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strcase.cpp

/*
*******************************************************************************
*
*   Copyright (C) 2002, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  strcase.cpp
*   encoding:   US-ASCII
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2002mar12
*   created by: Markus W. Scherer
*
*   Test file for string casing C++ API functions.
*/

#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "unicode/unistr.h"
#include "unicode/ures.h"
#include "unicode/uloc.h"
#include "unicode/locid.h"
#include "unicode/ubrk.h"
#include "ustrtest.h"

void
StringCaseTest::runIndexedTest(int32_t index, UBool exec, const char *&name, char * /*par*/) {
    if (exec) logln("TestSuite StringCaseTest: ");
    switch (index) {
        case 0: name = "TestCaseConversion"; if (exec) TestCaseConversion(); break;
        case 1: name = "TestTitleCasing"; if(exec) TestTitleCasing(); break;

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

void
StringCaseTest::TestCaseConversion()
{
    UChar uppercaseGreek[] =
        { 0x399, 0x395, 0x3a3, 0x3a5, 0x3a3, 0x20, 0x03a7, 0x3a1, 0x399, 0x3a3, 0x3a4,
        0x39f, 0x3a3, 0 };
        // "IESUS CHRISTOS"

    UChar lowercaseGreek[] = 
        { 0x3b9, 0x3b5, 0x3c3, 0x3c5, 0x3c2, 0x20, 0x03c7, 0x3c1, 0x3b9, 0x3c3, 0x3c4,
        0x3bf, 0x3c2, 0 };
        // "iesus christos"

    UChar lowercaseTurkish[] = 
        { 0x69, 0x73, 0x74, 0x61, 0x6e, 0x62, 0x75, 0x6c, 0x2c, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x63, 0x6f, 
        0x6e, 0x73, 0x74, 0x61, 0x6e, 0x74, 0x0131, 0x6e, 0x6f, 0x70, 0x6c, 0x65, 0x21, 0 };

    UChar uppercaseTurkish[] = 
        { 0x54, 0x4f, 0x50, 0x4b, 0x41, 0x50, 0x49, 0x20, 0x50, 0x41, 0x4c, 0x41, 0x43, 0x45, 0x2c, 0x20,
        0x0130, 0x53, 0x54, 0x41, 0x4e, 0x42, 0x55, 0x4c, 0 };
    
    UnicodeString expectedResult;
    UnicodeString   test3;

    test3 += (UChar32)0x0130;
    test3 += "STANBUL, NOT CONSTANTINOPLE!";

    UnicodeString   test4(test3);
    test4.toLower();
    expectedResult = "istanbul, not constantinople!";
    if (test4 != expectedResult)
        errln("1. toLower failed: expected \"" + expectedResult + "\", got \"" + test4 + "\".");

    test4 = test3;
    test4.toLower(Locale("tr", "TR"));
    expectedResult = lowercaseTurkish;
    if (test4 != expectedResult)
        errln("2. toLower failed: expected \"" + expectedResult + "\", got \"" + test4 + "\".");

    test3 = "topkap";
    test3 += (UChar32)0x0131;
    test3 += " palace, istanbul";
    test4 = test3;

    test4.toUpper();
    expectedResult = "TOPKAPI PALACE, ISTANBUL";
    if (test4 != expectedResult)
        errln("toUpper failed: expected \"" + expectedResult + "\", got \"" + test4 + "\".");

    test4 = test3;
    test4.toUpper(Locale("tr", "TR"));
    expectedResult = uppercaseTurkish;
    if (test4 != expectedResult)
        errln("toUpper failed: expected \"" + expectedResult + "\", got \"" + test4 + "\".");

    test3 = CharsToUnicodeString("S\\u00FC\\u00DFmayrstra\\u00DFe");

    test3.toUpper(Locale("de", "DE"));
    expectedResult = CharsToUnicodeString("S\\u00DCSSMAYRSTRASSE");
    if (test3 != expectedResult)
        errln("toUpper failed: expected \"" + expectedResult + "\", got \"" + test3 + "\".");
    
    test4.replace(0, test4.length(), uppercaseGreek);

    test4.toLower(Locale("el", "GR"));
    expectedResult = lowercaseGreek;
    if (test4 != expectedResult)
        errln("toLower failed: expected \"" + expectedResult + "\", got \"" + test4 + "\".");
    
    test4.replace(0, test4.length(), lowercaseGreek);

    test4.toUpper();
    expectedResult = uppercaseGreek;
    if (test4 != expectedResult)
        errln("toUpper failed: expected \"" + expectedResult + "\", got \"" + test4 + "\".");

