// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/********************************************************************
 * COPYRIGHT: 
 * Copyright (c) 2005-2013, International Business Machines Corporation and
 * others. All Rights Reserved.
 ********************************************************************/
/*
* File utexttst.c
*
* Modification History:
*
*   Date          Name               Description
*   06/13/2005    Andy Heninger      Creation 
*******************************************************************************
*/

#include "unicode/utypes.h"
#include "unicode/utext.h"
#include "unicode/ustring.h"
#include "cintltst.h"
#include "memory.h"
#include "string.h"


static void TestAPI(void);
void addUTextTest(TestNode** root);


void
addUTextTest(TestNode** root)
{
  addTest(root, &TestAPI           ,    "tsutil/UTextTest/TestAPI");
}


#define TEST_ASSERT(x) UPRV_BLOCK_MACRO_BEGIN { \
    if ((x)==FALSE) { \
        log_err("Test failure in file %s at line %d\n", __FILE__, __LINE__); \
        gFailed = TRUE; \
    } \
} UPRV_BLOCK_MACRO_END


#define TEST_SUCCESS(status) UPRV_BLOCK_MACRO_BEGIN { \
    if (U_FAILURE(status)) { \
        log_err("Test failure in file %s at line %d. Error = \"%s\"\n", \
                __FILE__, __LINE__, u_errorName(status)); \
        gFailed = TRUE; \
   } \
} UPRV_BLOCK_MACRO_END


/*
 *  TestAPI   verify that the UText API is accessible from C programs.
 *            This is not intended to be a complete test of the API functionality.  That is
 *            in the C++ intltest program.
 *            This test is intended to check that everything can be accessed and built in 
 *            a pure C enviornment.
 */


static void TestAPI(void) {
    UErrorCode      status = U_ZERO_ERROR;
    UBool           gFailed = FALSE;
    (void)gFailed;   /* Suppress set but not used warning. */

    /* Open    */
    {
        UText           utLoc = UTEXT_INITIALIZER;
        const char *    cString = "\x61\x62\x63\x64";
        UChar           uString[]  = {0x41, 0x42, 0x43, 0};
        UText          *uta;
        UText          *utb;
        UChar           c;

        uta = utext_openUChars(NULL, uString, -1, &status);
        TEST_SUCCESS(status);
        c = utext_next32(uta);
        TEST_ASSERT(c == 0x41);
        utb = utext_close(uta); 
        TEST_ASSERT(utb == NULL);

        uta = utext_openUTF8(&utLoc, cString, -1, &status);
        TEST_SUCCESS(status);
        TEST_ASSERT(uta == &utLoc);

        uta = utext_close(&utLoc);
        TEST_ASSERT(uta == &utLoc);
    }

    /* utext_clone()  */
    {
        UChar   uString[]  = {0x41, 0x42, 0x43, 0};
        int64_t len;
        UText   *uta;
        UText   *utb;

        status = U_ZERO_ERROR;
        uta = utext_openUChars(NULL, uString, -1, &status);
        TEST_SUCCESS(status);
        utb = utext_clone(NULL, uta, FALSE, FALSE, &status);
        TEST_SUCCESS(status);
        TEST_ASSERT(utb != NULL);
        TEST_ASSERT(utb != uta);
        len = utext_nativeLength(uta);
        TEST_ASSERT(len == u_strlen(uString));
        utext_close(uta);
        utext_close(utb);
    }

    /* basic access functions  */
    {
        UChar     uString[]  = {0x41, 0x42, 0x43, 0};
        UText     *uta;
        UChar32   c;
        int64_t   len;
        UBool     b;
        int64_t   i;

        status = U_ZERO_ERROR;
        uta = utext_openUChars(NULL, uString, -1, &status);
        TEST_ASSERT(uta!=NULL);
        TEST_SUCCESS(status);
        b = utext_isLengthExpensive(uta);
        TEST_ASSERT(b==TRUE);
        len = utext_nativeLength(uta);
        TEST_ASSERT(len == u_strlen(uString));
        b = utext_isLengthExpensive(uta);
        TEST_ASSERT(b==FALSE);

        c = utext_char32At(uta, 0);
        TEST_ASSERT(c==uString[0]);
        
        c = utext_current32(uta);
        TEST_ASSERT(c==uString[0]);

        c = utext_next32(uta);
        TEST_ASSERT(c==uString[0]);
        c = utext_current32(uta);
        TEST_ASSERT(c==uString[1]);

        c = utext_previous32(uta);
        TEST_ASSERT(c==uString[0]);
        c = utext_current32(uta);
        TEST_ASSERT(c==uString[0]);

        c = utext_next32From(uta, 1);
        TEST_ASSERT(c==uString[1]);
        c = utext_next32From(uta, u_strlen(uString));
        TEST_ASSERT(c==U_SENTINEL);

