Check in the pristine copy of ICU 4.6...

icu46/source/test/cintltst/utf8tst.c

+/********************************************************************
+ * COPYRIGHT: 
+ * Copyright (c) 1998-2006, International Business Machines Corporation and
+ * others. All Rights Reserved.
+ ********************************************************************/
+/*
+* File test.c
+*
+* Modification History:
+*
+*   Date          Name        Description
+*   07/24/2000    Madhu       Creation 
+*******************************************************************************
+*/
+
+#include "unicode/utypes.h"
+#include "unicode/utf8.h"
+#include "cmemory.h"
+#include "cintltst.h"
+
+#define LENGTHOF(array) (sizeof(array)/sizeof((array)[0]))
+
+/* lenient UTF-8 ------------------------------------------------------------ */
+
+/*
+ * Lenient UTF-8 differs from conformant UTF-8 in that it allows surrogate
+ * code points with their "natural" encoding.
+ * Effectively, this allows a mix of UTF-8 and CESU-8 as well as encodings of
+ * single surrogates.
+ *
+ * This is not conformant with UTF-8.
+ *
+ * Supplementary code points may be encoded as pairs of 3-byte sequences, but
+ * the macros below do not attempt to assemble such pairs.
+ */
+
+#define L8_NEXT(s, i, length, c) { \
+    (c)=(uint8_t)(s)[(i)++]; \
+    if((c)>=0x80) { \
+        if(U8_IS_LEAD(c)) { \
+            (c)=utf8_nextCharSafeBody((const uint8_t *)s, &(i), (int32_t)(length), c, -2); \
+        } else { \
+            (c)=U_SENTINEL; \
+        } \
+    } \
+}
+
+#define L8_PREV(s, start, i, c) { \
+    (c)=(uint8_t)(s)[--(i)]; \
+    if((c)>=0x80) { \
+        if((c)<=0xbf) { \
+            (c)=utf8_prevCharSafeBody((const uint8_t *)s, start, &(i), c, -2); \
+        } else { \
+            (c)=U_SENTINEL; \
+        } \
+    } \
+}
+
+/* -------------------------------------------------------------------------- */
+
+static void printUChars(const uint8_t *uchars, int16_t len);
+
+static void TestCodeUnitValues(void);
+static void TestCharLength(void);
+static void TestGetChar(void);
+static void TestNextPrevChar(void);
+static void TestFwdBack(void);
+static void TestSetChar(void);
+static void TestAppendChar(void);
+static void TestAppend(void);
+static void TestSurrogates(void);
+
+void addUTF8Test(TestNode** root);
+
+void
+addUTF8Test(TestNode** root)
+{
+  addTest(root, &TestCodeUnitValues,    "utf8tst/TestCodeUnitValues");
+  addTest(root, &TestCharLength,        "utf8tst/TestCharLength"    );
+  addTest(root, &TestGetChar,           "utf8tst/TestGetChar"       );
+  addTest(root, &TestNextPrevChar,      "utf8tst/TestNextPrevChar"  );
+  addTest(root, &TestFwdBack,           "utf8tst/TestFwdBack"       );
+  addTest(root, &TestSetChar,           "utf8tst/TestSetChar"       );
+  addTest(root, &TestAppendChar,        "utf8tst/TestAppendChar"    );
+  addTest(root, &TestAppend,            "utf8tst/TestAppend"        );
+  addTest(root, &TestSurrogates,        "utf8tst/TestSurrogates"    );
+}
+
+static void TestCodeUnitValues()
+{
+    static const uint8_t codeunit[]={0x00, 0x65, 0x7e, 0x7f, 0xc0, 0xc4, 0xf0, 0xfd, 0x80, 0x81, 0xbc, 0xbe,};
+    
+    int16_t i;
+    for(i=0; i<sizeof(codeunit)/sizeof(codeunit[0]); i++){
+        uint8_t c=codeunit[i];
+        log_verbose("Testing code unit value of %x\n", c);
+        if(i<4){
+            if(!UTF8_IS_SINGLE(c) || UTF8_IS_LEAD(c) || UTF8_IS_TRAIL(c) || !U8_IS_SINGLE(c) || U8_IS_LEAD(c) || U8_IS_TRAIL(c)){
+                log_err("ERROR: 0x%02x is a single byte but results in single: %c lead: %c trail: %c\n",
+                    c, UTF8_IS_SINGLE(c) ? 'y' : 'n', UTF8_IS_LEAD(c) ? 'y' : 'n', UTF8_IS_TRAIL(c) ? 'y' : 'n');
+            }
+        } else if(i< 8){
+            if(!UTF8_IS_LEAD(c) || UTF8_IS_SINGLE(c) || UTF8_IS_TRAIL(c) || !U8_IS_LEAD(c) || U8_IS_SINGLE(c) || U8_IS_TRAIL(c)){
+                log_err("ERROR: 0x%02x is a lead byte but results in single: %c lead: %c trail: %c\n",
+                    c, UTF8_IS_SINGLE(c) ? 'y' : 'n', UTF8_IS_LEAD(c) ? 'y' : 'n', UTF8_IS_TRAIL(c) ? 'y' : 'n');
+            }
+        } else if(i< 12){
+            if(!UTF8_IS_TRAIL(c) || UTF8_IS_SINGLE(c) || UTF8_IS_LEAD(c) || !U8_IS_TRAIL(c) || U8_IS_SINGLE(c) || U8_IS_LEAD(c)){
+                log_err("ERROR: 0x%02x is a trail byte but results in single: %c lead: %c trail: %c\n",
+                    c, UTF8_IS_SINGLE(c) ? 'y' : 'n', UTF8_IS_LEAD(c) ? 'y' : 'n', UTF8_IS_TRAIL(c) ? 'y' : 'n');
+            }
+        }
+    }
+}
+
+static void TestCharLength()
+{
+    static const uint32_t codepoint[]={
+        1, 0x0061,
+        1, 0x007f,
+        2, 0x016f,
+        2, 0x07ff,
+        3, 0x0865,
+        3, 0x20ac,
+        4, 0x20402,
+        4, 0x23456,
+        4, 0x24506,
+        4, 0x20402,
+        4, 0x10402,
