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1   /**
2    * Copyright (c) 2013-2022, jcabi.com
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions
7    * are met: 1) Redistributions of source code must retain the above
8    * copyright notice, this list of conditions and the following
9    * disclaimer. 2) Redistributions in binary form must reproduce the above
10   * copyright notice, this list of conditions and the following
11   * disclaimer in the documentation and/or other materials provided
12   * with the distribution. 3) Neither the name of the jcabi.com nor
13   * the names of its contributors may be used to endorse or promote
14   * products derived from this software without specific prior written
15   * permission.
16   *
17   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
19   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21   * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28   * OF THE POSSIBILITY OF SUCH DAMAGE.
29   */
30  package com.jcabi.github;
31  
32  import java.nio.charset.StandardCharsets;
33  import javax.json.Json;
34  import javax.json.JsonArray;
35  import javax.json.JsonObject;
36  import org.apache.commons.io.IOUtils;
37  import org.hamcrest.MatcherAssert;
38  import org.hamcrest.Matchers;
39  import org.junit.Test;
40  
41  /**
42   * Test case for {@link SmartJsonTest}.
43   * @author Yegor Bugayenko (yegor256@gmail.com)
44   * @version $Id: ab2faec5cf471f2c1ffa2402fde90419818549f5 $
45   * @checkstyle MultipleStringLiterals (500 lines)
46   */
47  public final class SmartJsonTest {
48  
49      /**
50       * SmartJson can fetch data from JSON.
51       * @throws Exception If some problem inside
52       */
53      @Test
54      public void fetchesStringFromJson() throws Exception {
55          MatcherAssert.assertThat(
56              new SmartJson(
57                  SmartJsonTest.json("{\"first\": \"a\"}")
58              ).text("first"),
59              Matchers.equalTo("a")
60          );
61      }
62  
63      /**
64       * SmartJson can fetch number from JSON.
65       * @throws Exception If some problem inside
66       */
67      @Test
68      public void fetchesNumberFromJson() throws Exception {
69          MatcherAssert.assertThat(
70              new SmartJson(
71                  SmartJsonTest.json("{\"second\": 1}")
72              ).number("second"),
73              Matchers.equalTo(1)
74          );
75      }
76  
77      /**
78       * SmartJson can fetch an array from JSON.
79       * @throws Exception If some problem inside
80       */
81      @Test
82      public void fetchesArrayFromJson() throws Exception {
83          MatcherAssert.assertThat(
84              new SmartJson(
85                  SmartJsonTest.json("{\"arr\": [1, 2]}")
86              ).value("arr", JsonArray.class),
87              Matchers.hasSize(2)
88          );
89      }
90  
91      /**
92       * SmartJson can fetch an object from JSON.
93       * @throws Exception If some problem inside
94       */
95      @Test
96      public void fetchesObjectFromJson() throws Exception {
97          MatcherAssert.assertThat(
98              new SmartJson(
99                  SmartJsonTest.json("{\"o\": {\"foo\": [1]}}")
100             ).value("o", JsonObject.class).getJsonArray("foo"),
101             Matchers.hasSize(1)
102         );
103     }
104 
105     /**
106      * SmartJson can check for not null keys.
107      * @throws Exception If some problem inside
108      */
109     @Test
110     public void checksNotNullKeyNotPresent() throws Exception {
111         MatcherAssert.assertThat(
112             new SmartJson(
113                 SmartJsonTest.json("{\"first\": \"a\"}")
114             ).hasNotNull("second"),
115             Matchers.equalTo(false)
116         );
117     }
118 
119     /**
120      * SmartJson can check for not null keys.
121      * @throws Exception If some problem inside
122      */
123     @Test
124     public void checksNotNullKeyPresentAndNull() throws Exception {
125         MatcherAssert.assertThat(
126             new SmartJson(
127                 SmartJsonTest.json("{\"first\": null}")
128             ).hasNotNull("first"),
129             Matchers.equalTo(false)
130         );
131     }
132 
133     /**
134      * SmartJson can check for not null keys.
135      * @throws Exception If some problem inside
136      */
137     @Test
138     public void checksNotNullKeyPresentAndNotNull() throws Exception {
139         MatcherAssert.assertThat(
140             new SmartJson(
141                 SmartJsonTest.json("{\"first\": \"a\"}")
142             ).hasNotNull("first"),
143             Matchers.equalTo(true)
144         );
145     }
146 
147     /**
148      * Make a readable with this JSON content.
149      * @param txt JSON content
150      * @return Readable
151      */
152     private static JsonReadable json(final String txt) {
153         return new JsonReadable() {
154             @Override
155             public JsonObject json() {
156                 return Json.createReader(
157                     IOUtils.toInputStream(txt, StandardCharsets.UTF_8)
158                 ).readObject();
159             }
160         };
161     }
162 
163 }