1 /*
2  * Copyright (C) 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *       http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.core.database
18 
19 import android.database.Cursor
20 import android.database.MatrixCursor
21 import androidx.test.filters.SmallTest
22 import org.junit.Assert.assertNull
23 import org.junit.Test
24 
25 @SmallTest
26 class CursorTest {
27     @Test
blobOrNullByIndexnull28     fun blobOrNullByIndex() {
29         val cursor = scalarCursor(null)
30         val blob = cursor.getBlobOrNull(0)
31         assertNull(blob)
32     }
33 
34     @Test
doubleOrNullByIndexnull35     fun doubleOrNullByIndex() {
36         val cursor = scalarCursor(null)
37         val double = cursor.getDoubleOrNull(0)
38         assertNull(double)
39     }
40 
41     @Test
floatOrNullByIndexnull42     fun floatOrNullByIndex() {
43         val cursor = scalarCursor(null)
44         val float = cursor.getFloatOrNull(0)
45         assertNull(float)
46     }
47 
48     @Test
intOrNullByIndexnull49     fun intOrNullByIndex() {
50         val cursor = scalarCursor(null)
51         val int = cursor.getIntOrNull(0)
52         assertNull(int)
53     }
54 
55     @Test
longOrNullByIndexnull56     fun longOrNullByIndex() {
57         val cursor = scalarCursor(null)
58         val long = cursor.getLongOrNull(0)
59         assertNull(long)
60     }
61 
62     @Test
shortOrNullByIndexnull63     fun shortOrNullByIndex() {
64         val cursor = scalarCursor(null)
65         val short = cursor.getShortOrNull(0)
66         assertNull(short)
67     }
68 
69     @Test
stringOrNullByIndexnull70     fun stringOrNullByIndex() {
71         val cursor = scalarCursor(null)
72         val string = cursor.getStringOrNull(0)
73         assertNull(string)
74     }
75 
scalarCursornull76     private fun scalarCursor(item: Any?): Cursor =
77         MatrixCursor(arrayOf("data")).apply {
78             addRow(arrayOf(item))
79             moveToFirst() // Prepare for consumers to read.
80         }
81 }
82