xref: /third_party/cJSON/tests/readme_examples.c (revision 9750e409) 
1/*
2  Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
3
4  Permission is hereby granted, free of charge, to any person obtaining a copy
5  of this software and associated documentation files (the "Software"), to deal
6  in the Software without restriction, including without limitation the rights
7  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8  copies of the Software, and to permit persons to whom the Software is
9  furnished to do so, subject to the following conditions:
10
11  The above copyright notice and this permission notice shall be included in
12  all copies or substantial portions of the Software.
13
14  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20  THE SOFTWARE.
21*/
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26
27#include "unity/examples/unity_config.h"
28#include "unity/src/unity.h"
29#include "common.h"
30
31static const char *json = "{\n\
32\t\"name\":\t\"Awesome 4K\",\n\
33\t\"resolutions\":\t[{\n\
34\t\t\t\"width\":\t1280,\n\
35\t\t\t\"height\":\t720\n\
36\t\t}, {\n\
37\t\t\t\"width\":\t1920,\n\
38\t\t\t\"height\":\t1080\n\
39\t\t}, {\n\
40\t\t\t\"width\":\t3840,\n\
41\t\t\t\"height\":\t2160\n\
42\t\t}]\n\
43}";
44
45static char* create_monitor(void)
46{
47    const unsigned int resolution_numbers[3][2] = {
48        {1280, 720},
49        {1920, 1080},
50        {3840, 2160}
51    };
52    char *string = NULL;
53    cJSON *name = NULL;
54    cJSON *resolutions = NULL;
55    cJSON *resolution = NULL;
56    cJSON *width = NULL;
57    cJSON *height = NULL;
58    size_t index = 0;
59
60    cJSON *monitor = cJSON_CreateObject();
61    if (monitor == NULL)
62    {
63        goto end;
64    }
65
66    name = cJSON_CreateString("Awesome 4K");
67    if (name == NULL)
68    {
69        goto end;
70    }
71    /* after creation was successful, immediately add it to the monitor,
72     * thereby transferring ownership of the pointer to it */
73    cJSON_AddItemToObject(monitor, "name", name);
74
75    resolutions = cJSON_CreateArray();
76    if (resolutions == NULL)
77    {
78        goto end;
79    }
80    cJSON_AddItemToObject(monitor, "resolutions", resolutions);
81
82    for (index = 0; index < (sizeof(resolution_numbers) / (2 * sizeof(int))); ++index)
83    {
84        resolution = cJSON_CreateObject();
85        if (resolution == NULL)
86        {
87            goto end;
88        }
89        cJSON_AddItemToArray(resolutions, resolution);
90
91        width = cJSON_CreateNumber(resolution_numbers[index][0]);
92        if (width == NULL)
93        {
94            goto end;
95        }
96        cJSON_AddItemToObject(resolution, "width", width);
97
98        height = cJSON_CreateNumber(resolution_numbers[index][1]);
99        if (height == NULL)
100        {
101            goto end;
102        }
103        cJSON_AddItemToObject(resolution, "height", height);
104    }
105
106    string = cJSON_Print(monitor);
107    if (string == NULL)
108    {
109        fprintf(stderr, "Failed to print monitor.\n");
110    }
111
112end:
113    cJSON_Delete(monitor);
114    return string;
115}
116
117static char *create_monitor_with_helpers(void)
118{
119    const unsigned int resolution_numbers[3][2] = {
120        {1280, 720},
121        {1920, 1080},
122        {3840, 2160}
123    };
124    char *string = NULL;
125    cJSON *resolutions = NULL;
126    size_t index = 0;
127
128    cJSON *monitor = cJSON_CreateObject();
129
130    if (cJSON_AddStringToObject(monitor, "name", "Awesome 4K") == NULL)
131    {
