git.ozlabs.org Git - ccan/blob - ccan/json/test/run-stringify.c

   1 #include "common.h"
   2
   3 static char buf1[256], buf2[256];
   4
   5 /* Used for pass and fail messages */
   6 static char *quote_string(const char *str, char buf[256])
   7 {
   8         char *out = buf;
   9
  10         *out++ = '"';
  11         for (; *str != 0; str++) {
  12                 if (out - buf > 256 - 5) {
  13                         /* String is too long.  End it with `...' */
  14                         out = buf + 256 - 5;
  15                         *out++ = '.';
  16                         *out++ = '.';
  17                         *out++ = '.';
  18                         break;
  19                 }
  20                 switch (*str) {
  21                         case '\t':
  22                                 *out++ = '\\';
  23                                 *out++ = 't';
  24                                 break;
  25                         case '\n':
  26                                 *out++ = '\\';
  27                                 *out++ = 'n';
  28                                 break;
  29                         case '"':
  30                                 *out++ = '\\';
  31                                 *out++ = '"';
  32                                 break;
  33                         case '\\':
  34                                 *out++ = '\\';
  35                                 *out++ = '\\';
  36                                 break;
  37                         default:
  38                                 *out++ = *str;
  39                                 break;
  40                 }
  41         }
  42         *out++ = '"';
  43
  44         *out = 0;
  45         return buf;
  46 }
  47
  48 static void test_stringify(const char *input, const char *expected)
  49 {
  50         JsonNode *node = NULL;
  51         char *enc = NULL;
  52         char *strn = NULL;
  53         char *str = NULL;
  54
  55         node = json_decode(input);
  56         if (node == NULL) {
  57                 fail("Failed to decode %s", input);
  58                 goto end;
  59         }
  60
  61         enc = json_encode(node);
  62         if (strcmp(enc, input) != 0) {
  63                 fail("%s re-encodes to %s.  Either encode/decode is broken, or the input string needs to be normalized", input, enc);
  64                 goto end;
  65         }
  66
  67         strn = json_stringify(node, NULL);
  68         if (strcmp(strn, enc) != 0) {
  69                 fail("json_stringify with NULL space produced a different string than json_encode");
  70                 goto end;
  71         }
  72
  73         str = json_stringify(node, "\t");
  74         if (strcmp(str, expected) != 0) {
  75                 fail("Expected %s, but json_stringify produced %s",
  76                          quote_string(expected, buf1), quote_string(str, buf2));
  77                 goto end;
  78         }
  79
  80         pass("stringify %s", input);
  81
  82 end:
  83         json_delete(node);
  84         free(enc);
  85         free(strn);
  86         free(str);
  87 }
  88
  89 int main(void)
  90 {
  91         (void) chomp;
  92
  93         plan_tests(9);
  94
  95         test_stringify("[]", "[]");
  96         test_stringify("[1]", "[\n\t1\n]");
  97         test_stringify("[1,2,3]", "[\n\t1,\n\t2,\n\t3\n]");
  98         test_stringify("[[]]", "[\n\t[]\n]");
  99         test_stringify("[[1,2],[3,4]]", "[\n\t[\n\t\t1,\n\t\t2\n\t],\n\t[\n\t\t3,\n\t\t4\n\t]\n]");
 100
 101         test_stringify("{}", "{}");
 102         test_stringify("{\"one\":1}", "{\n\t\"one\": 1\n}");
 103         test_stringify("{\"one\":1,\"t*\":[2,3,10]}", "{\n\t\"one\": 1,\n\t\"t*\": [\n\t\t2,\n\t\t3,\n\t\t10\n\t]\n}");
 104         test_stringify("{\"a\":{\"1\":1,\"2\":2},\"b\":{\"3\":[null,false,true,\"\\f\"]}}",
 105                                    "{\n\t\"a\": {\n\t\t\"1\": 1,\n\t\t\"2\": 2\n\t},\n\t\"b\": {\n\t\t\"3\": [\n\t\t\tnull,\n\t\t\tfalse,\n\t\t\ttrue,\n\t\t\t\"\\f\"\n\t\t]\n\t}\n}");
 106
 107         return exit_status();
 108 }