+        3, 0xd7ff,
+        3, 0xe000,
+        
+    };
+    
+    int16_t i;
+    UBool multiple;
+    for(i=0; i<sizeof(codepoint)/sizeof(codepoint[0]); i=(int16_t)(i+2)){
+        UChar32 c=codepoint[i+1];
+        if(UTF8_CHAR_LENGTH(c) != (uint16_t)codepoint[i] || U8_LENGTH(c) != (uint16_t)codepoint[i]){
+              log_err("The no: of code units for %lx:- Expected: %d Got: %d\n", c, codepoint[i], UTF8_CHAR_LENGTH(c));
+        }else{
+              log_verbose("The no: of code units for %lx is %d\n",c, UTF8_CHAR_LENGTH(c) ); 
+        }
+        multiple=(UBool)(codepoint[i] == 1 ? FALSE : TRUE);
+        if(UTF8_NEED_MULTIPLE_UCHAR(c) != multiple){
+              log_err("ERROR: UTF8_NEED_MULTIPLE_UCHAR failed for %lx\n", c);
+        }
+    }
+}
+
+static void TestGetChar()
+{
+    static const uint8_t input[]={
+    /*  code unit,*/
+        0x61,
+        0x7f,
+        0xe4,
+        0xba, 
+        0x8c,
+        0xF0, 
+        0x90, 
+        0x90, 
+        0x81,
+        0xc0,
+        0x65,
+        0x31,
+        0x9a,
+        0xc9
+    };
+    static const UChar32 result[]={
+     /*codepoint-unsafe,  codepoint-safe(not strict)  codepoint-safe(strict)*/
+        0x61,             0x61,                       0x61, 
+        0x7f,             0x7f,                       0x7f, 
+        0x4e8c,           0x4e8c,                     0x4e8c,
+        0x4e8c,           0x4e8c,                     0x4e8c ,
+        0x4e8c,           0x4e8c,                     0x4e8c,
+        0x10401,          0x10401,                    0x10401 ,
+        0x10401,          0x10401,                    0x10401 ,
+        0x10401,          0x10401,                    0x10401 ,
+        0x10401,          0x10401,                    0x10401,
+        0x25,             UTF8_ERROR_VALUE_1,         UTF8_ERROR_VALUE_1,
+        0x65,             0x65,                       0x65,  
+        0x31,             0x31,                       0x31,  
+        0x31,             UTF8_ERROR_VALUE_1,         UTF8_ERROR_VALUE_1,
+        0x240,            UTF8_ERROR_VALUE_1,         UTF8_ERROR_VALUE_1
+    };
+    uint16_t i=0;
+    UChar32 c;
+    uint32_t offset=0;
+
+    for(offset=0; offset<sizeof(input); offset++) {
+        if (offset < sizeof(input) - 1) {
+            UTF8_GET_CHAR_UNSAFE(input, offset, c);
+            if(c != result[i]){
+                log_err("ERROR: UTF8_GET_CHAR_UNSAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i], c);
+           
+            }
+
+            U8_GET_UNSAFE(input, offset, c);
+            if(c != result[i]){
+                log_err("ERROR: U8_GET_UNSAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i], c);
+           
+            }
+        }
+
+        U8_GET(input, 0, offset, sizeof(input), c);
+        if(UTF_IS_ERROR(result[i+1]) ? c >= 0 : c != result[i+1]){
+            log_err("ERROR: UTF8_GET_CHAR_SAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i+1], c);
+        }
+
+        UTF8_GET_CHAR_SAFE(input, 0, offset, sizeof(input), c, FALSE);
+        if(c != result[i+1]){
+            log_err("ERROR: UTF8_GET_CHAR_SAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i+1], c);
+        }
+
+        UTF8_GET_CHAR_SAFE(input, 0, offset, sizeof(input), c, TRUE);
+        if(c != result[i+2]){
+            log_err("ERROR: UTF8_GET_CHAR_SAFE(strict) failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i+2], c);
+        }
+         
+         i=(uint16_t)(i+3);
+    }
+}
+
+static void TestNextPrevChar(){
+    static const uint8_t input[]={0x61, 0xf0, 0x90, 0x90, 0x81, 0xc0, 0x80, 0xfd, 0xbe, 0xc2, 0x61, 0x81, 0x90, 0x90, 0xf0, 0x00};
+    static const UChar32 result[]={
+    /*next_unsafe    next_safe_ns        next_safe_s          prev_unsafe   prev_safe_ns         prev_safe_s*/
+        0x0061,        0x0061,             0x0061,              0x0000,       0x0000,             0x0000,
+        0x10401,       0x10401,            0x10401,             0xf0,         UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0x90,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0x2841410,    UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0x90,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0xa1050,      UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0x81,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0x2841,       UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0x00,          UTF8_ERROR_VALUE_2, UTF8_ERROR_VALUE_2,  0x61,         0x61,               0x61,
+        0x80,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0xc2,         UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0xfd,          UTF8_ERROR_VALUE_2, UTF8_ERROR_VALUE_2,  0x77e,        UTF8_ERROR_VALUE_2, UTF8_ERROR_VALUE_2,
