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 * @bug 8235369
27 * @summary reflection test for records
28 * @compile --enable-preview -source ${jdk.version} RecordReflectionTest.java
29 * @run testng/othervm --enable-preview RecordReflectionTest
30 */
31
32 import java.lang.annotation.*;
33 import java.lang.reflect.*;
34 import java.util.List;
35
36 import org.testng.annotations.*;
37 import static org.testng.Assert.*;
38
39 @Test
40 public class RecordReflectionTest {
41
42 class NoRecord {}
43
44 record R1() {}
45
46 record R2(int i, int j) {}
47
48 record R3(List<String> ls) {}
49
50 record R4(R1 r1, R2 r2, R3 r3) {}
51
52 public void testIsRecord() {
53 assertFalse(NoRecord.class.isRecord());
54
55 for (Class<?> c : List.of(R1.class, R2.class, R3.class)) {
56 String message = c.toGenericString();
57 assertTrue(c.isRecord(), message);
58 assertTrue(message.contains("record") , message);
59 }
60 }
61
62 public void testGetComponentsNoRecord() {
63 assertTrue(NoRecord.class.getRecordComponents().length == 0);
64 }
65
66 @DataProvider(name = "reflectionData")
67 public Object[][] reflectionData() {
68 return new Object[][] {
69 new Object[] { new R1(),
70 0,
71 null,
72 null,
73 null },
74 new Object[] { new R2(1, 2),
75 2,
76 new Object[]{ 1, 2 },
77 new String[]{ "i", "j" },
78 new String[]{ "int", "int"} },
79 new Object[] { new R3(List.of("1")),
80 1,
81 new Object[]{ List.of("1") },
82 new String[]{ "ls" },
83 new String[]{ "java.util.List<java.lang.String>"} },
84 new Object[] { new R4(new R1(), new R2(6, 7), new R3(List.of("s"))),
85 3,
86 new Object[]{ new R1(), new R2(6, 7), new R3(List.of("s")) } ,
87 new String[]{ "r1", "r2", "r3" },
88 new String[]{ R1.class.toString(), R2.class.toString(), R3.class.toString()} },
89 };
90 }
91
92 @Test(dataProvider = "reflectionData")
93 public void testRecordReflection(Object recordOb,
94 int numberOfComponents,
95 Object[] values,
96 String[] names,
97 String[] signatures)
98 throws ReflectiveOperationException
99 {
100 Class<?> recordClass = recordOb.getClass();
101 assertTrue(recordClass.isRecord());
102 RecordComponent[] recordComponents = recordClass.getRecordComponents();
103 assertEquals(recordComponents.length, numberOfComponents);
104 int i = 0;
105 for (RecordComponent rc : recordComponents) {
106 assertEquals(rc.getName(), names[i]);
107 assertEquals(rc.getType(), rc.getAccessor().getReturnType());
108 assertEquals(rc.getAccessor().invoke(recordOb), values[i]);
109 assertEquals(rc.getAccessor().getGenericReturnType().toString(), signatures[i],
110 String.format("signature of method \"%s\" different from expected signature \"%s\"",
111 rc.getAccessor().getGenericReturnType(), signatures[i]));
112 i++;
113 }
114 }
115
116 record R5(String... args) {}
117 record R6(long l, String... args) {}
118 record R7(String s1, String s2, String... args) {}
119
120 @Retention(RetentionPolicy.RUNTIME)
121 @Target({ ElementType.RECORD_COMPONENT, ElementType.FIELD })
122 @interface RCA {}
123
124 record AnnotatedRec(@RCA int i) {}
125
126 public void testDeclAnnotationsInRecordComp() throws Throwable {
127 Class<?> recordClass = AnnotatedRec.class;
128 RecordComponent rc = recordClass.getRecordComponents()[0];
129 Annotation[] annos = rc.getAnnotations();
130 assertEquals(annos.length, 1);
131 assertEquals(annos[0].toString(), "@RecordReflectionTest$RCA()");
132
133 Field f = recordClass.getDeclaredField("i");
134 assertEquals(f.getAnnotations().length, 1);
135 assertEquals(f.getAnnotations()[0].toString(), annos[0].toString());
136 }
137
138 @Retention(RetentionPolicy.RUNTIME)
139 @Target({ElementType.TYPE_USE})
140 @interface TYPE_USE {}
141
142 record TypeAnnotatedRec(@TYPE_USE int i) {}
143
144 public void testTypeAnnotationsInRecordComp() throws Throwable {
145 Class<?> recordClass = TypeAnnotatedRec.class;
146 RecordComponent rc = recordClass.getRecordComponents()[0];
147 AnnotatedType at = rc.getAnnotatedType();
148 Annotation[] annos = at.getAnnotations();
149 assertEquals(annos.length, 1);
150 assertEquals(annos[0].toString(), "@RecordReflectionTest$TYPE_USE()");
151
152 Field f = recordClass.getDeclaredField("i");
153 assertEquals(f.getAnnotatedType().getAnnotations().length, 1);
154 assertEquals(f.getAnnotatedType().getAnnotations()[0].toString(), annos[0].toString());
155 }
156 }