ClassValueTest.java revision 8729:0242fce0f717 
1/*
2 * Copyright (c) 2011, 2012, 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/* @test
25 * @summary tests for class-specific values
26 * @compile ClassValueTest.java
27 * @run testng/othervm test.java.lang.invoke.ClassValueTest
28 */
29
30package test.java.lang.invoke;
31
32import org.testng.*;
33import static org.testng.AssertJUnit.*;
34import org.testng.annotations.*;
35
36/**
37 * @author jrose
38 */
39public class ClassValueTest {
40    static String nameForCV1(Class<?> type) {
41        return "CV1:" + type.getName();
42    }
43    int countForCV1;
44    final ClassValue<String> CV1 = new CV1();
45    private class CV1 extends ClassValue<String> {
46        protected String computeValue(Class<?> type) {
47            countForCV1++;
48            return nameForCV1(type);
49        }
50    }
51
52    static final Class<?>[] CLASSES = {
53        String.class,
54        Integer.class,
55        int.class,
56        boolean[].class,
57        char[][].class,
58        ClassValueTest.class
59    };
60
61    @Test
62    public void testGet() {
63        countForCV1 = 0;
64        for (Class<?> c : CLASSES) {
65            assertEquals(nameForCV1(c), CV1.get(c));
66        }
67        assertEquals(CLASSES.length, countForCV1);
68        for (Class<?> c : CLASSES) {
69            assertEquals(nameForCV1(c), CV1.get(c));
70        }
71        assertEquals(CLASSES.length, countForCV1);
72    }
73
74    @Test
75    public void testRemove() {
76        for (Class<?> c : CLASSES) {
77            CV1.get(c);
78        }
79        countForCV1 = 0;
80        int REMCOUNT = 3;
81        for (int i = 0; i < REMCOUNT; i++) {
82            CV1.remove(CLASSES[i]);
83        }
84        assertEquals(0, countForCV1);  // no change
85        for (Class<?> c : CLASSES) {
86            assertEquals(nameForCV1(c), CV1.get(c));
87        }
88        assertEquals(REMCOUNT, countForCV1);
89    }
90
91    static String nameForCVN(Class<?> type, int n) {
92        return "CV[" + n + "]" + type.getName();
93    }
94    int countForCVN;
95    class CVN extends ClassValue<String> {
96        final int n;
97        CVN(int n) { this.n = n; }
98        protected String computeValue(Class<?> type) {
99            countForCVN++;
100            return nameForCVN(type, n);
101        }
102    };
103
104    @Test
105    public void testGetMany() {
106        int CVN_COUNT1 = 100, CVN_COUNT2 = 100;
107        CVN cvns[] = new CVN[CVN_COUNT1 * CVN_COUNT2];
108        for (int n = 0; n < cvns.length; n++) {
109            cvns[n] = new CVN(n);
110        }
111        countForCVN = 0;
112        for (int pass = 0; pass <= 2; pass++) {
113            for (int i1 = 0; i1 < CVN_COUNT1; i1++) {
114                eachClass:
115                for (Class<?> c : CLASSES) {
116                    for (int i2 = 0; i2 < CVN_COUNT2; i2++) {
117                        int n = i1*CVN_COUNT2 + i2;
118                        assertEquals(0, countForCVN);
119                        assertEquals(nameForCVN(c, n), cvns[n].get(c));
120                        cvns[n].get(c);  //get it again
121                        //System.out.println("getting "+n+":"+cvns[n].get(c));
122                        boolean doremove = (((i1 + i2) & 3) == 0);
123                        switch (pass) {
124                        case 0:
125                            assertEquals(1, countForCVN);
126                            break;
127                        case 1:
128                            // remove on middle pass
129                            assertEquals(0, countForCVN);
130                            if (doremove) {
131                                //System.out.println("removing "+n+":"+cvns[n].get(c));
132                                cvns[n].remove(c);
133                                assertEquals(0, countForCVN);
134                            }
135                            break;
136                        case 2:
137                            assertEquals(doremove ? 1 : 0, countForCVN);
138                            break;
139                        }
140                        countForCVN = 0;
141                        if (i1 > i2 && i1 < i2+5)  continue eachClass;  // leave diagonal gap
142                    }
143                }
144            }
145        }
146        assertEquals(countForCVN, 0);
147        System.out.println("[rechecking values]");
148        for (int i = 0; i < cvns.length * 10; i++) {
149            int n = i % cvns.length;
150            for (Class<?> c : CLASSES) {
151                assertEquals(nameForCVN(c, n), cvns[n].get(c));
152            }
153        }
154    }
155}
156