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// Copyright 2016 Yahoo Inc. 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.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;
/**
* @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");
assertThat(lowercase, equalTo("abcdefghijklmnopqrstuvwxyz"));
}
{
String lowercase = Lowercase.toLowerCase("abcdefghijklmnopqrstuvwxyz");
assertThat(lowercase, equalTo("abcdefghijklmnopqrstuvwxyz"));
}
{
String lowercase = Lowercase.toLowerCase("AbCDEfGHIJklmnoPQRStuvwXyz");
assertThat(lowercase, equalTo("abcdefghijklmnopqrstuvwxyz"));
}
{
String lowercase = Lowercase.toLowerCase("@+#");
assertThat(lowercase, equalTo("@+#"));
}
{
String lowercase = Lowercase.toLowerCase("[]");
assertThat(lowercase, equalTo("[]"));
}
{
String lowercase = Lowercase.toLowerCase("{}");
assertThat(lowercase, equalTo("{}"));
}
{
String lowercase = Lowercase.toLowerCase("\u00cd\u00f4");
assertThat(lowercase, equalTo("\u00ed\u00f4"));
}
}
@Test
@Ignore
public void performance() {
Lowercase.toLowerCase("warmup");
String lowercaseInput = "abcdefghijklmnopqrstuvwxyz";
String uppercaseInput = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String mixedcaseInput = "AbCDEfGHIJklmnoPQRStuvwXyz";
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 = 10000000;
long elapsedTimeOwnImpl;
{
long startTimeOwnImpl = System.currentTimeMillis();
for (int i = 0; i < NUM; i++) {
Lowercase.toLowerCase(input);
}
elapsedTimeOwnImpl = System.currentTimeMillis() - startTimeOwnImpl;
System.err.println("Own implementation: " + elapsedTimeOwnImpl);
}
long elapsedTimeJava;
{
long startTimeJava = System.currentTimeMillis();
for (int i = 0; i < NUM; i++) {
input.toLowerCase(Locale.ENGLISH);
}
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.");
}
}
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