x0064, 0xdbff, 0xdfff, 0xdb00, 0xdf00, 0x0061, 0};
    const UChar surrMatchSet1[] = {0xdbff, 0xdfff, 0};
    const UChar surrMatchSet2[] = {0x0061, 0x0062, 0xdbff, 0xdfff, 0};
    const UChar surrMatchSet3[] = {0xdb00, 0xdf00, 0xdbff, 0xdfff, 0};
    const UChar surrMatchSet4[] = {0x0000};
    const UChar surrMatchSetBad[] = {0xdbff, 0x0061, 0};
    const UChar surrMatchSetBad2[] = {0x0061, 0xdbff, 0};
    const UChar surrMatchSetBad3[] = {0xdbff, 0x0061, 0x0062, 0xdbff, 0xdfff, 0};   /* has partial surrogate */

    log_verbose("Testing u_strpbrk()");

    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "a")) != &testString[0]) {
        log_err("u_strpbrk couldn't find first letter a.\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "dc")) != &testString[2]) {
        log_err("u_strpbrk couldn't find d or c.\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "cd")) != &testString[2]) {
        log_err("u_strpbrk couldn't find c or d.\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "cdh")) != &testString[2]) {
        log_err("u_strpbrk couldn't find c, d or h.\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "f")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"f\".\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "fg")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"fg\".\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "gf")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"gf\".\n");
    }
    if (u_strpbrk(testString, u_uastrcpy(ucharBuf, "")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"\".\n");
    }

    log_verbose("Testing u_strpbrk() with surrogates");

    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "a")) != &testSurrogateString[1]) {
        log_err("u_strpbrk couldn't find first letter a.\n");
    }
    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "dc")) != &testSurrogateString[5]) {
        log_err("u_strpbrk couldn't find d or c.\n");
    }
    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "cd")) != &testSurrogateString[5]) {
        log_err("u_strpbrk couldn't find c or d.\n");
    }
    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "cdh")) != &testSurrogateString[5]) {
        log_err("u_strpbrk couldn't find c, d or h.\n");
    }
    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "f")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"f\".\n");
    }
    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "fg")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"fg\".\n");
    }
    if (u_strpbrk(testSurrogateString, u_uastrcpy(ucharBuf, "gf")) != NULL) {
        log_err("u_strpbrk didn't return NULL for \"gf\".\n");
    }
    if (u_strpbrk(testSurrogateString, surrMatchSet1) != &testSurrogateString[3]) {
        log_err("u_strpbrk couldn't find \"0xdbff, 0xdfff\".\n");
    }
    if (u_strpbrk(testSurrogateString, surrMatchSet2) != &testSurrogateString[1]) {
        log_err("u_strpbrk couldn't find \"0xdbff, a, b, 0xdbff, 0xdfff\".\n");
    }
    if (u_strpbrk(testSurrogateString, surrMatchSet3) != &testSurrogateString[3]) {
        log_err("u_strpbrk couldn't find \"0xdb00, 0xdf00, 0xdbff, 0xdfff\".\n");
    }
    if (u_strpbrk(testSurrogateString, surrMatchSet4) != NULL) {
        log_err("u_strpbrk should have returned NULL for empty string.\n");
    }
    if (u_strpbrk(testSurrogateString, surrMatchSetBad) != &testSurrogateString[0]) {
        log_err("u_strpbrk should have found bad surrogate.\n");
    }

    log_verbose("Testing u_strcspn()");

    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "a")) != 0) {
        log_err("u_strcspn couldn't find first letter a.\n");
    }
    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "dc")) != 2) {
        log_err("u_strcspn couldn't find d or c.\n");
    }
    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "cd")) != 2) {
        log_err("u_strcspn couldn't find c or d.\n");
    }
    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "cdh")) != 2) {
        log_err("u_strcspn couldn't find c, d or h.\n");
    }
    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "f")) != u_strlen(testString)) {
        log_err("u_strcspn didn't return NULL for \"f\".\n");
    }
    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "fg")) != u_strlen(testString)) {
        log_err("u_strcspn didn't return NULL for \"fg\".\n");
    }
    if (u_strcspn(testString, u_uastrcpy(ucharBuf, "gf")) != u_strlen(testString)) {
        log_err("u_strcspn didn't return NULL for \"gf\".\n");
    }

    log_verbose("Testing u_strcspn() with surrogates");

