1 /*
2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.javafx.binding;
27
28 import static org.junit.Assert.*;
29
30 import javafx.beans.WeakListener;
31 import org.junit.Test;
32
33 public class ExpressionHelperBaseTest {
34
35 private static final Object listener = new Object();
36 private static final Object listener2 = new Object();
37
38 private static final WeakListener validWeakListener = () -> false;
39
40 private static final WeakListener gcedWeakListener = () -> true;
41
42 @Test
43 public void testEmptyArray() {
44 Object[] array = new Object[0];
45 assertEquals(0, ExpressionHelperBase.trim(0, array));
46 assertArrayEquals(new Object[0], array);
47
48 array = new Object[1];
49 assertEquals(0, ExpressionHelperBase.trim(0, array));
50 assertArrayEquals(new Object[1], array);
51 }
52
53 @Test
54 public void testSingleElement() {
55 Object[] array = new Object[] {listener};
56 assertEquals(1, ExpressionHelperBase.trim(1, array));
57 assertArrayEquals(new Object[] {listener}, array);
58
59 array = new Object[] {validWeakListener};
60 assertEquals(1, ExpressionHelperBase.trim(1, array));
61 assertArrayEquals(new Object[] {validWeakListener}, array);
62
63 array = new Object[] {gcedWeakListener};
64 assertEquals(0, ExpressionHelperBase.trim(1, array));
65 assertArrayEquals(new Object[] {null}, array);
66
67 array = new Object[] {listener, null};
68 assertEquals(1, ExpressionHelperBase.trim(1, array));
69 assertArrayEquals(new Object[] {listener, null}, array);
70
71 array = new Object[] {validWeakListener, null};
72 assertEquals(1, ExpressionHelperBase.trim(1, array));
73 assertArrayEquals(new Object[] {validWeakListener, null}, array);
74
75 array = new Object[] {gcedWeakListener, null};
76 assertEquals(0, ExpressionHelperBase.trim(1, array));
77 assertArrayEquals(new Object[] {null, null}, array);
78 }
79
80 @Test
81 public void testMultipleElements() {
82 Object[] array = new Object[] {validWeakListener, listener, listener2};
83 assertEquals(3, ExpressionHelperBase.trim(3, array));
84 assertArrayEquals(new Object[] {validWeakListener, listener, listener2}, array);
85
86 array = new Object[] {listener, validWeakListener, listener2};
87 assertEquals(3, ExpressionHelperBase.trim(3, array));
88 assertArrayEquals(new Object[] {listener, validWeakListener, listener2}, array);
89
90 array = new Object[] {listener, listener2, validWeakListener};
91 assertEquals(3, ExpressionHelperBase.trim(3, array));
92 assertArrayEquals(new Object[] {listener, listener2, validWeakListener}, array);
93
94 array = new Object[] {validWeakListener, listener, listener2, null};
95 assertEquals(3, ExpressionHelperBase.trim(3, array));
96 assertArrayEquals(new Object[] {validWeakListener, listener, listener2, null}, array);
97
98 array = new Object[] {listener, validWeakListener, listener2, null};
99 assertEquals(3, ExpressionHelperBase.trim(3, array));
100 assertArrayEquals(new Object[] {listener, validWeakListener, listener2, null}, array);
101
102 array = new Object[] {listener, listener2, validWeakListener, null};
103 assertEquals(3, ExpressionHelperBase.trim(3, array));
104 assertArrayEquals(new Object[] {listener, listener2, validWeakListener, null}, array);
105
106
107 array = new Object[] {gcedWeakListener, validWeakListener, listener};
108 assertEquals(2, ExpressionHelperBase.trim(3, array));
109 assertArrayEquals(new Object[] {validWeakListener, listener, null}, array);
110
111 array = new Object[] {gcedWeakListener, listener, validWeakListener};
112 assertEquals(2, ExpressionHelperBase.trim(3, array));
113 assertArrayEquals(new Object[] {listener, validWeakListener, null}, array);
114
115 array = new Object[] {gcedWeakListener, validWeakListener, listener, null};
116 assertEquals(2, ExpressionHelperBase.trim(3, array));
117 assertArrayEquals(new Object[] {validWeakListener, listener, null, null}, array);
118
119 array = new Object[] {gcedWeakListener, listener, validWeakListener, null};
120 assertEquals(2, ExpressionHelperBase.trim(3, array));
121 assertArrayEquals(new Object[] {listener, validWeakListener, null, null}, array);
122
123
124 array = new Object[] {validWeakListener, gcedWeakListener, listener};
125 assertEquals(2, ExpressionHelperBase.trim(3, array));
126 assertArrayEquals(new Object[] {validWeakListener, listener, null}, array);
127
128 array = new Object[] {listener, gcedWeakListener, validWeakListener};
129 assertEquals(2, ExpressionHelperBase.trim(3, array));
130 assertArrayEquals(new Object[] {listener, validWeakListener, null}, array);
131
132 array = new Object[] {validWeakListener, gcedWeakListener, listener, null};
133 assertEquals(2, ExpressionHelperBase.trim(3, array));
134 assertArrayEquals(new Object[] {validWeakListener, listener, null, null}, array);
135
136 array = new Object[] {listener, gcedWeakListener, validWeakListener, null};
137 assertEquals(2, ExpressionHelperBase.trim(3, array));
138 assertArrayEquals(new Object[] {listener, validWeakListener, null, null}, array);
139
140
141 array = new Object[] {validWeakListener, listener, gcedWeakListener};
142 assertEquals(2, ExpressionHelperBase.trim(3, array));
143 assertArrayEquals(new Object[] {validWeakListener, listener, null}, array);
144
145 array = new Object[] {listener, validWeakListener, gcedWeakListener};
146 assertEquals(2, ExpressionHelperBase.trim(3, array));
147 assertArrayEquals(new Object[] {listener, validWeakListener, null}, array);
148
149 array = new Object[] {validWeakListener, listener, gcedWeakListener, null};
150 assertEquals(2, ExpressionHelperBase.trim(3, array));
151 assertArrayEquals(new Object[] {validWeakListener, listener, null, null}, array);
152
153 array = new Object[] {listener, validWeakListener, gcedWeakListener, null};
154 assertEquals(2, ExpressionHelperBase.trim(3, array));
155 assertArrayEquals(new Object[] {listener, validWeakListener, null, null}, array);
156
157
158 array = new Object[] {gcedWeakListener, gcedWeakListener};
159 assertEquals(0, ExpressionHelperBase.trim(2, array));
160 assertArrayEquals(new Object[] {null, null}, array);
161
162 array = new Object[] {gcedWeakListener, gcedWeakListener, null};
163 assertEquals(0, ExpressionHelperBase.trim(2, array));
164 assertArrayEquals(new Object[] {null, null, null}, array);
165 }
166
167
168 }