132        goto end;
133    }
134
135    resolutions = cJSON_AddArrayToObject(monitor, "resolutions");
136    if (resolutions == NULL)
137    {
138        goto end;
139    }
140
141    for (index = 0; index < (sizeof(resolution_numbers) / (2 * sizeof(int))); ++index)
142    {
143        cJSON *resolution = cJSON_CreateObject();
144
145        if (cJSON_AddNumberToObject(resolution, "width", resolution_numbers[index][0]) == NULL)
146        {
147            goto end;
148        }
149
150        if(cJSON_AddNumberToObject(resolution, "height", resolution_numbers[index][1]) == NULL)
151        {
152            goto end;
153        }
154
155        cJSON_AddItemToArray(resolutions, resolution);
156    }
157
158    string = cJSON_Print(monitor);
159    if (string == NULL) {
160        fprintf(stderr, "Failed to print monitor.\n");
161    }
162
163end:
164    cJSON_Delete(monitor);
165    return string;
166}
167
168/* return 1 if the monitor supports full hd, 0 otherwise */
169static int supports_full_hd(const char * const monitor)
170{
171    const cJSON *resolution = NULL;
172    const cJSON *resolutions = NULL;
173    const cJSON *name = NULL;
174    int status = 0;
175    cJSON *monitor_json = cJSON_Parse(monitor);
176    if (monitor_json == NULL)
177    {
178        const char *error_ptr = cJSON_GetErrorPtr();
179        if (error_ptr != NULL)
180        {
181            fprintf(stderr, "Error before: %s\n", error_ptr);
182        }
183        status = 0;
184        goto end;
185    }
186
187    name = cJSON_GetObjectItemCaseSensitive(monitor_json, "name");
188    if (cJSON_IsString(name) && (name->valuestring != NULL))
189    {
190        printf("Checking monitor \"%s\"\n", name->valuestring);
191    }
192
193    resolutions = cJSON_GetObjectItemCaseSensitive(monitor_json, "resolutions");
194    cJSON_ArrayForEach(resolution, resolutions)
195    {
196        cJSON *width = cJSON_GetObjectItemCaseSensitive(resolution, "width");
197        cJSON *height = cJSON_GetObjectItemCaseSensitive(resolution, "height");
198
199        if (!cJSON_IsNumber(width) || !cJSON_IsNumber(height))
200        {
201            status = 0;
202            goto end;
203        }
204
205        if (compare_double(width->valuedouble, 1920) && compare_double(height->valuedouble, 1080))
206        {
207            status = 1;
208            goto end;
209        }
210    }
211
212end:
213    cJSON_Delete(monitor_json);
214    return status;
215}
216
217static void create_monitor_should_create_a_monitor(void)
218{
219    char *monitor = create_monitor();
220
221    TEST_ASSERT_EQUAL_STRING(monitor, json);
222
223    free(monitor);
224}
225
226static void create_monitor_with_helpers_should_create_a_monitor(void)
227{
228    char *monitor = create_monitor_with_helpers();
229
230    TEST_ASSERT_EQUAL_STRING(json, monitor);
231
232    free(monitor);
233}
234
235static void supports_full_hd_should_check_for_full_hd_support(void)
236{
237    static const char *monitor_without_hd = "{\n\
238\t\t\"name\": \"lame monitor\",\n\
239\t\t\"resolutions\":\t[{\n\
240\t\t\t\"width\":\t640,\n\
241\t\t\t\"height\":\t480\n\
242\t\t}]\n\
243}";
244
245    TEST_ASSERT(supports_full_hd(json));
246    TEST_ASSERT_FALSE(supports_full_hd(monitor_without_hd));
247}
248
249int CJSON_CDECL main(void)
250{
251    UNITY_BEGIN();
252
253    RUN_TEST(create_monitor_should_create_a_monitor);
254    RUN_TEST(create_monitor_with_helpers_should_create_a_monitor);
255    RUN_TEST(supports_full_hd_should_check_for_full_hd_support);
256
257    return UNITY_END();
258}
259