    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "a")) != 1) {
        log_err("u_strcspn couldn't find first letter a.\n");
    }
    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "dc")) != 5) {
        log_err("u_strcspn couldn't find d or c.\n");
    }
    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "cd")) != 5) {
        log_err("u_strcspn couldn't find c or d.\n");
    }
    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "cdh")) != 5) {
        log_err("u_strcspn couldn't find c, d or h.\n");
    }
    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "f")) != u_strlen(testSurrogateString)) {
        log_err("u_strcspn didn't return NULL for \"f\".\n");
    }
    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "fg")) != u_strlen(testSurrogateString)) {
        log_err("u_strcspn didn't return NULL for \"fg\".\n");
    }
    if (u_strcspn(testSurrogateString, u_uastrcpy(ucharBuf, "gf")) != u_strlen(testSurrogateString)) {
        log_err("u_strcspn didn't return NULL for \"gf\".\n");
    }
    if (u_strcspn(testSurrogateString, surrMatchSet1) != 3) {
        log_err("u_strcspn couldn't find \"0xdbff, 0xdfff\".\n");
    }
    if (u_strcspn(testSurrogateString, surrMatchSet2) != 1) {
        log_err("u_strcspn couldn't find \"a, b, 0xdbff, 0xdfff\".\n");
    }
    if (u_strcspn(testSurrogateString, surrMatchSet3) != 3) {
        log_err("u_strcspn couldn't find \"0xdb00, 0xdf00, 0xdbff, 0xdfff\".\n");
    }
    if (u_strcspn(testSurrogateString, surrMatchSet4) != u_strlen(testSurrogateString)) {
        log_err("u_strcspn should have returned strlen for empty string.\n");
    }


    log_verbose("Testing u_strspn()");

    if (u_strspn(testString, u_uastrcpy(ucharBuf, "a")) != 1) {
        log_err("u_strspn couldn't skip first letter a.\n");
    }
    if (u_strspn(testString, u_uastrcpy(ucharBuf, "ab")) != 2) {
        log_err("u_strspn couldn't skip a or b.\n");
    }
    if (u_strspn(testString, u_uastrcpy(ucharBuf, "ba")) != 2) {
        log_err("u_strspn couldn't skip a or b.\n");
    }
    if (u_strspn(testString, u_uastrcpy(ucharBuf, "f")) != 0) {
        log_err("u_strspn didn't return 0 for \"f\".\n");
    }
    if (u_strspn(testString, u_uastrcpy(ucharBuf, "dc")) != 0) {
        log_err("u_strspn couldn't find first letter a (skip d or c).\n");
    }
    if (u_strspn(testString, u_uastrcpy(ucharBuf, "abcd")) != u_strlen(testString)) {
        log_err("u_strspn couldn't skip over the whole string.\n");
    }
    if (u_strspn(testString, u_uastrcpy(ucharBuf, "")) != 0) {
        log_err("u_strspn should have returned 0 for empty string.\n");
    }

    log_verbose("Testing u_strspn() with surrogates");
    if (u_strspn(testSurrogateString, surrMatchSetBad) != 2) {
        log_err("u_strspn couldn't skip 0xdbff or a.\n");
    }
    if (u_strspn(testSurrogateString, surrMatchSetBad2) != 2) {
        log_err("u_strspn couldn't skip 0xdbff or a.\n");
    }
    if (u_strspn(testSurrogateString, u_uastrcpy(ucharBuf, "f")) != 0) {
        log_err("u_strspn couldn't skip d or c (skip first letter).\n");
    }
    if (u_strspn(testSurrogateString, u_uastrcpy(ucharBuf, "dc")) != 0) {
        log_err("u_strspn couldn't skip d or c (skip first letter).\n");
    }
    if (u_strspn(testSurrogateString, u_uastrcpy(ucharBuf, "cd")) != 0) {
        log_err("u_strspn couldn't skip d or c (skip first letter).\n");
    }
    if (u_strspn(testSurrogateString, testSurrogateString) != u_strlen(testSurrogateString)) {
        log_err("u_strspn couldn't skip whole string.\n");
    }
    if (u_strspn(testSurrogateString, surrMatchSet1) != 0) {
        log_err("u_strspn couldn't skip \"0xdbff, 0xdfff\" (get first letter).\n");
    }
    if (u_strspn(testSurrogateString, surrMatchSetBad3) != 5) {
        log_err("u_strspn couldn't skip \"0xdbff, a, b, 0xdbff, 0xdfff\".\n");
    }
    if (u_strspn(testSurrogateString, surrMatchSet4) != 0) {
        log_err("u_strspn should have returned 0 for empty string.\n");
    }
}

