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SizeUnitTestCase.java
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SizeUnitTestCase.java
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/*
* JBoss, Home of Professional Open Source.
*
* Copyright 2022 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 org.jboss.resteasy.spi.config;
import java.text.DecimalFormatSymbols;
import java.util.Random;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
/**
* @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a>
*/
public class SizeUnitTestCase {
private static final DecimalFormatSymbols SYMBOLS = DecimalFormatSymbols.getInstance();
/**
* Tests converting sizes into a human-readable form.
*/
@Test
public void humanReadable() {
Assertions.assertEquals("1KB", SizeUnit.toHumanReadable(1024L));
Assertions.assertEquals("10MB", SizeUnit.toHumanReadable(SizeUnit.MEGABYTE.toBytes(10L)));
Assertions.assertEquals("1" + SYMBOLS.getDecimalSeparator() + "5KB", SizeUnit.toHumanReadable((512 * 3)));
Assertions.assertEquals("175" + SYMBOLS.getDecimalSeparator() + "09MB", SizeUnit.toHumanReadable(183598209L));
}
/**
* Tests converting the one unit to another.
* <p>
* Loops through each unit with a random number and attempts to convert the parent size into the units size.
* </p>
*/
@Test
public void convert() {
final Random r = new Random();
for (SizeUnit unit : SizeUnit.values()) {
final SizeUnit parent = unit.parent();
// BYTE does not have a parent, so we will test that differently
if (parent == null) {
Assertions.assertEquals(1024, SizeUnit.KILOBYTE.convert(1L, unit), 0);
continue;
}
final long size = createSize(r);
Assertions.assertEquals(size, parent.convert((size * 1024L), unit),
String.format("Failed to convert %d from %s to %s", size, parent, unit));
}
}
private static long createSize(final Random r) {
final int result = r.nextInt(128);
return result < 1 ? 1L : result;
}
}