/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.logging.log4j.util;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
/**
*
*/
public class CharsTest {
@Test
public void invalidDigitReturnsNullCharacter() throws Exception {
assertEquals('\0', Chars.getUpperCaseHex(-1));
assertEquals('\0', Chars.getUpperCaseHex(16));
assertEquals('\0', Chars.getUpperCaseHex(400));
assertEquals('\0', Chars.getLowerCaseHex(-1));
assertEquals('\0', Chars.getLowerCaseHex(16));
assertEquals('\0', Chars.getLowerCaseHex(400));
}
@Test
public void validDigitReturnsProperCharacter() throws Exception {
final char[] expectedLower = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
final char[] expectedUpper = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
for (int i = 0; i < 16; i++) {
assertEquals(String.format("Expected %x", i), expectedLower[i], Chars.getLowerCaseHex(i));
assertEquals(String.format("Expected %X", i), expectedUpper[i], Chars.getUpperCaseHex(i));
}
}
}