    // more string case mapping tests with the new implementation
    {
        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,           0xfb03,           0xfb03,           0xd93f, 0xdfff },
        upperRoot[]=   { 0x41, 0x42, 0x49,  0x3a3, 0x53, 0x53, 0x3a3, 0x2f, 0x46, 0x46, 0x49, 0x46, 0x46, 0x49, 0x46, 0x46, 0x49, 0xd93f, 0xdfff },
        upperTurkish[]={ 0x41, 0x42, 0x130, 0x3a3, 0x53, 0x53, 0x3a3, 0x2f, 0x46, 0x46, 0x49, 0x46, 0x46, 0x49, 0x46, 0x46, 0x49, 0xd93f, 0xdfff },

        beforeMiniUpper[]=  { 0xdf, 0x61 },
        miniUpper[]=        { 0x53, 0x53, 0x41 };

        UnicodeString s;

        /* lowercase with root locale */
        s=UnicodeString(FALSE, beforeLower, (int32_t)(sizeof(beforeLower)/U_SIZEOF_UCHAR));
        s.toLower("");
        if( s.length()!=(sizeof(lowerRoot)/U_SIZEOF_UCHAR) ||
            s!=UnicodeString(FALSE, lowerRoot, s.length())
        ) {
            errln("error in toLower(root locale)=\"" + s + "\" expected \"" + UnicodeString(FALSE, lowerRoot, (int32_t)(sizeof(lowerRoot)/U_SIZEOF_UCHAR)) + "\"");
        }

        /* lowercase with turkish locale */
        s=UnicodeString(FALSE, beforeLower, (int32_t)(sizeof(beforeLower)/U_SIZEOF_UCHAR));
        s.setCharAt(0, beforeLower[0]).toLower(Locale("tr"));
        if( s.length()!=(sizeof(lowerTurkish)/U_SIZEOF_UCHAR) ||
            s!=UnicodeString(FALSE, lowerTurkish, s.length())
        ) {
            errln("error in toLower(turkish locale)=\"" + s + "\" expected \"" + UnicodeString(FALSE, lowerTurkish, (int32_t)(sizeof(lowerTurkish)/U_SIZEOF_UCHAR)) + "\"");
        }

        /* uppercase with root locale */
        s=UnicodeString(FALSE, beforeUpper, (int32_t)(sizeof(beforeUpper)/U_SIZEOF_UCHAR));
        s.setCharAt(0, beforeUpper[0]).toUpper();
        if( s.length()!=(sizeof(upperRoot)/U_SIZEOF_UCHAR) ||
            s!=UnicodeString(FALSE, upperRoot, s.length())
        ) {
            errln("error in toUpper(root locale)=\"" + s + "\" expected \"" + UnicodeString(FALSE, upperRoot, (int32_t)(sizeof(upperRoot)/U_SIZEOF_UCHAR)) + "\"");
        }

        /* uppercase with turkish locale */
        s=UnicodeString(FALSE, beforeUpper, (int32_t)(sizeof(beforeUpper)/U_SIZEOF_UCHAR));
        s.toUpper(Locale("tr"));
        if( s.length()!=(sizeof(upperTurkish)/U_SIZEOF_UCHAR) ||
            s!=UnicodeString(FALSE, upperTurkish, s.length())
        ) {
            errln("error in toUpper(turkish locale)=\"" + s + "\" expected \"" + UnicodeString(FALSE, upperTurkish, (int32_t)(sizeof(upperTurkish)/U_SIZEOF_UCHAR)) + "\"");
        }

        /* uppercase a short string with root locale */
        s=UnicodeString(FALSE, beforeMiniUpper, (int32_t)(sizeof(beforeMiniUpper)/U_SIZEOF_UCHAR));
        s.setCharAt(0, beforeMiniUpper[0]).toUpper("");
        if( s.length()!=(sizeof(miniUpper)/U_SIZEOF_UCHAR) ||
            s!=UnicodeString(FALSE, miniUpper, s.length())
        ) {
            errln("error in toUpper(root locale)=\"" + s + "\" expected \"" + UnicodeString(FALSE, miniUpper, (int32_t)(sizeof(miniUpper)/U_SIZEOF_UCHAR)) + "\"");
        }
    }

    // test some supplementary characters (>= Unicode 3.1)
    {
        UnicodeString t;

        UnicodeString
            deseretInput=UnicodeString("\\U0001043C\\U00010414", "").unescape(),
            deseretLower=UnicodeString("\\U0001043C\\U0001043C", "").unescape(),
            deseretUpper=UnicodeString("\\U00010414\\U00010414", "").unescape();
        (t=deseretInput).toLower();
        if(t!=deseretLower) {
            errln("error lowercasing Deseret (plane 1) characters");
        }
        (t=deseretInput).toUpper();
        if(t!=deseretUpper) {
            errln("error uppercasing Deseret (plane 1) characters");
        }
    }