+        0xbe,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0xfd,         UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0xa1,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0x00,         UTF8_ERROR_VALUE_2, UTF8_ERROR_VALUE_2,
+        0x61,          0x61,               0x61,                0xc0,         UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0x81,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0x10401,      0x10401,            0x10401,
+        0x90,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0x410,        UTF_ERROR_VALUE,    UTF_ERROR_VALUE,
+        0x90,          UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0x410,        UTF8_ERROR_VALUE_2, UTF8_ERROR_VALUE_2,
+        0x0840,        UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,  0xf0,         UTF8_ERROR_VALUE_1, UTF8_ERROR_VALUE_1,
+        0x0000,        0x0000,             0x0000,              0x0061,       0x0061,             0x0061
+    };
+    static const int32_t movedOffset[]={
+   /*next_unsafe    next_safe_ns  next_safe_s       prev_unsafe   prev_safe_ns     prev_safe_s*/
+        1,            1,           1,                15,           15,               15,
+        5,            5,           5,                14,           14 ,              14, 
+        3,            3,           3,                9,            13,               13, 
+        4,            4,           4,                9,            12,               12,
+        5,            5,           5,                9,            11,               11, 
+        7,            7,           7,                10,           10,               10,  
+        7,            7,           7,                9,            9,                9,  
+        8,            9,           9,                7,            7,                7, 
+        9,            9,           9,                7,            7,                7,  
+        11,           10,          10,               5,            5,                5,    
+        11,           11,          11,               5,            5,                5,   
+        12,           12,          12,               1,            1,                1, 
+        13,           13,          13,               1,            1,                1,   
+        14,           14,          14,               1,            1,                1,      
+        14,           15,          15,               1,            1,                1,  
+        14,           16,          16,               0,            0,                0, 
+
+
+    };
+
+
+    UChar32 c=0x0000;
+    uint32_t i=0;
+    uint32_t offset=0;
+    int32_t setOffset=0;
+    for(offset=0; offset<sizeof(input); offset++){
+         if (offset < sizeof(input) - 2) { /* Can't have it go off the end of the array based on input */
+             setOffset=offset;
+             UTF8_NEXT_CHAR_UNSAFE(input, setOffset, c);
+             if(setOffset != movedOffset[i]){
+                 log_err("ERROR: UTF8_NEXT_CHAR_UNSAFE failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                     offset, movedOffset[i], setOffset);
+             }
+             if(c != result[i]){
+                 log_err("ERROR: UTF8_NEXT_CHAR_UNSAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i], c);
+             }
+
+             setOffset=offset;
+             U8_NEXT_UNSAFE(input, setOffset, c);
+             if(setOffset != movedOffset[i]){
+                 log_err("ERROR: U8_NEXT_UNSAFE failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                     offset, movedOffset[i], setOffset);
+             }
+             if(c != result[i]){
+                 log_err("ERROR: U8_NEXT_UNSAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i], c);
+             }
+         }
+
+         setOffset=offset;
+         UTF8_NEXT_CHAR_SAFE(input, setOffset, sizeof(input), c, FALSE);
+         if(setOffset != movedOffset[i+1]){
+             log_err("ERROR: UTF8_NEXT_CHAR_SAFE failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+1], setOffset);
+         }
+         if(c != result[i+1]){
+             log_err("ERROR: UTF8_NEXT_CHAR_SAFE failed for input=%ld. Expected:%lx Got:%lx\n", offset, result[i+1], c);
+         }
+
+         setOffset=offset;
+         U8_NEXT(input, setOffset, sizeof(input), c);
+         if(setOffset != movedOffset[i+1]){
+             log_err("ERROR: U8_NEXT failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+1], setOffset);
+         }
+         if(UTF_IS_ERROR(result[i+1]) ? c >= 0 : c != result[i+1]){
+             log_err("ERROR: U8_NEXT failed for input=%ld. Expected:%lx Got:%lx\n", offset, result[i+1], c);
+         }
+
+         setOffset=offset;
+         UTF8_NEXT_CHAR_SAFE(input, setOffset, sizeof(input), c, TRUE);
+         if(setOffset != movedOffset[i+1]){