static void TestStringCopy()
{
    UChar temp[40];
    UChar *result=0;
    UChar subString[5];
    UChar uchars[]={0x61, 0x62, 0x63, 0x00};

    log_verbose("Testing u_uastrncpy() and u_uastrcpy()");

    u_uastrcpy(temp, "abc");
    if(u_strcmp(temp, uchars) != 0) {
        log_err("There is an error in u_uastrcpy() Expected %s Got %s\n", austrdup(uchars), austrdup(temp));
    }

    temp[0] = 0xFB; /* load garbage into it */
    temp[1] = 0xFB;
    temp[2] = 0xFB;
    temp[3] = 0xFB;

    u_uastrncpy(temp, "abcabcabc", 3);
    if(u_strncmp(uchars, temp, 3) != 0){
        log_err("There is an error in u_uastrncpy() Expected %s Got %s\n", austrdup(uchars), austrdup(temp));
    }
    if(temp[3] != 0xFB) {
        log_err("u_austrncpy wrote past it's bounds. Expected undisturbed byte at 3\n");
    }
    /*Testing u_strchr()*/
    log_verbose("Testing u_strchr\n");
    temp[0]=0x42;
    temp[1]=0x62;
    temp[2]=0x62;
    temp[3]=0x63;
    temp[4]=0xd841;
    temp[5]=0xd841;
    temp[6]=0xdc02;
    temp[7]=0;
    result=u_strchr(temp, (UChar)0x62);
    if(result != temp+1){
        log_err("There is an error in u_strchr() Expected match at position 1 Got %ld (pointer 0x%lx)\n", result-temp, result);
    }
    /*Testing u_strstr()*/
    log_verbose("Testing u_strstr\n");
    subString[0]=0x62;
    subString[1]=0x63;
    subString[2]=0;
    result=u_strstr(temp, subString);
    if(result != temp+2){
        log_err("There is an error in u_strstr() Expected match at position 2 Got %ld (pointer 0x%lx)\n", result-temp, result);
    }
    result=u_strstr(temp, subString+2); /* subString+2 is an empty string */
    if(result != temp){
        log_err("There is an error in u_strstr() Expected match at position 0 Got %ld (pointer 0x%lx)\n", result-temp, result);
    }
    result=u_strstr(subString, temp);
    if(result != NULL){
        log_err("There is an error in u_strstr() Expected NULL \"not found\" Got non-NULL \"found\" result\n");
    }

    /*Testing u_strchr32*/
    log_verbose("Testing u_strchr32\n");
    result=u_strchr32(temp, (UChar32)0x62);
    if(result != temp+1){
        log_err("There is an error in u_strchr32() Expected match at position 1 Got %ld (pointer 0x%lx)\n", result-temp, result);
    }
    result=u_strchr32(temp, (UChar32)0xfb);
    if(result != NULL){
        log_err("There is an error in u_strchr32() Expected NULL \"not found\" Got non-NULL \"found\" result\n");
    }
    result=u_strchr32(temp, (UChar32)0x20402);
    if(result != temp+5){
        log_err("There is an error in u_strchr32() Expected match at position 5 Got %ld (pointer 0x%lx)\n", result-temp, result);
    }

