| /* |
| * 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.solr.util.hll; |
| |
| import org.junit.Test; |
| import static org.junit.Assert.*; |
| |
| import java.util.Arrays; |
| |
| /** |
| * Tests {@link NumberUtil} |
| */ |
| public class NumberUtilTest { |
| |
| final static byte[] ALL_PRINTABLE_ASCII_CHARS = new byte[] { ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', |
| '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', |
| 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
| 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', |
| 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '', }; |
| |
| final static byte[] ALL_WORD_CHARAC_ASCII_CHARS = new byte[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', |
| 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
| 'Y', 'Z' }; |
| |
| final static byte[] ALL_NUMBER_CHARAC_ASCII_CHARS = new byte[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'}; |
| |
| final static byte[] ALL_LETTER_ASCII_CHARS = new byte[] { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', |
| 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; |
| |
| final static String ALL_NUMBER_ASCII_CHARS_IN_HEX = "30313233343536373839"; |
| final static String ALL_MAJ_LETTERS_ASCII_CHARS_IN_HEX = "4142434445464748494A4B4C4D4E4F" + "505152535455565758595A"; |
| final static String ALL_LOW_LETTERS_ASCII_CHARS_IN_HEX = "6162636465666768696A6B6C6D6E6F" + "707172737475767778797A"; |
| |
| final static String ALL_PRINTABLE_ASCII_CHARS_IN_HEX = "202122232425262728292A2B2C2D2E2F" |
| + ALL_NUMBER_ASCII_CHARS_IN_HEX + "3A3B3C3D3E3F" + "40" + ALL_MAJ_LETTERS_ASCII_CHARS_IN_HEX + "5B5C5D5E5F" + "60" |
| + ALL_LOW_LETTERS_ASCII_CHARS_IN_HEX + "7B7C7D7E7F"; |
| |
| /** |
| * Test {@link NumberUtil#log2(double)}. |
| */ |
| @Test |
| public void testLog2() { |
| final double log2Result = NumberUtil.log2(2d); |
| assertTrue(log2Result == 1); |
| } |
| |
| /** |
| * Test {@link NumberUtil#toHex(byte[], int, int)} |
| */ |
| @Test |
| public void TestToHex() { |
| assertTrue(ALL_PRINTABLE_ASCII_CHARS_IN_HEX |
| .equals(NumberUtil.toHex(ALL_PRINTABLE_ASCII_CHARS, 0, ALL_PRINTABLE_ASCII_CHARS.length))); |
| } |
| |
| /** |
| * Test {@link NumberUtil#toHex(byte[], int, int)} |
| */ |
| @Test |
| public void TestToHexWithOffset() { |
| assertTrue(ALL_MAJ_LETTERS_ASCII_CHARS_IN_HEX |
| .equals(NumberUtil.toHex(ALL_WORD_CHARAC_ASCII_CHARS, 10, ALL_PRINTABLE_ASCII_CHARS.length))); |
| } |
| |
| /** |
| * Test {@link NumberUtil#toHex(byte[], int, int)} |
| */ |
| @Test |
| public void TestToHexWithCountt() { |
| assertTrue(ALL_NUMBER_ASCII_CHARS_IN_HEX.equals(NumberUtil.toHex(ALL_WORD_CHARAC_ASCII_CHARS, 0, 10))); |
| } |
| |
| /** |
| * Test {@link NumberUtil#fromHex(String, int, int)} |
| */ |
| @Test |
| public void TestFromHex() { |
| assertTrue( |
| Arrays |
| .equals( |
| NumberUtil.fromHex(ALL_NUMBER_ASCII_CHARS_IN_HEX + ALL_MAJ_LETTERS_ASCII_CHARS_IN_HEX |
| + ALL_LOW_LETTERS_ASCII_CHARS_IN_HEX, 0, ALL_WORD_CHARAC_ASCII_CHARS.length * 2), |
| ALL_WORD_CHARAC_ASCII_CHARS)); |
| } |
| |
| /** |
| * Test {@link NumberUtil#fromHex(String, int, int)} |
| */ |
| @Test |
| public void TestFromHexWithOffset() { |
| assertTrue(Arrays.equals(NumberUtil.fromHex(ALL_NUMBER_ASCII_CHARS_IN_HEX + ALL_MAJ_LETTERS_ASCII_CHARS_IN_HEX, 20, |
| ALL_LETTER_ASCII_CHARS.length * 2), ALL_LETTER_ASCII_CHARS)); |
| } |
| |
| /** |
| * Test {@link NumberUtil#fromHex(String, int, int)} |
| */ |
| @Test |
| public void TestFromHexWithCount() { |
| assertTrue(Arrays.equals(NumberUtil.fromHex(ALL_NUMBER_ASCII_CHARS_IN_HEX + ALL_MAJ_LETTERS_ASCII_CHARS_IN_HEX, 0, |
| 20), ALL_NUMBER_CHARAC_ASCII_CHARS)); |
| } |
| } |