+             log_err("ERROR: UTF8_NEXT_CHAR_SAFE(strict) failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+2], setOffset);
+         }
+         if(c != result[i+2]){
+             log_err("ERROR: UTF8_NEXT_CHAR_SAFE(strict) failed for input=%ld. Expected:%lx Got:%lx\n", offset, result[i+2], c);
+         }
+
+         i=i+6;
+    }
+
+    i=0;
+    for(offset=sizeof(input); offset > 0; --offset){
+         setOffset=offset;
+         UTF8_PREV_CHAR_UNSAFE(input, setOffset, c);
+         if(setOffset != movedOffset[i+3]){
+             log_err("ERROR: UTF8_PREV_CHAR_UNSAFE failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+3], setOffset);
+         }
+         if(c != result[i+3]){
+             log_err("ERROR: UTF8_PREV_CHAR_UNSAFE failed for offset=%ld. Expected:%lx Got:%lx\n", offset, result[i+3], c);
+         }
+
+         setOffset=offset;
+         UTF8_PREV_CHAR_SAFE(input, 0, setOffset, c, FALSE);
+         if(setOffset != movedOffset[i+4]){
+             log_err("ERROR: UTF8_PREV_CHAR_SAFE failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+4], setOffset);
+         }
+         if(c != result[i+4]){
+             log_err("ERROR: UTF8_PREV_CHAR_SAFE failed for input=%ld. Expected:%lx Got:%lx\n", offset, result[i+4], c);
+         }
+
+         setOffset=offset;
+         U8_PREV(input, 0, setOffset, c);
+         if(setOffset != movedOffset[i+4]){
+             log_err("ERROR: U8_PREV failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+4], setOffset);
+         }
+         if(UTF_IS_ERROR(result[i+4]) ? c >= 0 : c != result[i+4]){
+             log_err("ERROR: U8_PREV failed for input=%ld. Expected:%lx Got:%lx\n", offset, result[i+4], c);
+         }
+
+         setOffset=offset;
+         UTF8_PREV_CHAR_SAFE(input, 0,  setOffset, c, TRUE);
+         if(setOffset != movedOffset[i+5]){
+             log_err("ERROR: UTF8_PREV_CHAR_SAFE(strict) failed to move the offset correctly at %d\n ExpectedOffset:%d Got %d\n",
+                 offset, movedOffset[i+5], setOffset);
+         } 
+         if(c != result[i+5]){
+             log_err("ERROR: UTF8_PREV_CHAR_SAFE(strict) failed for input=%ld. Expected:%lx Got:%lx\n", offset, result[i+5], c);
+         }
+
+         i=i+6;
+    }
+
+    {
+        /* test non-characters */
+        static const uint8_t nonChars[]={
+            0xef, 0xb7, 0x90,       /* U+fdd0 */
+            0xef, 0xbf, 0xbf,       /* U+feff */
+            0xf0, 0x9f, 0xbf, 0xbe, /* U+1fffe */
+            0xf0, 0xbf, 0xbf, 0xbf, /* U+3ffff */
+            0xf4, 0x8f, 0xbf, 0xbe  /* U+10fffe */
+        };
+
+        UChar32 ch;
+        int32_t idx;
+
+        for(idx=0; idx<(int32_t)sizeof(nonChars);) {
+            U8_NEXT(nonChars, idx, sizeof(nonChars), ch);
+            if(!U_IS_UNICODE_NONCHAR(ch)) {
+                log_err("U8_NEXT(before %d) failed to read a non-character\n", idx);
+            }
+        }
+        for(idx=(int32_t)sizeof(nonChars); idx>0;) {
+            U8_PREV(nonChars, 0, idx, ch);
+            if(!U_IS_UNICODE_NONCHAR(ch)) {
+                log_err("U8_PREV(at %d) failed to read a non-character\n", idx);
+            }
+        }
+    }
+}
+
+static void TestFwdBack(){ 
+    static const uint8_t input[]={0x61, 0xF0, 0x90, 0x90, 0x81, 0xff, 0x62, 0xc0, 0x80, 0x7f, 0x8f, 0xc0, 0x63, 0x81, 0x90, 0x90, 0xF0, 0x00};
+    static const uint16_t fwd_unsafe[] ={1, 5, 6, 7,  9, 10, 11, 13, 14, 15, 16,  20, };
+    static const uint16_t fwd_safe[]   ={1, 5, 6, 7, 9, 10, 11,  12, 13, 14, 15, 16, 17, 18};
+    static const uint16_t back_unsafe[]={17, 16, 12, 11, 9, 7, 6, 5, 1, 0};
+    static const uint16_t back_safe[]  ={17, 16, 15, 14, 13, 12, 11, 10, 9, 7, 6, 5, 1, 0};
+
+    static const uint16_t Nvalue[]= {0, 1, 2, 3, 1, 2, 1, 5};
+    static const uint16_t fwd_N_unsafe[] ={0, 1, 6, 10, 11, 14, 15};
+    static const uint16_t fwd_N_safe[]   ={0, 1, 6, 10, 11, 13, 14, 18}; /*safe macro keeps it at the end of the string */
+    static const uint16_t back_N_unsafe[]={18, 17, 12, 7, 6, 1, 0};
+    static const uint16_t back_N_safe[]  ={18, 17, 15, 12, 11, 9, 7, 0};   
+
+
+    uint32_t offunsafe=0, offsafe=0;
+
+    uint32_t i=0;
+    while(offunsafe < sizeof(input)){
+        UTF8_FWD_1_UNSAFE(input, offunsafe);
+        if(offunsafe != fwd_unsafe[i]){
+            log_err("ERROR: Forward_unsafe offset expected:%d, Got:%d\n", fwd_unsafe[i], offunsafe);
+        }
+        i++;
+    }
+
+    i=0;
+    while(offunsafe < sizeof(input)){
+        U8_FWD_1_UNSAFE(input, offunsafe);
+        if(offunsafe != fwd_unsafe[i]){
+            log_err("ERROR: U8_FWD_1_UNSAFE offset expected:%d, Got:%d\n", fwd_unsafe[i], offunsafe);
+        }
+        i++;
+    }
+
+    i=0;
+    while(offsafe < sizeof(input)){
+        UTF8_FWD_1_SAFE(input, offsafe, sizeof(input));
+        if(offsafe != fwd_safe[i]){