}


/* test u_charName() -------------------------------------------------------- */

static const struct {
    uint32_t code;
    const char *name, *oldName;
} names[]={
    {0x0061, "LATIN SMALL LETTER A", ""},
    {0x0284, "LATIN SMALL LETTER DOTLESS J WITH STROKE AND HOOK", "LATIN SMALL LETTER DOTLESS J BAR HOOK"},
    {0x3401, "CJK UNIFIED IDEOGRAPH-3401", ""},
    {0x7fed, "CJK UNIFIED IDEOGRAPH-7FED", ""},
    {0xac00, "HANGUL SYLLABLE GA", ""},
    {0xd7a3, "HANGUL SYLLABLE HIH", ""},
    {0xff08, "FULLWIDTH LEFT PARENTHESIS", "FULLWIDTH OPENING PARENTHESIS"},
    {0xffe5, "FULLWIDTH YEN SIGN", ""}
};

static UBool
enumCharNamesFn(void *context,
                UChar32 code, UCharNameChoice nameChoice,
                const char *name, UTextOffset length) {
    UTextOffset *pCount=(UTextOffset *)context;
    int i;

    if(length<=0 || length!=(UTextOffset)uprv_strlen(name)) {
        /* should not be called with an empty string or invalid length */
        log_err("u_enumCharName(0x%lx)=%s but length=%ld\n", name, length);
        return TRUE;
    }

    ++*pCount;
    for(i=0; i<sizeof(names)/sizeof(names[0]); ++i) {
        if(code==names[i].code) {
            if(nameChoice==U_UNICODE_CHAR_NAME) {
                if(0!=uprv_strcmp(name, names[i].name)) {
                    log_err("u_enumCharName(0x%lx)=%s instead of %s\n", code, name, names[i].name);
                }
            } else {
                if(names[i].oldName[0]==0 || 0!=uprv_strcmp(name, names[i].oldName)) {
                    log_err("u_enumCharName(0x%lx - 1.0)=%s instead of %s\n", code, name, names[i].oldName);
                }
            }
            break;
        }
    }
    return TRUE;
}

static void
TestCharNames() {
    static char name[80];
    UErrorCode errorCode=U_ZERO_ERROR;
    UTextOffset length;
    UChar32 c;
    int i;

    log_verbose("Testing u_charName()\n");
    for(i=0; i<sizeof(names)/sizeof(names[0]); ++i) {
        /* modern Unicode character name */
        length=u_charName(names[i].code, U_UNICODE_CHAR_NAME, name, sizeof(name), &errorCode);
        if(U_FAILURE(errorCode)) {
            log_err("u_charName(0x%lx) error %s\n", names[i].code, u_errorName(errorCode));
            return;
        }
        if(length<=0 || 0!=uprv_strcmp(name, names[i].name) || length!=(uint16_t)uprv_strlen(name)) {
            log_err("u_charName(0x%lx) gets %s length %ld instead of %s\n", names[i].code, name, length, names[i].name);
        }

        /* find the modern name */
        c=u_charFromName(U_UNICODE_CHAR_NAME, names[i].name, &errorCode);
        if(U_FAILURE(errorCode)) {
            log_err("u_charFromName(%s) error %s\n", names[i].name, u_errorName(errorCode));
            return;
        }
        if(c!=names[i].code) {
            log_err("u_charFromName(%s) gets 0x%lx instead of 0x%lx\n", names[i].name, c, names[i].code);
        }

        /* Unicode 1.0 character name */
        length=u_charName(names[i].code, U_UNICODE_10_CHAR_NAME, name, sizeof(name), &errorCode);
        if(U_FAILURE(errorCode)) {
            log_err("u_charName(0x%lx - 1.0) error %s\n", names[i].code, u_errorName(errorCode));
            return;
        }
        if(length<0 || (length>0 && 0!=uprv_strcmp(name, names[i].oldName)) || length!=(uint16_t)uprv_strlen(name)) {
            log_err("u_charName(0x%lx - 1.0) gets %s length %ld instead of nothing or %s\n", names[i].code, name, length, names[i].oldName);
        }

        /* find the Unicode 1.0 name if it is stored (length>0 means that we could read it) */
        if(names[i].oldName[0]!=0 && length>0) {
            c=u_charFromName(U_UNICODE_10_CHAR_NAME, names[i].oldName, &errorCode);
            if(U_FAILURE(errorCode)) {
                log_err("u_charFromName(%s - 1.0) error %s\n", names[i].oldName, u_errorName(errorCode));
                return;
            }
            if(c!=names[i].code) {
                log_err("u_charFromName(%s - 1.0) gets 0x%lx instead of 0x%lx\n", names[i].oldName, c, names[i].code);
            }
        }
    }

