1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* Copyright (C) 2017-2022 Sebastiano Vigna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package it.unimi.dsi.fastutil.ints;
import it.unimi.dsi.fastutil.objects.ObjectListIterator;
import java.io.IOException;
import static org.junit.Assert.*;
import org.junit.Test;
@SuppressWarnings({ "rawtypes", "unchecked" })
public class IntArrayFrontCodedListTest {
private static java.util.Random r = new java.util.Random(0);
private static int genKey() {
return r.nextInt();
}
private static boolean contentEquals(java.util.List x, java.util.List y) {
if (x.size() != y.size()) return false;
for (int i = 0; i < x.size(); i++)
if (!java.util.Arrays.equals((int[])x.get(i), (int[])y.get(i))) return false;
return true;
}
private static int l[];
private static int[][] a;
private static void test(int n) throws IOException, ClassNotFoundException {
l = new int[n];
a = new int[n][];
for (int i = 0; i < n; i++)
l[i] = (int)(Math.abs(r.nextGaussian()) * 32);
for (int i = 0; i < n; i++)
a[i] = new int[l[i]];
for (int i = 0; i < n; i++)
for (int j = 0; j < l[i]; j++)
a[i][j] = genKey();
IntArrayFrontCodedList m = new IntArrayFrontCodedList(it.unimi.dsi.fastutil.objects.ObjectIterators.wrap(a), r.nextInt(4) + 1);
it.unimi.dsi.fastutil.objects.ObjectArrayList t = new it.unimi.dsi.fastutil.objects.ObjectArrayList(a);
// System.out.println(m);
// for(i = 0; i < t.size(); i++)
// System.out.println(ARRAY_LIST.wrap((KEY_TYPE[])t.get(i)));
/* Now we check that m actually holds that data. */
assertTrue("Error: m does not equal t at creation", contentEquals(m, t));
/* Now we check cloning. */
assertTrue("Error: m does not equal m.clone()", contentEquals(m, m.clone()));
/* Now we play with iterators. */
{
ObjectListIterator i;
java.util.ListIterator j;
i = m.listIterator();
j = t.listIterator();
for (int k = 0; k < 2 * n; k++) {
assertTrue("Error: divergence in hasNext()", i.hasNext() == j.hasNext());
assertTrue("Error: divergence in hasPrevious()", i.hasPrevious() == j.hasPrevious());
if (r.nextFloat() < .8 && i.hasNext()) {
assertTrue("Error: divergence in next()", java.util.Arrays.equals((int[])i.next(), (int[])j.next()));
}
else if (r.nextFloat() < .2 && i.hasPrevious()) {
assertTrue("Error: divergence in previous()", java.util.Arrays.equals((int[])i.previous(), (int[])j.previous()));
}
assertTrue("Error: divergence in nextIndex()", i.nextIndex() == j.nextIndex());
assertTrue("Error: divergence in previousIndex()", i.previousIndex() == j.previousIndex());
}
}
{
int from = r.nextInt(m.size() + 1);
ObjectListIterator i;
java.util.ListIterator j;
i = m.listIterator(from);
j = t.listIterator(from);
for (int k = 0; k < 2 * n; k++) {
assertTrue("Error: divergence in hasNext() (iterator with starting point " + from + ")", i.hasNext() == j.hasNext());
assertTrue("Error: divergence in hasPrevious() (iterator with starting point " + from + ")", i.hasPrevious() == j.hasPrevious());
if (r.nextFloat() < .8 && i.hasNext()) {
assertTrue("Error: divergence in next() (iterator with starting point " + from + ")", java.util.Arrays.equals((int[])i.next(), (int[])j.next()));
// System.err.println("Done next " + I + " " + J + " " + badPrevious);
}
else if (r.nextFloat() < .2 && i.hasPrevious()) {
assertTrue("Error: divergence in previous() (iterator with starting point " + from + ")", java.util.Arrays.equals((int[])i.previous(), (int[])j.previous()));
}
}
}
java.io.File ff = new java.io.File("it.unimi.dsi.fastutil.test.junit." + m.getClass().getSimpleName() + "." + n);
java.io.OutputStream os = new java.io.FileOutputStream(ff);
java.io.ObjectOutputStream oos = new java.io.ObjectOutputStream(os);
oos.writeObject(m);
oos.close();
java.io.InputStream is = new java.io.FileInputStream(ff);
java.io.ObjectInputStream ois = new java.io.ObjectInputStream(is);
m = (IntArrayFrontCodedList)ois.readObject();
ois.close();
ff.delete();
assertTrue("Error: m does not equal t after save/read", contentEquals(m, t));
return;
}
@Test
public void test1() throws IOException, ClassNotFoundException {
test(1);
}
@Test
public void test10() throws Exception, ClassNotFoundException {
test(10);
}
@Test
public void test100() throws IOException, ClassNotFoundException {
test(100);
}
@Test
public void test1000() throws IOException, ClassNotFoundException {
test(1000);
}
@Test
public void test10000() throws IOException, ClassNotFoundException {
test(10000);
}
}
|