+            log_err("ERROR: Forward_safe offset expected:%d, Got:%d\n", fwd_safe[i], offsafe);
+        }
+        i++;
+    }
+
+    i=0;
+    while(offsafe < sizeof(input)){
+        U8_FWD_1(input, offsafe, sizeof(input));
+        if(offsafe != fwd_safe[i]){
+            log_err("ERROR: U8_FWD_1 offset expected:%d, Got:%d\n", fwd_safe[i], offsafe);
+        }
+        i++;
+    }
+
+    offunsafe=sizeof(input);
+    i=0;
+    while(offunsafe > 0){
+        UTF8_BACK_1_UNSAFE(input, offunsafe);
+        if(offunsafe != back_unsafe[i]){
+            log_err("ERROR: Backward_unsafe offset expected:%d, Got:%d\n", back_unsafe[i], offunsafe);
+        }
+        i++;
+    }
+
+    offunsafe=sizeof(input);
+    i=0;
+    while(offunsafe > 0){
+        U8_BACK_1_UNSAFE(input, offunsafe);
+        if(offunsafe != back_unsafe[i]){
+            log_err("ERROR: U8_BACK_1_UNSAFE offset expected:%d, Got:%d\n", back_unsafe[i], offunsafe);
+        }
+        i++;
+    }
+
+    i=0;
+    offsafe=sizeof(input);
+    while(offsafe > 0){
+        UTF8_BACK_1_SAFE(input, 0,  offsafe);
+        if(offsafe != back_safe[i]){
+            log_err("ERROR: Backward_safe offset expected:%d, Got:%d\n", back_unsafe[i], offsafe);
+        }
+        i++;
+    }
+
+    i=0;
+    offsafe=sizeof(input);
+    while(offsafe > 0){
+        U8_BACK_1(input, 0,  offsafe);
+        if(offsafe != back_safe[i]){
+            log_err("ERROR: U8_BACK_1 offset expected:%d, Got:%d\n", back_unsafe[i], offsafe);
+        }
+        i++;
+    }
+
+    offunsafe=0;
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){  
+        UTF8_FWD_N_UNSAFE(input, offunsafe, Nvalue[i]);
+        if(offunsafe != fwd_N_unsafe[i]){
+            log_err("ERROR: Forward_N_unsafe offset=%d expected:%d, Got:%d\n", i, fwd_N_unsafe[i], offunsafe);
+        }
+    }
+
+    offunsafe=0;
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){  
+        U8_FWD_N_UNSAFE(input, offunsafe, Nvalue[i]);
+        if(offunsafe != fwd_N_unsafe[i]){
+            log_err("ERROR: U8_FWD_N_UNSAFE offset=%d expected:%d, Got:%d\n", i, fwd_N_unsafe[i], offunsafe);
+        }
+    }
+
+    offsafe=0;
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
+        UTF8_FWD_N_SAFE(input, offsafe, sizeof(input), Nvalue[i]);
+        if(offsafe != fwd_N_safe[i]){
+            log_err("ERROR: Forward_N_safe offset=%d expected:%d, Got:%d\n", i, fwd_N_safe[i], offsafe);
+        }
+    
+    }
+
+    offsafe=0;
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
+        U8_FWD_N(input, offsafe, sizeof(input), Nvalue[i]);
+        if(offsafe != fwd_N_safe[i]){
+            log_err("ERROR: U8_FWD_N offset=%d expected:%d, Got:%d\n", i, fwd_N_safe[i], offsafe);
+        }
+    
+    }
+
+    offunsafe=sizeof(input);
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){
+        UTF8_BACK_N_UNSAFE(input, offunsafe, Nvalue[i]);
+        if(offunsafe != back_N_unsafe[i]){
+            log_err("ERROR: backward_N_unsafe offset=%d expected:%d, Got:%d\n", i, back_N_unsafe[i], offunsafe);
+        }
+    }
+
+    offunsafe=sizeof(input);
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){
+        U8_BACK_N_UNSAFE(input, offunsafe, Nvalue[i]);
+        if(offunsafe != back_N_unsafe[i]){
+            log_err("ERROR: U8_BACK_N_UNSAFE offset=%d expected:%d, Got:%d\n", i, back_N_unsafe[i], offunsafe);
+        }
+    }
+
+    offsafe=sizeof(input);
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
+        UTF8_BACK_N_SAFE(input, 0, offsafe, Nvalue[i]);
+        if(offsafe != back_N_safe[i]){
+            log_err("ERROR: backward_N_safe offset=%d expected:%d, Got:%ld\n", i, back_N_safe[i], offsafe);
+        }
+    }
+
+    offsafe=sizeof(input);
+    for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
+        U8_BACK_N(input, 0, offsafe, Nvalue[i]);
+        if(offsafe != back_N_safe[i]){
+            log_err("ERROR: U8_BACK_N offset=%d expected:%d, Got:%ld\n", i, back_N_safe[i], offsafe);
+        }
+    }
+}
+
+static void TestSetChar(){
+    static const uint8_t input[]
+        = {0x61, 0xe4, 0xba, 0x8c, 0x7f, 0xfe, 0x62, 0xc5, 0x7f, 0x61, 0x80, 0x80, 0xe0, 0x00 };
+    static const int16_t start_unsafe[]
+        = {0,    1,    1,    1,    4,    5,    6,    7,    8,    9,    9,    9,    12,   13 };
+    static const int16_t start_safe[]
+        = {0,    1,    1,    1,    4,    5,    6,    7,    8,    9,    10,   11,   12,   13 };
+    static const int16_t limit_unsafe[]
+        = {0,    1,    4,    4,    4,    5,    6,    7,    9,    9,    10,   10,   10,   15 };
+    static const int16_t limit_safe[]
+        = {0,    1,    4,    4,    4,    5,    6,    7,    8,    9,    10,   11,   12,   13 };
+    
+    uint32_t i=0;
+    int32_t offset=0, setOffset=0;
+    for(offset=0; offset<(int32_t)sizeof(input); offset++){