    /* test u_enumCharNames() */
    length=0;
    errorCode=U_ZERO_ERROR;
    u_enumCharNames(0, 0x110000, enumCharNamesFn, &length, U_UNICODE_CHAR_NAME, &errorCode);
    if(U_FAILURE(errorCode) || length<49194) {
        log_err("u_enumCharNames(0..0x1100000) error %s names count=%ld\n", u_errorName(errorCode), length);
    }

    /* ### TODO: test error cases and other interesting things */
}

/* test u_isMirrored() and u_charMirror() ----------------------------------- */

static void
TestMirroring() {
    log_verbose("Testing u_isMirrored()\n");
    if(!(u_isMirrored(0x28) && u_isMirrored(0xbb) && u_isMirrored(0x2045) && u_isMirrored(0x232a) &&
         !u_isMirrored(0x27) && !u_isMirrored(0x61) && !u_isMirrored(0x284) && !u_isMirrored(0x3400)
        )
    ) {
        log_err("u_isMirrored() does not work correctly\n");
    }

    log_verbose("Testing u_charMirror()\n");
    if(!(u_charMirror(0x3c)==0x3e && u_charMirror(0x5d)==0x5b && u_charMirror(0x208d)==0x208e && u_charMirror(0x3017)==0x3016 &&
         u_charMirror(0x2e)==0x2e && u_charMirror(0x6f3)==0x6f3 && u_charMirror(0x301c)==0x301c && u_charMirror(0xa4ab)==0xa4ab 
         )
    ) {
        log_err("u_charMirror() does not work correctly\n");
    }
}

/* test u_unescape() and u_unescapeAt() ------------------------------------- */

static void
TestUnescape() {
    static UChar buffer[200];
    static const UChar expect[]={
        0x53, 0x63, 0x68, 0xf6, 0x6e, 0x65, 0x73, 0x20, 0x41, 0x75, 0x74, 0x6f, 0x3a, 0x20,
        0x20ac, 0x20, 0x31, 0x31, 0x32, 0x34, 0x30, 0x2e, 0x0c,
        0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x73, 0x20,
        0x5a, 0x65, 0x69, 0x63, 0x68, 0x65, 0x6e, 0x3a, 0x20, 0xdbc8, 0xdf45, 0x0a, 0
    };
    int32_t length;

    /* test u_unescape() */
    length=u_unescape(
        "Sch\\u00f6nes Auto: \\u20ac 11240.\\fPrivates Zeichen: \\U00102345\\n",
        buffer, sizeof(buffer)/sizeof(buffer[0]));
    if(length!=45 || u_strcmp(buffer, expect)!=0) {
        log_err("failure in u_unescape(): length %d!=45 and/or incorrect result string\n", length);
    }

    /* try preflighting */
    length=u_unescape(
        "Sch\\u00f6nes Auto: \\u20ac 11240.\\fPrivates Zeichen: \\U00102345\\n",
        NULL, sizeof(buffer)/sizeof(buffer[0]));
    if(length!=45 || u_strcmp(buffer, expect)!=0) {
        log_err("failure in u_unescape(preflighting): length %d!=45\n", length);
    }

    /* ### TODO: test u_unescapeAt() */
}

/* test string case mapping functions --------------------------------------- */

static void
TestCaseMapping() {
    static const UChar

    beforeLower[]= { 0x61, 0x42, 0x49,  0x3a3, 0xdf, 0x3a3, 0x2f, 0xd93f, 0xdfff },
    lowerRoot[]=   { 0x61, 0x62, 0x69,  0x3c3, 0xdf, 0x3c2, 0x2f, 0xd93f, 0xdfff },
    lowerTurkish[]={ 0x61, 0x62, 0x131, 0x3c3, 0xdf, 0x3c2, 0x2f, 0xd93f, 0xdfff },

    beforeUpper[]= { 0x61, 0x42, 0x69,  0x3c2, 0xdf,       0x3c3, 0x2f, 0xfb03,           0xd93f, 0xdfff },
    upperRoot[]=   { 0x41, 0x42, 0x49,  0x3a3, 0x53, 0x53, 0x3a3, 0x2f, 0x46, 0x46, 0x49, 0xd93f, 0xdfff },
    upperTurkish[]={ 0x41, 0x42, 0x130, 0x3a3, 0x53, 0x53, 0x3a3, 0x2f, 0x46, 0x46, 0x49, 0xd93f, 0xdfff };

