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test_json.c
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/*
* Copyright 2020 New Relic Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*/
#include "nr_axiom.h"
#include <stdio.h>
#include <stdlib.h>
#include "util_json.h"
#include "util_memory.h"
#include "util_strings.h"
#include "tlib_main.h"
static int test_nr_json_escape(char** dstp, const char* src) {
int len = 0;
if (0 == dstp) {
return 0;
}
len = src ? nr_strlen(src) : 0;
*dstp = (char*)nr_malloc(6 * len + 3);
return nr_json_escape(*dstp, src);
}
static void test_json_worker(void) {
char* dest = 0;
int count;
count = test_nr_json_escape(0, "");
tlib_pass_if_true("NULL dest buffer", 0 == count, "NULL dest buffer");
count = test_nr_json_escape(&dest, 0);
tlib_pass_if_true("null json string", 0 == nr_strcmp("\"\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("null json string", count == 2, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "");
tlib_pass_if_true("empty json string", 0 == nr_strcmp("\"\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("empty json string", count == 2, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "abcd");
tlib_pass_if_true("abcd json string", 0 == nr_strcmp("\"abcd\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("abcd json string", count == 6, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\"");
tlib_pass_if_true("double quote json string",
0 == nr_strcmp("\"\\\"\"", dest), "escaped string is %s",
dest);
tlib_pass_if_true("double quote json string", count == 4,
"escaped string is %s", dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\n");
tlib_pass_if_true("newline json string", 0 == nr_strcmp("\"\\n\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("newline json string", count == 4, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\r");
tlib_pass_if_true("return json string", 0 == nr_strcmp("\"\\r\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("return json string", count == 4, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\f");
tlib_pass_if_true("formfeed json string", 0 == nr_strcmp("\"\\f\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("formfeed json string", count == 4, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\b");
tlib_pass_if_true("backspace json string", 0 == nr_strcmp("\"\\b\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("backspace json string", count == 4, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\t");
tlib_pass_if_true("tab json string", 0 == nr_strcmp("\"\\t\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("tab json string", count == 4, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "\\");
tlib_pass_if_true("backslash json string", 0 == nr_strcmp("\"\\\\\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("backslash json string", count == 4, "escaped string is %s",
dest);
nr_free(dest);
count = test_nr_json_escape(&dest, "/");
tlib_pass_if_true("forwardslash json string", 0 == nr_strcmp("\"\\/\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("forwardslash json string", count == 4,
"escaped string is %s", dest);
nr_free(dest);
/*
* The GBP sign takes up 2 bytes.
* See http://www.fileformat.info/info/unicode/char/a3/index.htm for Great
* Britain Pound Sign hex value is 0xc2 0xa3 UTF-8 is \u00A3
*/
count = test_nr_json_escape(&dest, "GBP sign £xxx");
tlib_pass_if_true("character GBP json string",
0 == nr_strcmp("\"GBP sign \\u00a3xxx\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("character GBP json string", count == 20, "count==%d",
count);
nr_free(dest);
/*
* The same thing, but express the string in C-hex notation
*/
count = test_nr_json_escape(&dest, "GBP sign \xc2\xa3xxx");
tlib_pass_if_true("character GBP json string",
0 == nr_strcmp("\"GBP sign \\u00a3xxx\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("character GBP json string", count == 20, "count==%d",
count);
nr_free(dest);
/*
* The euro sign takes up 3 bytes.
* See http://www.fileformat.info/info/unicode/char/20aC/index.htm for Euro
* currency hex value is 0xe2 0x82 0xac UTF-8 is \u20ac
*/
count = test_nr_json_escape(&dest, "Euro sign €xxx");
tlib_pass_if_true("character Euro json string",
0 == nr_strcmp("\"Euro sign \\u20acxxx\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("character Euro json string", count == 21, "count==%d",
count);
nr_free(dest);
/*
* The same thing, but express the string in C-hex notation
*/
count = test_nr_json_escape(&dest, "Euro sign \xe2\x82\xacxxx");
tlib_pass_if_true("character Euro json string",
0 == nr_strcmp("\"Euro sign \\u20acxxx\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("character Euro json string", count == 21, "count==%d",
count);
nr_free(dest);
/*
* The Emoji character U+1F602 "Face with Tears of Joy" is in a code plane 01,
* eg beyond the BMP. This is documented as an example encoding fault for
* Json; See http://en.wikipedia.org/wiki/Json#Data_portability_issues See
* http://en.wikipedia.org/wiki/Emoji
*
* This character needs to be encoded into java script using surrogate pairs
*
* See http://www.fileformat.info/info/unicode/char/1f602/index.htm
* hex value is 0xF0 0x9F 0x98 0x82
* UTF-8 is \u1f602
*/
count = test_nr_json_escape(&dest, "Emoji Face with Tears of Joy 😂xxx");
tlib_pass_if_true(
"Single Emoji json string",
0
== nr_strcmp("\"Emoji Face with Tears of Joy \\ud83d\\ude02xxx\"",
dest),
"escaped string is %s", dest);
tlib_pass_if_true("Single Emoji json string", count == 46, "count==%d",
count);
nr_free(dest);
/*
* Make sure we can have 2 concatenated utf-8 characters.