        c = utext_previous32From(uta, 2);
        TEST_ASSERT(c==uString[1]);
        i = utext_getNativeIndex(uta);
        TEST_ASSERT(i == 1);

        utext_setNativeIndex(uta, 0);
        b = utext_moveIndex32(uta, 1);
        TEST_ASSERT(b==TRUE);
        i = utext_getNativeIndex(uta);
        TEST_ASSERT(i==1);

        b = utext_moveIndex32(uta, u_strlen(uString)-1);
        TEST_ASSERT(b==TRUE);
        i = utext_getNativeIndex(uta);
        TEST_ASSERT(i==u_strlen(uString));

        b = utext_moveIndex32(uta, 1);
        TEST_ASSERT(b==FALSE);
        i = utext_getNativeIndex(uta);
        TEST_ASSERT(i==u_strlen(uString));

        utext_setNativeIndex(uta, 0);
        c = UTEXT_NEXT32(uta);
        TEST_ASSERT(c==uString[0]);
        c = utext_current32(uta);
        TEST_ASSERT(c==uString[1]);

        c = UTEXT_PREVIOUS32(uta);
        TEST_ASSERT(c==uString[0]);
        c = UTEXT_PREVIOUS32(uta);
        TEST_ASSERT(c==U_SENTINEL);


        utext_close(uta);
    }

    {
        /*
         * UText opened on a NULL string with zero length
         */
        UText    *uta;
        UChar32   c;

        status = U_ZERO_ERROR;
        uta = utext_openUChars(NULL, NULL, 0, &status);
        TEST_SUCCESS(status);
        c = UTEXT_NEXT32(uta);
        TEST_ASSERT(c == U_SENTINEL);
        utext_close(uta);

        uta = utext_openUTF8(NULL, NULL, 0, &status);
        TEST_SUCCESS(status);
        c = UTEXT_NEXT32(uta);
        TEST_ASSERT(c == U_SENTINEL);
        utext_close(uta);
    }


    {
        /*
         * extract
         */
        UText     *uta;
        UChar     uString[]  = {0x41, 0x42, 0x43, 0};
        UChar     buf[100];
        int32_t   i;
        /* Test pinning of input bounds */
        UChar     uString2[]  = {0x41, 0x42, 0x43, 0x44, 0x45,
                                 0x46, 0x47, 0x48, 0x49, 0x4A, 0};
        UChar *   uString2Ptr = uString2 + 5;

        status = U_ZERO_ERROR;
        uta = utext_openUChars(NULL, uString, -1, &status);
        TEST_SUCCESS(status);

        status = U_ZERO_ERROR;
        i = utext_extract(uta, 0, 100, NULL, 0, &status);
        TEST_ASSERT(status==U_BUFFER_OVERFLOW_ERROR);
        TEST_ASSERT(i == u_strlen(uString));

        status = U_ZERO_ERROR;
        memset(buf, 0, sizeof(buf));
        i = utext_extract(uta, 0, 100, buf, 100, &status);
        TEST_SUCCESS(status);
        TEST_ASSERT(i == u_strlen(uString));
        i = u_strcmp(uString, buf);
        TEST_ASSERT(i == 0);
        utext_close(uta);

        /* Test pinning of input bounds */
        status = U_ZERO_ERROR;
        uta = utext_openUChars(NULL, uString2Ptr, -1, &status);
        TEST_SUCCESS(status);

        status = U_ZERO_ERROR;
        memset(buf, 0, sizeof(buf));
        i = utext_extract(uta, -3, 20, buf, 100, &status);
        TEST_SUCCESS(status);
        TEST_ASSERT(i == u_strlen(uString2Ptr));
        i = u_strcmp(uString2Ptr, buf);
        TEST_ASSERT(i == 0);
        utext_close(uta);
    }

    {
        /*
         *  Copy, Replace, isWritable
         *    Can't create an editable UText from plain C, so all we
         *    can easily do is check that errors returned.
         */
        UText     *uta;
        UChar     uString[]  = {0x41, 0x42, 0x43, 0};
        UBool     b;

        status = U_ZERO_ERROR;
        uta = utext_openUChars(NULL, uString, -1, &status);
        TEST_SUCCESS(status);

        b = utext_isWritable(uta);
        TEST_ASSERT(b == FALSE);

        b = utext_hasMetaData(uta);
        TEST_ASSERT(b == FALSE);

        utext_replace(uta,
                      0, 1,     /* start, limit */
                      uString, -1,  /* replacement, replacement length */
                      &status);
        TEST_ASSERT(status == U_NO_WRITE_PERMISSION);


        utext_copy(uta,
                   0, 1,         /* start, limit      */
                   2,            /* destination index */
                   FALSE,        /* move flag         */
                   &status);
        TEST_ASSERT(status == U_NO_WRITE_PERMISSION);

        utext_close(uta);
    }


}