1 /*
2 * Copyright (c) 2019, 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.
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
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @summary reflection test for records
27 * @compile --enable-preview -source ${jdk.version} RecordReflectionTest.java
28 * @run testng/othervm --enable-preview RecordReflectionTest
29 */
30
31 import java.lang.annotation.*;
32 import java.lang.reflect.*;
33 import java.util.List;
34
35 import org.testng.annotations.*;
36 import static org.testng.Assert.*;
37
38 @Test
39 public class RecordReflectionTest {
40
41 class NoRecord {}
42
43 record R1() {}
44
45 record R2(int i, int j) {}
46
47 record R3(List<String> ls) {}
48
49 record R4(R1 r1, R2 r2, R3 r3) {}
50
51 public void testIsRecord() {
52 assertFalse(NoRecord.class.isRecord());
53
54 for (Class<?> c : List.of(R1.class, R2.class, R3.class))
55 assertTrue(c.isRecord());
56 }
57
58 public void testGetComponentsNoRecord() {
59 assertTrue(NoRecord.class.getRecordComponents().length == 0);
60 }
61
62 @DataProvider(name = "reflectionData")
63 public Object[][] reflectionData() {
64 return new Object[][] {
65 new Object[] { new R1(),
66 0,
67 null,
68 null,
69 null },
70 new Object[] { new R2(1, 2),
71 2,
72 new Object[]{ 1, 2 },
73 new String[]{ "i", "j" },
74 new String[]{ "int", "int"} },
75 new Object[] { new R3(List.of("1")),
76 1,
77 new Object[]{ List.of("1") },
78 new String[]{ "ls" },
79 new String[]{ "java.util.List<java.lang.String>"} },
80 new Object[] { new R4(new R1(), new R2(6, 7), new R3(List.of("s"))),
81 3,
82 new Object[]{ new R1(), new R2(6, 7), new R3(List.of("s")) } ,
83 new String[]{ "r1", "r2", "r3" },
84 new String[]{ R1.class.toString(), R2.class.toString(), R3.class.toString()} },
85 };
86 }
87
88 @Test(dataProvider = "reflectionData")
89 public void testRecordReflection(Object recordOb,
90 int numberOfComponents,
91 Object[] values,
92 String[] names,
93 String[] signatures)
94 throws ReflectiveOperationException
95 {
96 Class<?> recordClass = recordOb.getClass();
97 assertTrue(recordClass.isRecord());
98 RecordComponent[] recordComponents = recordClass.getRecordComponents();
99 assertEquals(recordComponents.length, numberOfComponents);
100 int i = 0;
101 for (RecordComponent rc : recordComponents) {
102 assertEquals(rc.getName(), names[i]);
103 assertEquals(rc.getType(), rc.getAccessor().getReturnType());
104 assertEquals(rc.getAccessor().invoke(recordOb), values[i]);
105 assertEquals(rc.getAccessor().getGenericReturnType().toString(), signatures[i],
106 String.format("signature of method \"%s\" different from expected signature \"%s\"",
107 rc.getAccessor().getGenericReturnType(), signatures[i]));
108 i++;
109 }
110 }
111
112 record R5(String... args) {}
113 record R6(long l, String... args) {}
114 record R7(String s1, String s2, String... args) {}
115
116 @Retention(RetentionPolicy.RUNTIME)
117 @Target({ ElementType.RECORD_COMPONENT, ElementType.FIELD })
118 @interface RCA {}
119
120 record AnnotatedRec(@RCA int i) {}
121
122 public void testDeclAnnotationsInRecordComp() throws Throwable {
123 Class<?> recordClass = AnnotatedRec.class;
124 RecordComponent rc = recordClass.getRecordComponents()[0];
125 Annotation[] annos = rc.getAnnotations();
126 assertEquals(annos.length, 1);
127 assertEquals(annos[0].toString(), "@RecordReflectionTest$RCA()");
128
129 Field f = recordClass.getDeclaredField("i");
130 assertEquals(f.getAnnotations().length, 1);
131 assertEquals(f.getAnnotations()[0].toString(), annos[0].toString());
132 }
133
134 @Retention(RetentionPolicy.RUNTIME)
135 @Target({ElementType.TYPE_USE})
136 @interface TYPE_USE {}
137
138 record TypeAnnotatedRec(@TYPE_USE int i) {}
139
140 public void testTypeAnnotationsInRecordComp() throws Throwable {
141 Class<?> recordClass = TypeAnnotatedRec.class;
142 RecordComponent rc = recordClass.getRecordComponents()[0];
143 AnnotatedType at = rc.getAnnotatedType();
144 Annotation[] annos = at.getAnnotations();
145 assertEquals(annos.length, 1);
146 assertEquals(annos[0].toString(), "@RecordReflectionTest$TYPE_USE()");
147
148 Field f = recordClass.getDeclaredField("i");
149 assertEquals(f.getAnnotatedType().getAnnotations().length, 1);
150 assertEquals(f.getAnnotatedType().getAnnotations()[0].toString(), annos[0].toString());
151 }
152 }