    UChar buffer[32];
    int32_t length;
    UErrorCode errorCode;

    /* lowercase with root locale and separate buffers */
    buffer[0]=0xabcd;
    errorCode=U_ZERO_ERROR;
    length=u_strToLower(buffer, sizeof(buffer)/U_SIZEOF_UCHAR,
                        beforeLower, sizeof(beforeLower)/U_SIZEOF_UCHAR,
                        "",
                        &errorCode);
    if( U_FAILURE(errorCode) ||
        length!=(sizeof(lowerRoot)/U_SIZEOF_UCHAR) ||
        uprv_memcmp(lowerRoot, buffer, length*U_SIZEOF_UCHAR)!=0 ||
        buffer[length]!=0
    ) {
        log_err("error in u_strToLower(root locale)=%ld error=%s string matches: %s\n",
            length,
            u_errorName(errorCode),
            uprv_memcmp(lowerRoot, buffer, length*U_SIZEOF_UCHAR)==0 && buffer[length]==0 ? "yes" : "no");
    }

    /* lowercase with turkish locale and in the same buffer */
    uprv_memcpy(buffer, beforeLower, sizeof(beforeLower));
    buffer[sizeof(beforeLower)/U_SIZEOF_UCHAR]=0;
    errorCode=U_ZERO_ERROR;
    length=u_strToLower(buffer, sizeof(buffer)/U_SIZEOF_UCHAR,
                        buffer, -1, /* implicit srcLength */
                        "tr",
                        &errorCode);
    if( U_FAILURE(errorCode) ||
        length!=(sizeof(lowerTurkish)/U_SIZEOF_UCHAR) ||
        uprv_memcmp(lowerTurkish, buffer, length*U_SIZEOF_UCHAR)!=0 ||
        buffer[length]!=0
    ) {
        log_err("error in u_strToLower(turkish locale)=%ld error=%s string matches: %s\n",
            length,
            u_errorName(errorCode),
            uprv_memcmp(lowerTurkish, buffer, length*U_SIZEOF_UCHAR)==0 && buffer[length]==0 ? "yes" : "no");
    }

    /* uppercase with root locale and in the same buffer */
    uprv_memcpy(buffer, beforeUpper, sizeof(beforeUpper));
    errorCode=U_ZERO_ERROR;
    length=u_strToUpper(buffer, sizeof(buffer)/U_SIZEOF_UCHAR,
                        buffer, sizeof(beforeUpper)/U_SIZEOF_UCHAR,
                        "",
                        &errorCode);
    if( U_FAILURE(errorCode) ||
        length!=(sizeof(upperRoot)/U_SIZEOF_UCHAR) ||
        uprv_memcmp(upperRoot, buffer, length*U_SIZEOF_UCHAR)!=0 ||
        buffer[length]!=0
    ) {
        log_err("error in u_strToUpper(root locale)=%ld error=%s string matches: %s\n",
            length,
            u_errorName(errorCode),
            uprv_memcmp(upperRoot, buffer, length*U_SIZEOF_UCHAR)==0 && buffer[length]==0 ? "yes" : "no");
    }

    /* uppercase with turkish locale and separate buffers */
    buffer[0]=0xabcd;
    errorCode=U_ZERO_ERROR;
    length=u_strToUpper(buffer, sizeof(buffer)/U_SIZEOF_UCHAR,
                        beforeUpper, sizeof(beforeUpper)/U_SIZEOF_UCHAR,
                        "tr",
                        &errorCode);
    if( U_FAILURE(errorCode) ||
        length!=(sizeof(upperTurkish)/U_SIZEOF_UCHAR) ||
        uprv_memcmp(upperTurkish, buffer, length*U_SIZEOF_UCHAR)!=0 ||
        buffer[length]!=0
    ) {
        log_err("error in u_strToUpper(turkish locale)=%ld error=%s string matches: %s\n",
            length,
            u_errorName(errorCode),
            uprv_memcmp(upperTurkish, buffer, length*U_SIZEOF_UCHAR)==0 && buffer[length]==0 ? "yes" : "no");
    }

