1 /* json.c - unit test for JSON partsing into fixed-extent structures
3 * This file is Copyright (c) 2010 by the GPSD project
4 * BSD terms apply: see the file COPYING in the distribution root for details.
18 static void assert_case(int num, int status)
21 (void)fprintf(stderr, "case %d FAILED, status %d (%s).\n", num,
22 status, json_error_string(status));
27 static void assert_string(char *attr, char *fld, char *val)
29 if (strcmp(fld, val)) {
31 "'%s' string attribute eval failed, value = %s.\n",
37 static void assert_integer(char *attr, int fld, int val)
41 "'%s' integer attribute eval failed, value = %d.\n",
47 static void assert_uinteger(char *attr, uint fld, uint val)
51 "'%s' integer attribute eval failed, value = %u.\n",
57 static void assert_boolean(char *attr, bool fld, bool val)
62 "'%s' boolean attribute eval failed, value = %s.\n",
63 attr, fld ? "true" : "false");
70 * Floating point comparisons are iffy, but at least if any of these fail
71 * the output will make it clear whether it was a precision issue
73 static void assert_real(char *attr, double fld, double val)
77 "'%s' real attribute eval failed, value = %f.\n", attr,
83 /*@ -fullinitblock @*/
85 static struct gps_data_t gpsdata;
87 /* Case 1: TPV report */
90 static const char json_str1[] = "{\"class\":\"TPV\",\
91 \"device\":\"GPS#1\",\"tag\":\"MID2\", \
92 \"time\":1119197561.890,\"lon\":46.498203637,\"lat\":7.568074350,\
93 \"alt\":1327.780,\"epx\":21.000,\"epy\":23.000,\"epv\":124.484,\"mode\":3}";
95 /* Case 2: SKY report */
97 static const char *json_str2 = "{\"class\":\"SKY\",\
98 \"tag\":\"MID4\",\"time\":1119197562.890, \
100 {\"PRN\":10,\"el\":45,\"az\":196,\"ss\":34,\"used\":true},\
101 {\"PRN\":29,\"el\":67,\"az\":310,\"ss\":40,\"used\":true},\
102 {\"PRN\":28,\"el\":59,\"az\":108,\"ss\":42,\"used\":true},\
103 {\"PRN\":26,\"el\":51,\"az\":304,\"ss\":43,\"used\":true},\
104 {\"PRN\":8,\"el\":44,\"az\":58,\"ss\":41,\"used\":true},\
105 {\"PRN\":27,\"el\":16,\"az\":66,\"ss\":39,\"used\":true},\
106 {\"PRN\":21,\"el\":10,\"az\":301,\"ss\":0,\"used\":false}]}";
108 /* Case 3: String list syntax */
110 static const char *json_str3 = "[\"foo\",\"bar\",\"baz\"]";
112 static char *stringptrs[3];
113 static char stringstore[256];
114 static int stringcount;
117 static const struct json_array_t json_array_3 = {
118 .element_type = t_string,
119 .arr.strings.ptrs = stringptrs,
120 .arr.strings.store = stringstore,
121 .arr.strings.storelen = sizeof(stringstore),
122 .count = &stringcount,
123 .maxlen = sizeof(stringptrs)/sizeof(stringptrs[0]),
127 /* Case 4: test defaulting of unspecified attributes */
129 static const char *json_str4 = "{\"flag1\":true,\"flag2\":false}";
131 static bool flag1, flag2;
132 static double dftreal;
133 static int dftinteger;
134 static unsigned int dftuinteger;
136 static const struct json_attr_t json_attrs_4[] = {
137 {"dftint", t_integer, .addr.integer = &dftinteger, .dflt.integer = -5},
138 {"dftuint", t_integer, .addr.uinteger = &dftuinteger, .dflt.uinteger = 10},
139 {"dftreal", t_real, .addr.real = &dftreal, .dflt.real = 23.17},
140 {"flag1", t_boolean, .addr.boolean = &flag1,},
141 {"flag2", t_boolean, .addr.boolean = &flag2,},
145 /* Case 5: test DEVICE parsing */
147 static const char *json_str5 = "{\"class\":\"DEVICE\",\
148 \"path\":\"/dev/ttyUSB0\",\
150 \"driver\":\"Foonly\",\"subtype\":\"Foonly Frob\"\
153 /* Case 6: test parsing of subobject list into array of structures */
155 static const char *json_str6 = "{\"parts\":[\
156 {\"name\":\"Urgle\", \"flag\":true, \"count\":3},\
157 {\"name\":\"Burgle\",\"flag\":false,\"count\":1},\
158 {\"name\":\"Witter\",\"flag\":true, \"count\":4},\
159 {\"name\":\"Thud\", \"flag\":false,\"count\":1}]}";
161 struct dumbstruct_t {
166 static struct dumbstruct_t dumbstruck[5];
167 static int dumbcount;
170 static const struct json_attr_t json_attrs_6_subtype[] = {
171 {"name", t_string, .addr.offset = offsetof(struct dumbstruct_t, name),
173 {"flag", t_boolean, .addr.offset = offsetof(struct dumbstruct_t, flag),},
174 {"count", t_integer, .addr.offset = offsetof(struct dumbstruct_t, count),},
178 static const struct json_attr_t json_attrs_6[] = {
179 {"parts", t_array, .addr.array.element_type = t_structobject,
180 .addr.array.arr.objects.base = (char*)&dumbstruck,
181 .addr.array.arr.objects.stride = sizeof(struct dumbstruct_t),
182 .addr.array.arr.objects.subtype = json_attrs_6_subtype,
183 .addr.array.count = &dumbcount,