+         setOffset=offset;
+         UTF8_SET_CHAR_START_UNSAFE(input, setOffset);
+         if(setOffset != start_unsafe[i]){
+             log_err("ERROR: UTF8_SET_CHAR_START_UNSAFE failed for offset=%ld. Expected:%ld Got:%ld\n", offset, start_unsafe[i], setOffset);
+         }
+
+         setOffset=offset;
+         U8_SET_CP_START_UNSAFE(input, setOffset);
+         if(setOffset != start_unsafe[i]){
+             log_err("ERROR: U8_SET_CP_START_UNSAFE failed for offset=%ld. Expected:%ld Got:%ld\n", offset, start_unsafe[i], setOffset);
+         }
+
+         setOffset=offset;
+         UTF8_SET_CHAR_START_SAFE(input, 0, setOffset);
+         if(setOffset != start_safe[i]){
+             log_err("ERROR: UTF8_SET_CHAR_START_SAFE failed for offset=%ld. Expected:%ld Got:%ld\n", offset, start_safe[i], setOffset);
+         }
+
+         setOffset=offset;
+         U8_SET_CP_START(input, 0, setOffset);
+         if(setOffset != start_safe[i]){
+             log_err("ERROR: U8_SET_CP_START failed for offset=%ld. Expected:%ld Got:%ld\n", offset, start_safe[i], setOffset);
+         }
+
+         if (offset != 0) { /* Can't have it go off the end of the array */
+             setOffset=offset; 
+             UTF8_SET_CHAR_LIMIT_UNSAFE(input, setOffset);
+             if(setOffset != limit_unsafe[i]){
+                 log_err("ERROR: UTF8_SET_CHAR_LIMIT_UNSAFE failed for offset=%ld. Expected:%ld Got:%ld\n", offset, limit_unsafe[i], setOffset);
+             }
+
+             setOffset=offset;
+             U8_SET_CP_LIMIT_UNSAFE(input, setOffset);
+             if(setOffset != limit_unsafe[i]){
+                 log_err("ERROR: U8_SET_CP_LIMIT_UNSAFE failed for offset=%ld. Expected:%ld Got:%ld\n", offset, limit_unsafe[i], setOffset);
+             }
+         }
+
+         setOffset=offset; 
+         UTF8_SET_CHAR_LIMIT_SAFE(input,0, setOffset, sizeof(input));
+         if(setOffset != limit_safe[i]){
+             log_err("ERROR: UTF8_SET_CHAR_LIMIT_SAFE failed for offset=%ld. Expected:%ld Got:%ld\n", offset, limit_safe[i], setOffset);
+         }
+
+         setOffset=offset; 
+         U8_SET_CP_LIMIT(input,0, setOffset, sizeof(input));
+         if(setOffset != limit_safe[i]){
+             log_err("ERROR: U8_SET_CP_LIMIT failed for offset=%ld. Expected:%ld Got:%ld\n", offset, limit_safe[i], setOffset);
+         }
+
+         i++;
+    }
+}
+
+static void TestAppendChar(){
+    static const uint8_t s[11]={0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00};
+    static const uint32_t test[]={
+     /*append-position(unsafe),  CHAR to be appended  */
+        0,                        0x10401,
+        2,                        0x0028,
+        2,                        0x007f, 
+        3,                        0xd801,
+        1,                        0x20402,
+        8,                        0x10401,
+        5,                        0xc0,
+        5,                        0xc1,
+        5,                        0xfd,
+        6,                        0x80,
+        6,                        0x81,
+        6,                        0xbf,
+        7,                        0xfe,
+
+    /*append-position(safe),     CHAR to be appended */
+        0,                        0x10401,
+        2,                        0x0028, 
+        3,                        0x7f,
+        3,                        0xd801,   /* illegal for UTF-8 starting with Unicode 3.2 */
+        1,                        0x20402,
+        9,                        0x10401,
+        5,                        0xc0,
+        5,                        0xc1,
+        5,                        0xfd,
+        6,                        0x80,
+        6,                        0x81,
+        6,                        0xbf,
+        7,                        0xfe,
+   
+    };
+    static const uint16_t movedOffset[]={
+        /*offset-moved-to(unsafe)*/
+          4,              /*for append-pos: 0 , CHAR 0x10401*/
+          3,              
+          3,
+          6,
+          5,
+          12,
+          7,
+          7, 
+          7,
+          8,
+          8,
+          8,
+          9,
+
+          /*offset-moved-to(safe)*/
+          4,              /*for append-pos: 0, CHAR  0x10401*/
+          3,
+          4,
+          6,
+          5,
+          11,
+          7,
+          7, 
+          7,
+          8,
+          8,
+          8,
+          9,
+        
+    };
+          
+    static const uint8_t result[][11]={
+        /*unsafe*/
+        {0xF0, 0x90, 0x90, 0x81, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00},    
+        {0x61, 0x62, 0x28, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0x62, 0x7f, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0x62, 0x63, 0xed, 0xa0, 0x81, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0xF0, 0xa0, 0x90, 0x82, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0xF0, 0x90, 0x90},