*/
count = test_nr_json_escape(&dest,
"Doubled Emoji Face with Tears of Joy 😂😂xxx");
tlib_pass_if_true("Doubled Emoji json string",
0
== nr_strcmp("\"Doubled Emoji Face with Tears of Joy "
"\\ud83d\\ude02\\ud83d\\ude02xxx\"",
dest),
"escaped string is %s", dest);
tlib_pass_if_true("Doubled Emoji json string", count == 66, "count==%d",
count);
nr_free(dest);
/*
* Make sure we can have 32 concatenated Emojis, with nothing else in the
* buffer. This stresses the buffer management.
*/
count = test_nr_json_escape(
&dest,
"😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂");
tlib_pass_if_true("Long Emoji json string",
0
== nr_strcmp("\""
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\\ud83d\\ude02\\ud83d\\ude02"
"\"",
dest),
"escaped string is %s", dest);
tlib_pass_if_true("32*Emoji", count == 770, "count==%d", count);
nr_free(dest);
/*
* Give an illegal utf8 encoding of the Euro sign.
* The last continuation byte is malformed: it is given here as 0xec rather
* than 0xac; the leading 2 bits must be 0b10
*/
count = test_nr_json_escape(&dest, "Mangled Euro sign \xe2\x82\xecxxx");
tlib_pass_if_true(
"invalid character Euro json string",
0 == nr_strcmp("\"Mangled Euro sign \\u00e2\\u0082\\u00ecxxx\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("invalid character Euro json string", count == 41,
"count==%d", count);
nr_free(dest);
/*
* Use a 26 bit (5 byte) encoding, which can't(?) be translated using
* surrogate pairs. There does not seem to be an example of a 26-bit (5-byte)
* encoding character, so here's a creative invention. The behavior of
* the encoder is pretty much undefined.
*/
count = test_nr_json_escape(&dest,
"26-bit encoding "
"\xfa"
"\xab"
"\xac"
"\xad"
"\xae"
"xxx");
tlib_pass_if_true("26-bit encoding",
0
== nr_strcmp("\"26-bit encoding "
"\\u00fa\\u00ab\\u00ac\\u00ad\\u00ae"
"xxx\"",
dest),
"escaped string is %s", dest);
tlib_pass_if_true("26-bit encoding", count == 51, "count==%d", count);
nr_free(dest);
/*
* Use a 31 bit (6 byte) encoding, which can't(?) be translated using
* surrogate pairs.
*/
count = test_nr_json_escape(&dest,
"31-bit encoding "
"\xfc"
"\xab"
"\xac"
"\xad"
"\xae"
"\xaf"
"xxx");
tlib_pass_if_true(
"31-bit encoding",
0
== nr_strcmp("\"31-bit encoding "
"\\u00fc\\u00ab\\u00ac\\u00ad\\u00ae\\u00af"
"xxx\"",
dest),
"escaped string is %s", dest);
tlib_pass_if_true("31-bit encoding", count == 57, "count==%d", count);
nr_free(dest);
/*
* The translation of these escape sequences is likely to yield bogus UTF-8
*/
count = test_nr_json_escape(&dest, "\x01");
tlib_pass_if_true("character x01 json string",
0 == nr_strcmp("\"\\u0001\"", dest), "escaped string is %s",
dest);
tlib_pass_if_true("character x01 json string", count == 8, "count==%d",
count);
nr_free(dest);
count = test_nr_json_escape(&dest, "\x01\x02");
tlib_pass_if_true("character x01 json string",
0 == nr_strcmp("\"\\u0001\\u0002\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("character x01 json string", count == 14, "count==%d",
count);
nr_free(dest);
count = test_nr_json_escape(&dest, "\x81\x82");
tlib_pass_if_true("character x01 json string",
0 == nr_strcmp("\"\\u0081\\u0082\"", dest),
"escaped string is %s", dest);
tlib_pass_if_true("character x01 json string", count == 14, "count==%d",
count);
nr_free(dest);
}
tlib_parallel_info_t parallel_info = {.suggested_nthreads = 4, .state_size = 0};
void test_main(void* p NRUNUSED) {
test_json_worker();
}