json-glib/tests/path.c

   1 #include <string.h>
   2 #include <glib.h>
   3 #include <json-glib/json-glib.h>
   4
   5 static const char *test_json =
   6 "{ \"store\": {"
   7 "    \"book\": [ "
   8 "      { \"category\": \"reference\","
   9 "        \"author\": \"Nigel Rees\","
  10 "        \"title\": \"Sayings of the Century\","
  11 "        \"price\": \"8.95\""
  12 "      },"
  13 "      { \"category\": \"fiction\","
  14 "        \"author\": \"Evelyn Waugh\","
  15 "        \"title\": \"Sword of Honour\","
  16 "        \"price\": \"12.99\""
  17 "      },"
  18 "      { \"category\": \"fiction\","
  19 "        \"author\": \"Herman Melville\","
  20 "        \"title\": \"Moby Dick\","
  21 "        \"isbn\": \"0-553-21311-3\","
  22 "        \"price\": \"8.99\""
  23 "      },"
  24 "      { \"category\": \"fiction\","
  25 "        \"author\": \"J. R. R. Tolkien\","
  26 "        \"title\": \"The Lord of the Rings\","
  27 "        \"isbn\": \"0-395-19395-8\","
  28 "        \"price\": \"22.99\""
  29 "      }"
  30 "    ],"
  31 "    \"bicycle\": {"
  32 "      \"color\": \"red\","
  33 "      \"price\": \"19.95\""
  34 "    }"
  35 "  }"
  36 "}";
  37
  38 static const struct {
  39   const char *exp;
  40   const char *res;
  41 } test_expressions[] = {
  42   {
  43     "$.store.book[0].title",
  44     "[\"Sayings of the Century\"]"
  45   },
  46   {
  47     "$['store']['book'][0]['title']",
  48     "[\"Sayings of the Century\"]"
  49   },
  50   {
  51     "$.store.book[*].author",
  52     "[\"Nigel Rees\",\"Evelyn Waugh\",\"Herman Melville\",\"J. R. R. Tolkien\"]"
  53   },
  54   {
  55     "$..author",
  56     "[\"Nigel Rees\",\"Evelyn Waugh\",\"Herman Melville\",\"J. R. R. Tolkien\"]"
  57   },
  58   {
  59     "$.store.*",
  60     NULL
  61   },
  62   {
  63     "$.store..price",
  64     "[\"8.95\",\"12.99\",\"8.99\",\"22.99\",\"19.95\"]"
  65   },
  66   {
  67     "$..book[2]",
  68     "[{\"category\":\"fiction\",\"author\":\"Herman Melville\",\"title\":\"Moby Dick\",\"isbn\":\"0-553-21311-3\",\"price\":\"8.99\"}]"
  69   },
  70   {
  71     "$..book[-1:]",
  72     "[{\"category\":\"fiction\",\"author\":\"J. R. R. Tolkien\",\"title\":\"The Lord of the Rings\",\"isbn\":\"0-395-19395-8\",\"price\":\"22.99\"}]"
  73   },
  74   {
  75     "$..book[0,1]",
  76     "[{\"category\":\"reference\",\"author\":\"Nigel Rees\",\"title\":\"Sayings of the Century\",\"price\":\"8.95\"},{\"category\":\"fiction\",\"author\":\"Evelyn Waugh\",\"title\":\"Sword of Honour\",\"price\":\"12.99\"}]"
  77   },
  78   {
  79     "$..book[:2]",
  80     "[{\"category\":\"reference\",\"author\":\"Nigel Rees\",\"title\":\"Sayings of the Century\",\"price\":\"8.95\"},{\"category\":\"fiction\",\"author\":\"Evelyn Waugh\",\"title\":\"Sword of Honour\",\"price\":\"12.99\"}]"
  81   },
  82 };
  83
  84 static void
  85 test_expression (void)
  86 {
  87   JsonPath *path = json_path_new ();
  88   int i;
  89
  90   for (i = 0; i < G_N_ELEMENTS (test_expressions); i++)
  91     {
  92       const char *expr = test_expressions[i].exp;
  93       GError *error = NULL;
  94
  95       g_assert (json_path_compile (path, expr, &error));
  96       g_assert_no_error (error);
  97     }
  98
  99   g_object_unref (path);
 100 }
 101
 102 static void
 103 test_match (void)
 104 {
 105   JsonParser *parser = json_parser_new ();
 106   JsonGenerator *gen = json_generator_new ();
 107   JsonPath *path = json_path_new ();
 108   JsonNode *root;
 109   int i;
 110
 111   json_parser_load_from_data (parser, test_json, -1, NULL);
 112   root = json_parser_get_root (parser);
 113
 114   for (i = 0; i < G_N_ELEMENTS (test_expressions); i++)
 115     {
 116       const char *expr = test_expressions[i].exp;
 117       const char *res  = test_expressions[i].res;
 118       JsonNode *matches;
 119       char *str;
 120
 121       if (res == NULL || *res == '\0')
 122         continue;
 123
 124       g_assert (json_path_compile (path, expr, NULL));
 125
 126       matches = json_path_match (path, root);
 127       g_assert (JSON_NODE_HOLDS_ARRAY (matches));
 128
 129       json_generator_set_root (gen, matches);
 130       str = json_generator_to_data (gen, NULL);
 131
 132       if (g_test_verbose ())
 133         {
 134           g_print ("* expr[%02d]: '%s' =>\n"
 135                    "- result:   %s\n"
 136                    "- expected: %s\n",
 137                    i, expr, str, res);
 138         }
 139
 140       g_assert_cmpstr (str, ==, res);
 141
 142       g_free (str);
 143       json_node_free (matches);
 144     }
 145
 146   g_object_unref (parser);
 147   g_object_unref (path);
 148   g_object_unref (gen);
 149 }
 150
 151 int
 152 main (int   argc,
 153       char *argv[])
 154 {
 155   g_type_init ();
 156   g_test_init (&argc, &argv, NULL);
 157   g_test_bug_base ("http://bugzilla.gnome.org/show_bug.cgi?id=");
 158
 159   g_test_add_func ("/path/expressions", test_expression);
 160   g_test_add_func ("/path/match", test_match);
 161
 162   return g_test_run ();
 163 }