+        
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0xc3, 0x80, 0x68, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0xc3, 0x81, 0x68, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0xc3, 0xbd, 0x68, 0x69, 0x6a, 0x00},
+        
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0xc2, 0x80, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0xc2, 0x81, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0xc2, 0xbf, 0x69, 0x6a, 0x00},
+
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0xc3, 0xbe, 0x6a, 0x00},
+        /*safe*/
+        {0xF0, 0x90, 0x90, 0x81, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00},     
+        {0x61, 0x62, 0x28, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0x62, 0x63, 0x7f, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0xef, 0xbf, 0xbf, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0xF0, 0xa0, 0x90, 0x82, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x00}, 
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0xc2, 0x9f}, /*gets UTF8_ERROR_VALUE_2 which takes 2 bytes 0xc0, 0x9f*/
+        
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0xc3, 0x80, 0x68, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0xc3, 0x81, 0x68, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0xc3, 0xbd, 0x68, 0x69, 0x6a, 0x00},
+        
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0xc2, 0x80, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0xc2, 0x81, 0x69, 0x6a, 0x00},
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0xc2, 0xbf, 0x69, 0x6a, 0x00},
+        
+        {0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0xc3, 0xbe, 0x6a, 0x00},
+             
+    };
+    uint16_t i, count=0;
+    uint8_t str[12];
+    uint32_t offset;
+/*    UChar32 c=0;*/
+    uint16_t size=sizeof(s)/sizeof(s[0]);
+    for(i=0; i<sizeof(test)/sizeof(test[0]); i=(uint16_t)(i+2)){
+        uprv_memcpy(str, s, size);
+        offset=test[i];  
+        if(count<13){
+            UTF8_APPEND_CHAR_UNSAFE(str, offset, test[i+1]);
+            if(offset != movedOffset[count]){
+                log_err("ERROR: UTF8_APPEND_CHAR_UNSAFE failed to move the offset correctly for count=%d.\nExpectedOffset=%d  currentOffset=%d\n", 
+                    count, movedOffset[count], offset);
+                     
+            }
+            if(uprv_memcmp(str, result[count], size) !=0){
+                log_err("ERROR: UTF8_APPEND_CHAR_UNSAFE failed for count=%d. \nExpected:", count);
+                printUChars(result[count], size);
+                log_err("\nGot:      ");
+                printUChars(str, size);
+                log_err("\n");
+            }
+        }else{
+            UTF8_APPEND_CHAR_SAFE(str, offset, size, test[i+1]);
+            if(offset != movedOffset[count]){
+                log_err("ERROR: UTF8_APPEND_CHAR_SAFE failed to move the offset correctly for count=%d.\nExpectedOffset=%d  currentOffset=%d\n", 
+                    count, movedOffset[count], offset);
+                     
+            }
+            if(uprv_memcmp(str, result[count], size) !=0){
+                log_err("ERROR: UTF8_APPEND_CHAR_SAFE failed for count=%d. \nExpected:", count);
+                printUChars(result[count], size);
+                log_err("\nGot:     ");
+                printUChars(str, size);
+                log_err("\n");
+            }
+            /*call the API instead of MACRO
+            uprv_memcpy(str, s, size);
+            offset=test[i]; 
+            c=test[i+1];
+            if((uint32_t)(c)<=0x7f) { 
+                  (str)[(offset)++]=(uint8_t)(c); 
+            } else { 
+                 (offset)=utf8_appendCharSafeBody(str, (int32_t)(offset), (int32_t)(size), c); 
+            }
+            if(offset != movedOffset[count]){
+                log_err("ERROR: utf8_appendCharSafeBody() failed to move the offset correctly for count=%d.\nExpectedOffset=%d  currentOffset=%d\n", 
+                    count, movedOffset[count], offset);
+                     
+            }
+            if(uprv_memcmp(str, result[count], size) !=0){
+                log_err("ERROR: utf8_appendCharSafeBody() failed for count=%d. \nExpected:", count);
+                printUChars(result[count], size);
+                printf("\nGot:     ");
+                printUChars(str, size);
+                printf("\n");
+            }
+            */
+        }
+        count++;
+    }  
+   
+
+}
+
+static void TestAppend() {
+    static const UChar32 codePoints[]={
+        0x61, 0xdf, 0x901, 0x3040,
+        0xac00, 0xd800, 0xdbff, 0xdcde,
+        0xdffd, 0xe000, 0xffff, 0x10000,
+        0x12345, 0xe0021, 0x10ffff, 0x110000,
+        0x234567, 0x7fffffff, -1, -1000,