184 .addr.array.maxlen = sizeof(dumbstruck)/sizeof(dumbstruck[0])},
189 /* Case 7: test parsing of version response */
191 static const char *json_str7 = "{\"class\":\"VERSION\",\
192 \"release\":\"2.40dev\",\"rev\":\"dummy-revision\",\
193 \"proto_major\":3,\"proto_minor\":1}";
195 /* Case 8: test parsing arrays of enumerated types */
197 static const char *json_str8 = "{\"fee\":\"FOO\",\"fie\":\"BAR\",\"foe\":\"BAZ\"}";
198 static const struct json_enum_t enum_table[] = {
199 {"BAR", 6}, {"FOO", 3}, {"BAZ", 14}, {NULL}
202 static int fee, fie, foe;
203 static const struct json_attr_t json_attrs_8[] = {
204 {"fee", t_integer, .addr.integer = &fee, .map=enum_table},
205 {"fie", t_integer, .addr.integer = &fie, .map=enum_table},
206 {"foe", t_integer, .addr.integer = &foe, .map=enum_table},
209 /*@ +fullinitblock @*/
212 int main(int argc UNUSED, char *argv[]UNUSED)
216 (void)fprintf(stderr, "JSON unit test ");
218 status = libgps_json_unpack(json_str1, &gpsdata, NULL);
219 assert_case(1, status);
220 assert_string("device", gpsdata.dev.path, "GPS#1");
221 assert_string("tag", gpsdata.tag, "MID2");
222 assert_integer("mode", gpsdata.fix.mode, 3);
223 assert_real("time", gpsdata.fix.time, 1119197561.890);
224 assert_real("lon", gpsdata.fix.longitude, 46.498203637);
225 assert_real("lat", gpsdata.fix.latitude, 7.568074350);
227 status = libgps_json_unpack(json_str2, &gpsdata, NULL);
228 assert_case(2, status);
229 assert_string("tag", gpsdata.tag, "MID4");
230 assert_integer("used", gpsdata.satellites_used, 6);
231 assert_integer("PRN[0]", gpsdata.PRN[0], 10);
232 assert_integer("el[0]", gpsdata.elevation[0], 45);
233 assert_integer("az[0]", gpsdata.azimuth[0], 196);
234 assert_real("ss[0]", gpsdata.ss[0], 34);
235 assert_integer("used[0]", gpsdata.used[0], 10);
236 assert_integer("used[5]", gpsdata.used[5], 27);
237 assert_integer("PRN[6]", gpsdata.PRN[6], 21);
238 assert_integer("el[6]", gpsdata.elevation[6], 10);
239 assert_integer("az[6]", gpsdata.azimuth[6], 301);
240 assert_real("ss[6]", gpsdata.ss[6], 0);
242 status = json_read_array(json_str3, &json_array_3, NULL);
243 assert_case(3, status);
244 assert(stringcount == 3);
245 assert(strcmp(stringptrs[0], "foo") == 0);
246 assert(strcmp(stringptrs[1], "bar") == 0);
247 assert(strcmp(stringptrs[2], "baz") == 0);
249 status = json_read_object(json_str4, json_attrs_4, NULL);
250 assert_case(4, status);
251 assert_integer("dftint", dftinteger, -5); /* did the default work? */
252 assert_uinteger("dftuint", dftuinteger, 10); /* did the default work? */
253 assert_real("dftreal", dftreal, 23.17); /* did the default work? */
254 assert_boolean("flag1", flag1, true);
255 assert_boolean("flag2", flag2, false);
257 status = libgps_json_unpack(json_str5, &gpsdata, NULL);
258 assert_case(5, status);
259 assert_string("path", gpsdata.dev.path, "/dev/ttyUSB0");
260 assert_integer("flags", gpsdata.dev.flags, 5);
261 assert_string("driver", gpsdata.dev.driver, "Foonly");
263 status = json_read_object(json_str6, json_attrs_6, NULL);
264 assert_case(6, status);
265 assert_integer("dumbcount", dumbcount, 4);
266 assert_string("dumbstruck[0].name", dumbstruck[0].name, "Urgle");
267 assert_string("dumbstruck[1].name", dumbstruck[1].name, "Burgle");
268 assert_string("dumbstruck[2].name", dumbstruck[2].name, "Witter");
269 assert_string("dumbstruck[3].name", dumbstruck[3].name, "Thud");
270 assert_boolean("dumbstruck[0].flag", dumbstruck[0].flag, true);
271 assert_boolean("dumbstruck[1].flag", dumbstruck[1].flag, false);
272 assert_boolean("dumbstruck[2].flag", dumbstruck[2].flag, true);
273 assert_boolean("dumbstruck[3].flag", dumbstruck[3].flag, false);
274 assert_integer("dumbstruck[0].count", dumbstruck[0].count, 3);
275 assert_integer("dumbstruck[1].count", dumbstruck[1].count, 1);
276 assert_integer("dumbstruck[2].count", dumbstruck[2].count, 4);
277 assert_integer("dumbstruck[3].count", dumbstruck[3].count, 1);
279 status = libgps_json_unpack(json_str7, &gpsdata, NULL);
280 assert_case(7, status);
281 assert_string("release", gpsdata.version.release, "2.40dev");
282 assert_string("rev", gpsdata.version.rev, "dummy-revision");
283 assert_integer("proto_major", gpsdata.version.proto_major, 3);
284 assert_integer("proto_minor", gpsdata.version.proto_minor, 1);
286 status = json_read_object(json_str8, json_attrs_8, NULL);
287 assert_case(8, status);
288 assert_integer("fee", fee, 3);
289 assert_integer("fie", fie, 6);
290 assert_integer("foe", foe, 14);
292 (void)fprintf(stderr, "succeeded.\n");