    // test some more cases that looked like problems
    {
        UnicodeString t;

        UnicodeString
            ljInput=UnicodeString("ab'cD \\uFB00i\\u0131I\\u0130 \\u01C7\\u01C8\\u01C9 \\U0001043C\\U00010414", "").unescape(),
            ljLower=UnicodeString("ab'cd \\uFB00i\\u0131ii \\u01C9\\u01C9\\u01C9 \\U0001043C\\U0001043C", "").unescape(),
            ljUpper=UnicodeString("AB'CD FFIII\\u0130 \\u01C7\\u01C7\\u01C7 \\U00010414\\U00010414", "").unescape();
        (t=ljInput).toLower("en");
        if(t!=ljLower) {
            errln("error lowercasing LJ characters");
        }
        (t=ljInput).toUpper("en");
        if(t!=ljUpper) {
            errln("error uppercasing LJ characters");
        }
    }

    // Unicode 3.1.1 SpecialCasing tests
    {
        UnicodeString t;

        // sigmas preceded and/or followed by cased letters
        UnicodeString
            sigmas=UnicodeString("i\\u0307\\u03a3\\u0308j \\u0307\\u03a3\\u0308j i\\u00ad\\u03a3\\u0308 \\u0307\\u03a3\\u0308 ", "").unescape(),
            sigmasLower=UnicodeString("i\\u0307\\u03c3\\u0308j \\u0307\\u03c3\\u0308j i\\u00ad\\u03c2\\u0308 \\u0307\\u03c3\\u0308 ", "").unescape(),
            sigmasUpper=UnicodeString("I\\u0307\\u03a3\\u0308J \\u0307\\u03a3\\u0308J I\\u00ad\\u03a3\\u0308 \\u0307\\u03a3\\u0308 ", "").unescape();

        (t=sigmas).toLower();
        if(t!=sigmasLower) {
            errln("error in sigmas.toLower()=\"" + t + "\" expected \"" + sigmasLower + "\"");
        }

        (t=sigmas).toUpper();
        if(t!=sigmasUpper) {
            errln("error in sigmas.toUpper()=\"" + t + "\" expected \"" + sigmasUpper + "\"");
        }

        // turkish & azerbaijani dotless i & dotted I
        // remove dot above if there was a capital I before and there are no more accents above
        UnicodeString
            dots=UnicodeString("I \\u0130 I\\u0307 I\\u0327\\u0307 I\\u0301\\u0307 I\\u0327\\u0307\\u0301", "").unescape(),
            dotsTurkish=UnicodeString("\\u0131 i i i\\u0327 \\u0131\\u0301\\u0307 i\\u0327\\u0307\\u0301", "").unescape(),
            dotsDefault=UnicodeString("i i i i\\u0327 i\\u0301\\u0307 i\\u0327\\u0307\\u0301", "").unescape();

        (t=dots).toLower("tr");
        if(t!=dotsTurkish) {
            errln("error in dots.toLower(tr)=\"" + t + "\" expected \"" + dotsTurkish + "\"");
        }

        (t=dots).toLower("de");
        if(t!=dotsDefault) {
            errln("error in dots.toLower(de)=\"" + t + "\" expected \"" + dotsDefault + "\"");
        }
    }

    // more Unicode 3.1.1 tests
    {
        UnicodeString t;

        // lithuanian dot above in uppercasing
        UnicodeString
            dots=UnicodeString("a\\u0307 \\u0307 i\\u0307 j\\u0327\\u0307 j\\u0301\\u0307", "").unescape(),
            dotsLithuanian=UnicodeString("A\\u0307 \\u0307 I J\\u0327 J\\u0301\\u0307", "").unescape(),
            dotsDefault=UnicodeString("A\\u0307 \\u0307 I\\u0307 J\\u0327\\u0307 J\\u0301\\u0307", "").unescape();

        (t=dots).toUpper("lt");
        if(t!=dotsLithuanian) {
            errln("error in dots.toUpper(lt)=\"" + t + "\" expected \"" + dotsLithuanian + "\"");
        }

        (t=dots).toUpper("de");
        if(t!=dotsDefault) {
            errln("error in dots.toUpper(de)=\"" + t + "\" expected \"" + dotsDefault + "\"");
        }

