1 /*
2  * Copyright (c) 2020, 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
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7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
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22  */
23 
24 /*
25  * @test
26  * @run testng ConvertTest
27  */
28 package test.java.lang.constant;
29 
30 import org.testng.annotations.DataProvider;
31 import org.testng.annotations.Test;
32 
33 import java.lang.invoke.ConstantBootstraps;
34 import java.math.BigInteger;
35 
36 import static org.testng.Assert.assertEquals;
37 
38 public class ConvertTest {
39 
40     @DataProvider
cceInputs()41     public static Object[][] cceInputs() {
42         return new Object[][]{
43             { void.class, null },
44             { Integer.class, "a" },
45             { int.class, BigInteger.ZERO },
46         };
47     }
48 
49     @Test(dataProvider = "cceInputs", expectedExceptions = ClassCastException.class)
testBadConversion(Class<?> dstType, Object value)50     public void testBadConversion(Class<?> dstType, Object value) {
51         ConstantBootstraps.explicitCast(null, null, dstType, value);
52     }
53 
54     @DataProvider
goodInputs()55     public static Object[][] goodInputs() {
56         Object o = new Object();
57         return new Object[][]{
58             { Object.class, null, null },
59             { Object.class, o, o },
60             { String.class, "abc", "abc" },
61             { short.class, 10, (short) 10 },
62             { int.class, (short) 10, 10 },
63             { boolean.class, 1, true },
64             { boolean.class, 2, false },
65             { int.class, true, 1 },
66             { int.class, false, 0 },
67             { int.class, 10, 10 },
68             { Integer.class, 10, 10 },
69             { Object.class, 10, 10 },
70             { Number.class, 10, 10 },
71         };
72     }
73 
74     @Test(dataProvider = "goodInputs")
testSuccess(Class<?> dstType, Object value, Object expected)75     public void testSuccess(Class<?> dstType, Object value, Object expected) {
76         Object actual = ConstantBootstraps.explicitCast(null, null, dstType, value);
77         assertEquals(actual, expected);
78     }
79 
80 }
81