blob: a1bd793bd884a69d7c7e92ebbf61b7b89dbc379c (
plain) (
blame)
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
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.text;
import org.junit.Ignore;
import org.junit.Test;
import java.util.Locale;
import static org.junit.Assert.assertEquals;
/**
* @author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
* @since 5.1.14
*/
public class LowercaseTestCase {
@Test
public void testAZ() {
{
String lowercase = Lowercase.toLowerCase("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
assertEquals("abcdefghijklmnopqrstuvwxyz", lowercase);
}
{
String lowercase = Lowercase.toLowerCase("abcdefghijklmnopqrstuvwxyz");
assertEquals("abcdefghijklmnopqrstuvwxyz", lowercase);
}
{
String lowercase = Lowercase.toLowerCase("AbCDEfGHIJklmnoPQRStuvwXyz");
assertEquals("abcdefghijklmnopqrstuvwxyz", lowercase);
}
{
String lowercase = Lowercase.toLowerCase("@+#");
assertEquals("@+#", lowercase);
}
{
String lowercase = Lowercase.toLowerCase("[]");
assertEquals("[]", lowercase);
}
{
String lowercase = Lowercase.toLowerCase("{}");
assertEquals("{}", lowercase);
}
{
String lowercase = Lowercase.toLowerCase("\u00cd\u00f4");
assertEquals("\u00ed\u00f4", lowercase);
}
}
@Test
public void test7bitAscii() {
for(char c = 0; c < 128; c++) {
char [] carray = {c};
String s = new String(carray);
assertEquals(Lowercase.toLowerCase(s), s.toLowerCase(Locale.ENGLISH));
assertEquals(Lowercase.toUpperCase(s), s.toUpperCase(Locale.ENGLISH));
}
}
@Test
@Ignore
public void performance() {
for (int i=0; i < 2; i++) {
benchmark(i);
}
}
private void benchmark(int i) {
Lowercase.toLowerCase("warmup");
String lowercaseInput = "abcdefghijklmnopqrstuvwxyz" + i;
String uppercaseInput = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + i;
String mixedcaseInput = "AbCDEfGHIJklmnoPQRStuvwXyz" + i;
System.err.println("Lowercase input: ");
testPerformance(lowercaseInput);
System.err.println("Uppercase input: ");
testPerformance(uppercaseInput);
System.err.println("Mixed-case input: ");
testPerformance(mixedcaseInput);
}
private void testPerformance(String input) {
final int NUM = 100000000;
long elapsedTimeOwnImpl;
long ownCount = 0;
long javaCount = 0;
{
long startTimeOwnImpl = System.currentTimeMillis();
for (int i = 0; i < NUM; i++) {
ownCount += Lowercase.toLowerCase(input).length();
}
elapsedTimeOwnImpl = System.currentTimeMillis() - startTimeOwnImpl;
System.err.println("Own implementation: " + elapsedTimeOwnImpl);
}
long elapsedTimeJava;
{
long startTimeJava = System.currentTimeMillis();
for (int i = 0; i < NUM; i++) {
javaCount += input.toLowerCase(Locale.ENGLISH).length();
}
elapsedTimeJava = System.currentTimeMillis() - startTimeJava;
System.err.println("Java's implementation: " + elapsedTimeJava);
}
long diff = elapsedTimeJava - elapsedTimeOwnImpl;
double diffPercentage = (((double) diff) / ((double) elapsedTimeJava)) * 100.0;
System.err.println("Own implementation is " + diffPercentage + " % faster. owncount=" + ownCount + " javaCount=" + javaCount);
}
}
|