        // lithuanian adds dot above to i in lowercasing if there are more above accents
        UnicodeString
            i=UnicodeString("I I\\u0301 J J\\u0301 \\u012e \\u012e\\u0301 \\u00cc\\u00cd\\u0128", "").unescape(),
            iLithuanian=UnicodeString("i i\\u0307\\u0301 j j\\u0307\\u0301 \\u012f \\u012f\\u0307\\u0301 i\\u0307\\u0300i\\u0307\\u0301i\\u0307\\u0303", "").unescape(),
            iDefault=UnicodeString("i i\\u0301 j j\\u0301 \\u012f \\u012f\\u0301 \\u00ec\\u00ed\\u0129", "").unescape();

        (t=i).toLower("lt");
        if(t!=iLithuanian) {
            errln("error in i.toLower(lt)=\"" + t + "\" expected \"" + iLithuanian + "\"");
        }

        (t=i).toLower("de");
        if(t!=iDefault) {
            errln("error in i.toLower(de)=\"" + t + "\" expected \"" + iDefault + "\"");
        }
    }

    // test case folding
    {
        UnicodeString
            s=UNICODE_STRING("A\\u00df\\u00b5\\ufb03\\U0001040c\\u0131", 35).unescape(),
            f=UNICODE_STRING("ass\\u03bcffi\\U00010434i", 23).unescape(),
            t;

        (t=s).foldCase();
        if(f!=t) {
            errln("error in foldCase(\"" + s + "\", default)=\"" + t + "\" but expected \"" + f + "\"");
        }

        // alternate handling for dotted I/dotless i (U+0130, U+0131)
        f.setCharAt(f.length()-1, 0x131);
        (t=s).foldCase(U_FOLD_CASE_EXCLUDE_SPECIAL_I);
        if(f!=t) {
            errln("error in foldCase(\"" + s + "\", U_FOLD_CASE_EXCLUDE_SPECIAL_I)=\"" + t + "\" but expected \"" + f + "\"");
        }
    }
}

void
StringCaseTest::TestTitleCasing() {
    char cLocaleID[100];
    UnicodeString in, expect, result, localeID;
    UResourceBundle *casing, *titlecasing, *test, *res;
    UErrorCode errorCode;
    int32_t testIndex, type;

    errorCode=U_ZERO_ERROR;
    loadTestData(errorCode);
    casing=ures_openDirect("testdata", "casing", &errorCode);
    if(U_FAILURE(errorCode)) {
        errln("error: TestTitleCasing() is unable to open casing.res: %s", u_errorName(errorCode));
        return;
    }

    // titlecasing tests
    titlecasing=ures_getByKey(casing, "titlecasing", 0, &errorCode);
    if(U_FAILURE(errorCode)) {
        logln("TestTitleCasing() is unable to open get casing.res/titlecasing: %s", u_errorName(errorCode));
    } else {
        UBreakIterator *iter;

        for(testIndex=0;; ++testIndex) {
            // get test case
            test=ures_getByIndex(titlecasing, testIndex, 0, &errorCode);
            if(U_FAILURE(errorCode)) {
                break; // done
            }

            // get test case data
            in=ures_getUnicodeStringByIndex(test, 0, &errorCode);
            expect=ures_getUnicodeStringByIndex(test, 1, &errorCode);
            localeID=ures_getUnicodeStringByIndex(test, 2, &errorCode);

            res=ures_getByIndex(test, 3, 0, &errorCode);
            type=ures_getInt(res, &errorCode);
            ures_close(res);

            if(U_FAILURE(errorCode)) {
                errln("error: TestTitleCasing() is unable to get data for test case %ld from casing.res: %s", testIndex, u_errorName(errorCode));
                continue; // skip this test case
            }

            // run this test case
            localeID.extract(0, 0x7fffffff, cLocaleID, sizeof(cLocaleID), "");
            if(type<0) {
                iter=0;
            } else {
                iter=ubrk_open((UBreakIteratorType)type, cLocaleID, in.getBuffer(), in.length(), &errorCode);
            }

            if(U_FAILURE(errorCode)) {
                errln("error: TestTitleCasing() ubrk_open(%d) failed for test case %d from casing.res: %s", type, testIndex, u_errorName(errorCode));
            } else {
                result=in;
                result.toTitle((BreakIterator *)iter, Locale(cLocaleID));
                if(result!=expect) {
                    errln("error: TestTitleCasing() got a wrong result for test case %ld from casing.res", testIndex);
                }
            }

            // clean up
            ubrk_close(iter);
            ures_close(test);
        }
        ures_close(titlecasing);
        logln("TestTitleCasing() processed %ld test cases", testIndex);
    }

    ures_close(casing);
}

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