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
142
143
144
145
146
|
package com.sprunck.sample;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.HashMap;
import org.junit.Test;
public class MiniHashMapTest {
@Test
public void testRemove() {
final MiniHashMap<String, Integer> map = new MiniHashMap<String, Integer>();
map.put("Lars", 1);
map.put("Günther", 12);
map.put("Max", 2);
assertEquals(null, map.get("Markus"));
assertEquals(1, map.get("Lars"), 0);
assertEquals(2, map.get("Max"), 0);
assertEquals(12, map.get("Günther"), 0);
map.remove("Max");
assertEquals(null, map.get("Markus"));
assertEquals(1, map.get("Lars"), 0);
assertEquals(null, map.get("Max"));
assertEquals(12, map.get("Günther"), 0);
assertEquals(true, map.remove("Lars"));
assertEquals(false, map.remove("Lars"));
assertEquals(null, map.get("Markus"));
assertEquals(null, map.get("Lars"));
assertEquals(null, map.get("Max"));
assertEquals(12, map.get("Günther"), 0);
map.put("Lars", 1);
map.put("Günther", 12);
map.put("Max", 2);
assertEquals(true, map.remove("Günther"));
}
@Test
public void testStandard() {
final MiniHashMap<String, Integer> map = new MiniHashMap<String, Integer>();
map.put("Lars", 1);
map.put("Günther", 12);
map.put("Max", 2);
assertEquals(null, map.get("Markus"));
assertEquals(1, map.get("Lars"), 0);
assertEquals(2, map.get("Max"), 0);
assertEquals(12, map.get("Günther"), 0);
}
@Test
public void testDoublePut() {
final MiniHashMap<String, Integer> map = new MiniHashMap<String, Integer>();
map.put("Lars", 1);
map.put("Günther", 12);
assertEquals(1, map.get("Lars"), 0);
assertEquals(12, map.get("Günther"), 0);
map.put("Lars", 14);
map.put("Günther", 122);
map.put("Fred", 11111);
assertEquals(14, map.get("Lars"), 0);
assertEquals(122, map.get("Günther"), 0);
}
@Test
public void testBigNumber() {
final MiniHashMap<String, Integer> map = new MiniHashMap<String, Integer>();
final int maxIndex = 33; // set this to big number
for (int i = 0; i < maxIndex; i++) {
map.put("Tom" + String.valueOf(i), i);
}
for (int i = 0; i < maxIndex; i++) {
assertEquals(map.get("Tom" + String.valueOf(i)), i, 0);
}
}
@Test
public void testRemoveBigNumber() {
final MiniHashMap<String, Integer> map = new MiniHashMap<String, Integer>();
final int maxIndex = 1000;
for (int i = 0; i < maxIndex; i++) {
final String key = "Tom" + String.valueOf(i);
map.put(key, i);
}
for (int i = maxIndex / 3; i < (maxIndex / 2); i++) {
assertTrue(map.remove("Tom" + String.valueOf(i)));
}
for (int i = 0; i < maxIndex; i++) {
if ((i >= (maxIndex / 3)) && (i < (maxIndex / 2))) {
assertEquals(null, map.get("Tom" + String.valueOf(i)));
} else {
assertEquals(map.get("Tom" + String.valueOf(i)), i, 0);
}
}
}
@Test
public void testRandom() {
final MiniHashMap<String, Integer> map = new MiniHashMap<String, Integer>(997);
final HashMap<String, Integer> mapJdK = new HashMap<String, Integer>(997);
final int maxIndex = 10000;
for (int i = 0; i < maxIndex; i++) {
final String key = "Tom" + String.valueOf((int) (Math.random() * maxIndex));
map.put(key, i);
mapJdK.put(key, i);
assertEquals(map.get(key), mapJdK.get(key), 0);
}
for (int i = 0; i < maxIndex; i++) {
final String key = "Tom" + String.valueOf((int) (Math.random() * maxIndex));
map.put(key, i);
mapJdK.put(key, i);
assertEquals(map.get(key), mapJdK.get(key), 0);
}
for (int i = 0; i < maxIndex; i++) {
final String key = "Tom" + String.valueOf((int) (Math.random() * maxIndex));
if ((null != map.get(key)) || (null != mapJdK.get(key))) {
assertEquals(map.get(key), mapJdK.get(key), 0);
}
}
for (int i = 0; i < maxIndex; i++) {
final String key = "Tom" + String.valueOf((int) (Math.random() * maxIndex));
map.remove(key);
mapJdK.remove(key);
assertNull(map.get(key));
assertNull(mapJdK.get(key));
}
}
}
|