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. 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 /**
27 * RecordMemberTests
28 *
29 * @test
30 * @compile --enable-preview -source ${jdk.version} RecordMemberTests.java
31 * @run testng/othervm --enable-preview RecordMemberTests
32 */
33
34 import java.lang.reflect.Constructor;
35 import java.lang.reflect.Field;
36 import java.lang.reflect.Method;
37 import java.lang.reflect.Modifier;
38 import java.lang.reflect.Parameter;
39 import java.util.List;
40 import java.util.function.Supplier;
41
42 import org.testng.annotations.*;
43 import static org.testng.Assert.*;
44
45 @Test
46 public class RecordMemberTests {
47 record R1(int i, int j) {}
48
49 record R2(int i, int j) {
50 public R2 {}
51 }
52
53 record R3(int i, int j) {
54 public R3 {
55 this.i = i;
56 }
57 }
58
59 record R4(int i, int j) {
60 public R4 {
61 this.i = i;
62 this.j = j;
63 }
64 }
65
66 record R5(int i, int j) {
67 public R5 { this.i = this.j = 0; }
68 }
69
70 R1 r1 = new R1(1, 2);
71 R2 r2 = new R2(1, 2);
72 R3 r3 = new R3(1, 2);
73 R4 r4 = new R4(1, 2);
74 R5 r5 = new R5(1, 2);
75
76 public void testConstruction() {
77 for (int i : new int[] { r1.i, r2.i, r3.i, r4.i,
78 r1.i(), r2.i(), r3.i(), r4.i() })
79 assertEquals(i, 1);
80
81 for (int j : new int[] { r1.j, r2.j, r3.j, r4.j,
82 r1.j(), r2.j(), r3.j(), r4.j() })
83 assertEquals(j, 2);
84
85 assertEquals(r5.i, 0);
86 assertEquals(r5.j, 0);
87 }
88
89 public void testConstructorParameterNames() throws ReflectiveOperationException {
90 for (Class cl : List.of(R1.class, R2.class, R3.class, R4.class)) {
91 Constructor c = cl.getConstructor(int.class, int.class);
92 assertNotNull(c);
93 Parameter[] parameters = c.getParameters();
94 assertEquals(parameters.length, 2);
95 assertEquals(parameters[0].getName(), "i");
96 assertEquals(parameters[1].getName(), "j");
97 }
98 }
99
100 public void testSuperclass() {
101 assertEquals(R1.class.getSuperclass(), Record.class);
102 // class is final
103 assertTrue((R1.class.getModifiers() & Modifier.FINAL) != 0);
104 }
105
106 public void testMandatedMembersPresent() throws ReflectiveOperationException {
107 // fields are present, of the right type, final and private
108 assertEquals(R1.class.getDeclaredFields().length, 2);
109 for (String s : List.of("i", "j")) {
110 Field iField = R1.class.getDeclaredField(s);
111 assertEquals(iField.getType(), int.class);
112 assertEquals((iField.getModifiers() & Modifier.STATIC), 0);
113 assertTrue((iField.getModifiers() & Modifier.PRIVATE) != 0);
114 assertTrue((iField.getModifiers() & Modifier.FINAL) != 0);
115 }
116
117 // methods are present, of the right descriptor, and public/instance/concrete
118 for (String s : List.of("i", "j")) {
119 Method iMethod = R1.class.getDeclaredMethod(s);
120 assertEquals(iMethod.getReturnType(), int.class);
121 assertEquals(iMethod.getParameterCount(), 0);
122 assertEquals((iMethod.getModifiers() & (Modifier.PRIVATE | Modifier.PROTECTED | Modifier.STATIC | Modifier.ABSTRACT)), 0);
123 }
124
125 Constructor c = R1.class.getConstructor(int.class, int.class);
126 R1 r1 = (R1) c.newInstance(1, 2);
127 assertEquals(r1.i(), 1);
128 assertEquals(r1.j(), 2);
129 }
130
131 record OrdinaryMembers(int x) {
132 public static String ss;
133 public static String ssf () { return ss; }
134 public String sf () { return "instance"; }
135 }
136
137 public void testOrdinaryMembers() {
138 OrdinaryMembers.ss = "foo";
139 assertEquals(OrdinaryMembers.ssf(), "foo");
140 OrdinaryMembers o = new OrdinaryMembers(3);
141 assertEquals(o.sf(), "instance");
142 }
143
144 class LocalRecordHelper {
145 Class<?> m(int x) {
146 record R (int x) { }
147 assertEquals(new R(x).x(), x);
148 return R.class;
149 }
150 }
151
152 public void testLocalRecordsStatic() {
153 Class<?> c = new LocalRecordHelper().m(3);
154 assertTrue(c.isRecord());
155 assertTrue((c.getModifiers() & Modifier.STATIC) != 0);
156 assertTrue((c.getModifiers() & Modifier.FINAL) != 0);
157 }
158
159 static class NestedRecordHelper {
160 record R1(int x) { }
161
162 static class Nested {
163 record R2(int x) { }
164 }
165
166 Class<?> m() {
167 record R4(int x) { }
168 return R4.class;
169 }
170
171 Class<?> m2() {
172 Supplier<Class<?>> s = () -> {
173 record R5(int x) { }
174 return R5.class;
175 };
176 return s.get();
177 }
178
179 static Class<?> m3() {
180 record R6(int x) { }
181 return R6.class;
182 }
183
184 static Class<?> m4() {
185 Supplier<Class<?>> s = () -> {
186 record R7(int x) { }
187 return R7.class;
188 };
189 return s.get();
190 }
191 }
192
193 public void testNestedRecordsStatic() {
194 NestedRecordHelper n = new NestedRecordHelper();
195 for (Class<?> c : List.of(NestedRecordHelper.R1.class,
196 NestedRecordHelper.Nested.R2.class,
197 n.m(),
198 n.m2(),
199 NestedRecordHelper.m3(),
200 NestedRecordHelper.m4())) {
201 assertTrue(c.isRecord());
202 assertTrue((c.getModifiers() & Modifier.STATIC) != 0);
203 assertTrue((c.getModifiers() & Modifier.FINAL) != 0);
204 }
205 }
206 }