+        0, 0x400
+    };
+    static const uint8_t expectUnsafe[]={
+        0x61,  0xc3, 0x9f,  0xe0, 0xa4, 0x81,  0xe3, 0x81, 0x80,
+        0xea, 0xb0, 0x80,  0xed, 0xa0, 0x80,  0xed, 0xaf, 0xbf,  0xed, 0xb3, 0x9e,
+        0xed, 0xbf, 0xbd,  0xee, 0x80, 0x80,  0xef, 0xbf, 0xbf,  0xf0, 0x90, 0x80, 0x80,
+        0xf0, 0x92, 0x8d, 0x85,  0xf3, 0xa0, 0x80, 0xa1,  0xf4, 0x8f, 0xbf, 0xbf,  /* not 0x110000 */
+        /* none from this line */
+        0,  0xd0, 0x80
+    }, expectSafe[]={
+        0x61,  0xc3, 0x9f,  0xe0, 0xa4, 0x81,  0xe3, 0x81, 0x80,
+        0xea, 0xb0, 0x80,  /* no surrogates */
+        /* no surrogates */  0xee, 0x80, 0x80,  0xef, 0xbf, 0xbf,  0xf0, 0x90, 0x80, 0x80,
+        0xf0, 0x92, 0x8d, 0x85,  0xf3, 0xa0, 0x80, 0xa1,  0xf4, 0x8f, 0xbf, 0xbf,  /* not 0x110000 */
+        /* none from this line */
+        0,  0xd0, 0x80
+    };
+
+    uint8_t buffer[100];
+    UChar32 c;
+    int32_t i, length;
+    UBool isError, expectIsError, wrongIsError;
+
+    length=0;
+    for(i=0; i<LENGTHOF(codePoints); ++i) {
+        c=codePoints[i];
+        if(c<0 || 0x10ffff<c) {
+            continue; /* skip non-code points for U8_APPEND_UNSAFE */
+        }
+
+        U8_APPEND_UNSAFE(buffer, length, c);
+    }
+    if(length!=LENGTHOF(expectUnsafe) || 0!=memcmp(buffer, expectUnsafe, length)) {
+        log_err("U8_APPEND_UNSAFE did not generate the expected output\n");
+    }
+
+    length=0;
+    wrongIsError=FALSE;
+    for(i=0; i<LENGTHOF(codePoints); ++i) {
+        c=codePoints[i];
+        expectIsError= c<0 || 0x10ffff<c || U_IS_SURROGATE(c);
+        isError=FALSE;
+
+        U8_APPEND(buffer, length, LENGTHOF(buffer), c, isError);
+        wrongIsError|= isError!=expectIsError;
+    }
+    if(wrongIsError) {
+        log_err("U8_APPEND did not set isError correctly\n");
+    }
+    if(length!=LENGTHOF(expectSafe) || 0!=memcmp(buffer, expectSafe, length)) {
+        log_err("U8_APPEND did not generate the expected output\n");
+    }
+}
+
+static void
+TestSurrogates() {
+    static const uint8_t b[]={
+        0xc3, 0x9f,             /*  00DF */
+        0xed, 0x9f, 0xbf,       /*  D7FF */
+        0xed, 0xa0, 0x81,       /*  D801 */
+        0xed, 0xbf, 0xbe,       /*  DFFE */
+        0xee, 0x80, 0x80,       /*  E000 */
+        0xf0, 0x97, 0xbf, 0xbe  /* 17FFE */
+    };
+    static const UChar32 cp[]={
+        0xdf, 0xd7ff, 0xd801, 0xdffe, 0xe000, 0x17ffe
+    };
+
+    UChar32 cu, cs, cl;
+    int32_t i, j, k, iu, is, il, length;
+
+    k=0; /* index into cp[] */
+    length=LENGTHOF(b);
+    for(i=0; i<length;) {
+        j=i;
+        U8_NEXT_UNSAFE(b, j, cu);
+        iu=j;
+
+        j=i;
+        U8_NEXT(b, j, length, cs);
+        is=j;
+
+        j=i;
+        L8_NEXT(b, j, length, cl);
+        il=j;
+
+        if(cu!=cp[k]) {
+            log_err("U8_NEXT_UNSAFE(b[%ld])=U+%04lX != U+%04lX\n", (long)i, (long)cu, (long)cp[k]);
+        }
+
+        /* U8_NEXT() returns <0 for surrogate code points */
+        if(U_IS_SURROGATE(cu) ? cs>=0 : cs!=cu) {
+            log_err("U8_NEXT(b[%ld])=U+%04lX != U+%04lX\n", (long)i, (long)cs, (long)cu);
+        }
+
+        /* L8_NEXT() returns surrogate code points like U8_NEXT_UNSAFE() */
+        if(cl!=cu) {
+            log_err("L8_NEXT(b[%ld])=U+%04lX != U+%04lX\n", (long)i, (long)cl, (long)cu);
+        }
+
+        if(is!=iu || il!=iu) {
+            log_err("U8_NEXT(b[%ld]) or L8_NEXT(b[%ld]) did not advance the index correctly\n", (long)i, (long)i);
+        }
+
+        ++k;    /* next code point */
+        i=iu;   /* advance by one UTF-8 sequence */
+    }
+
+    while(i>0) {
+        --k; /* previous code point */
+
+        j=i;
+        U8_PREV_UNSAFE(b, j, cu);
+        iu=j;
+
+        j=i;
+        U8_PREV(b, 0, j, cs);
+        is=j;
+
+        j=i;
+        L8_PREV(b, 0, j, cl);
+        il=j;
+
+        if(cu!=cp[k]) {
+            log_err("U8_PREV_UNSAFE(b[%ld])=U+%04lX != U+%04lX\n", (long)i, (long)cu, (long)cp[k]);
+        }
+
+        /* U8_PREV() returns <0 for surrogate code points */
+        if(U_IS_SURROGATE(cu) ? cs>=0 : cs!=cu) {
+            log_err("U8_PREV(b[%ld])=U+%04lX != U+%04lX\n", (long)i, (long)cs, (long)cu);
+        }
+
+        /* L8_PREV() returns surrogate code points like U8_PREV_UNSAFE() */
+        if(cl!=cu) {
+            log_err("L8_PREV(b[%ld])=U+%04lX != U+%04lX\n", (long)i, (long)cl, (long)cu);
+        }
+
+        if(is!=iu || il !=iu) {
+            log_err("U8_PREV(b[%ld]) or L8_PREV(b[%ld]) did not advance the index correctly\n", (long)i, (long)i);
+        }
+
+        i=iu;   /* go back by one UTF-8 sequence */
+    }
+}
+
+static void printUChars(const uint8_t *uchars, int16_t len){
+    int16_t i=0;
+    for(i=0; i<len; i++){
+        log_err("0x%02x ", *(uchars+i));
+    }
+}