    /* test preflighting */
    buffer[0]=buffer[2]=0xabcd;
    errorCode=U_ZERO_ERROR;
    length=u_strToLower(buffer, 2, /* set destCapacity=2 */
                        beforeLower, sizeof(beforeLower)/U_SIZEOF_UCHAR,
                        "",
                        &errorCode);
    if( errorCode!=U_BUFFER_OVERFLOW_ERROR ||
        length!=(sizeof(lowerRoot)/U_SIZEOF_UCHAR) ||
        uprv_memcmp(lowerRoot, buffer, 2*U_SIZEOF_UCHAR)!=0 ||
        buffer[2]!=0xabcd
    ) {
        log_err("error in u_strToLower(root locale preflighting)=%ld error=%s string matches: %s\n",
            length,
            u_errorName(errorCode),
            uprv_memcmp(lowerRoot, buffer, 2*U_SIZEOF_UCHAR)==0 && buffer[2]==0xabcd ? "yes" : "no");
    }

    errorCode=U_ZERO_ERROR;
    length=u_strToUpper(NULL, 0,
                        beforeUpper, sizeof(beforeUpper)/U_SIZEOF_UCHAR,
                        "tr",
                        &errorCode);
    if( errorCode!=U_BUFFER_OVERFLOW_ERROR ||
        length!=(sizeof(upperTurkish)/U_SIZEOF_UCHAR)
    ) {
        log_err("error in u_strToUpper(turkish locale pure preflighting)=%ld error=%s\n",
            length,
            u_errorName(errorCode));
    }

    /* test error handling */
    errorCode=U_ZERO_ERROR;
    length=u_strToLower(NULL, sizeof(buffer)/U_SIZEOF_UCHAR,
                        beforeLower, sizeof(beforeLower)/U_SIZEOF_UCHAR,
                        "",
                        &errorCode);
    if(errorCode!=U_ILLEGAL_ARGUMENT_ERROR) {
        log_err("error in u_strToLower(root locale dest=NULL)=%ld error=%s\n",
            length,
            u_errorName(errorCode));
    }

    buffer[0]=0xabcd;
    errorCode=U_ZERO_ERROR;
    length=u_strToLower(buffer, -1,
                        beforeLower, sizeof(beforeLower)/U_SIZEOF_UCHAR,
                        "",
                        &errorCode);
    if( errorCode!=U_ILLEGAL_ARGUMENT_ERROR ||
        buffer[0]!=0xabcd
    ) {
        log_err("error in u_strToLower(root locale destCapacity=-1)=%ld error=%s buffer[0]==0x%lx\n",
            length,
            u_errorName(errorCode),
            buffer[0]);
    }

    buffer[0]=0xabcd;
    errorCode=U_ZERO_ERROR;
    length=u_strToUpper(buffer, sizeof(buffer)/U_SIZEOF_UCHAR,
                        NULL, sizeof(beforeUpper)/U_SIZEOF_UCHAR,
                        "tr",
                        &errorCode);
    if( errorCode!=U_ILLEGAL_ARGUMENT_ERROR ||
        buffer[0]!=0xabcd
    ) {
        log_err("error in u_strToUpper(turkish locale src=NULL)=%ld error=%s buffer[0]==0x%lx\n",
            length,
            u_errorName(errorCode),
            buffer[0]);
    }

    buffer[0]=0xabcd;
    errorCode=U_ZERO_ERROR;
    length=u_strToUpper(buffer, sizeof(buffer)/U_SIZEOF_UCHAR,
                        beforeUpper, -2,
                        "tr",
                        &errorCode);
    if( errorCode!=U_ILLEGAL_ARGUMENT_ERROR ||
        buffer[0]!=0xabcd
    ) {
        log_err("error in u_strToUpper(turkish locale srcLength=-2)=%ld error=%s buffer[0]==0x%lx\n",
            length,
            u_errorName(errorCode),
            buffer[0]);
    }
}