org.apache.tajo.util.TestStringUtil.java Source code

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Here is the source code for org.apache.tajo.util.TestStringUtil.java

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/**
 * 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.tajo.util;

import org.apache.commons.lang.CharUtils;
import org.apache.commons.lang.StringEscapeUtils;
import org.junit.Test;

import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;

import static org.junit.Assert.*;

public class TestStringUtil {

    @Test
    public void testUnicodeEscapedDelimiter() {
        for (int i = 0; i < 128; i++) {
            char c = (char) i;
            String delimiter = CharUtils.unicodeEscaped(c);
            String escapedDelimiter = StringUtils.unicodeEscapedDelimiter(delimiter);
            assertEquals(delimiter, escapedDelimiter);
            assertEquals(1, StringEscapeUtils.unescapeJava(escapedDelimiter).length());
            assertEquals(c, StringEscapeUtils.unescapeJava(escapedDelimiter).charAt(0));
        }
    }

    @Test
    public void testUnescapedDelimiter() {
        for (int i = 0; i < 128; i++) {
            char c = (char) i;
            String delimiter = String.valueOf(c);
            String escapedDelimiter = StringUtils.unicodeEscapedDelimiter(delimiter);
            assertEquals(CharUtils.unicodeEscaped(c), escapedDelimiter);
            assertEquals(1, StringEscapeUtils.unescapeJava(escapedDelimiter).length());
            assertEquals(c, StringEscapeUtils.unescapeJava(escapedDelimiter).charAt(0));
        }
    }

    @Test
    public void testVariousDelimiter() {
        /*
        * Character         ASCII    Unicode
        *
        * Horizontal tab    9        <U0009>
        * Space Bar         32       <U0020>
        * 1                 49       <U0031>
        * |                 124      <U007c>
        *
        * */

        String escapedDelimiter = "\\u0031";

        assertEquals(escapedDelimiter, StringUtils.unicodeEscapedDelimiter("1"));
        assertEquals(escapedDelimiter, StringUtils.unicodeEscapedDelimiter("\\1"));
        assertEquals(escapedDelimiter, StringUtils.unicodeEscapedDelimiter("\\u0031"));
        assertEquals(escapedDelimiter, StringUtils.unicodeEscapedDelimiter((char) 49));
        assertNotEquals(escapedDelimiter, StringUtils.unicodeEscapedDelimiter('\001'));

        String delimiter = "|";
        assertEquals("\\u007c", StringUtils.unicodeEscapedDelimiter(delimiter));
        assertEquals(delimiter, StringEscapeUtils.unescapeJava(StringUtils.unicodeEscapedDelimiter(delimiter)));

        String commaDelimiter = ",";
        assertEquals("\\u002c", StringUtils.unicodeEscapedDelimiter(commaDelimiter));
        assertEquals(commaDelimiter,
                StringEscapeUtils.unescapeJava(StringUtils.unicodeEscapedDelimiter(commaDelimiter)));

        String tabDelimiter = "\t";
        assertEquals("\\u0009", StringUtils.unicodeEscapedDelimiter(tabDelimiter));
        assertEquals(tabDelimiter,
                StringEscapeUtils.unescapeJava(StringUtils.unicodeEscapedDelimiter(tabDelimiter)));

        String spaceDelimiter = " ";
        assertEquals("\\u0020", StringUtils.unicodeEscapedDelimiter(spaceDelimiter));
        assertEquals(spaceDelimiter,
                StringEscapeUtils.unescapeJava(StringUtils.unicodeEscapedDelimiter(spaceDelimiter)));
    }

    @Test
    public void testAsciiBytes() {
        String asciiText = "abcde 12345 ABCDE";
        assertArrayEquals(asciiText.getBytes(), BytesUtils.toASCIIBytes(asciiText.toCharArray()));
    }

    @Test
    public void testSplitBytes() {
        String text = "abcde|12345|ABCDE";
        char separatorChar = '|';

        String[] textArray = org.apache.commons.lang.StringUtils.splitPreserveAllTokens(text, separatorChar);
        byte[][] bytesArray = BytesUtils.splitPreserveAllTokens(text.getBytes(), separatorChar, 3);

        assertEquals(textArray.length, bytesArray.length);
        for (int i = 0; i < textArray.length; i++) {
            assertArrayEquals(textArray[i].getBytes(), bytesArray[i]);
        }
    }

    @Test
    public void testSplitProjectionBytes() {
        String text = "abcde|12345|ABCDE";
        int[] target = new int[] { 1 };
        char separatorChar = '|';

        String[] textArray = org.apache.commons.lang.StringUtils.splitPreserveAllTokens(text, separatorChar);
        byte[][] bytesArray = BytesUtils.splitPreserveAllTokens(text.getBytes(), separatorChar, target, 3);

        assertEquals(textArray.length, bytesArray.length);

        assertNull(bytesArray[0]);
        assertNotNull(bytesArray[1]);
        assertArrayEquals(textArray[1].getBytes(), bytesArray[1]);
        assertNull(bytesArray[2]);
    }

    @Test
    public void testConvertBytesToChars() {
        byte[] testStringArray = new byte[] { 0x74, 0x61, 0x6A, 0x6F };
        assertArrayEquals(new char[] { 't', 'a', 'j', 'o' },
                StringUtils.convertBytesToChars(testStringArray, Charset.forName("UTF-8")));

        testStringArray = new byte[] { (byte) 0xED, (byte) 0x83, (byte) 0x80, (byte) 0xEC, (byte) 0xA1,
                (byte) 0xB0 };
        assertArrayEquals(new char[] { '\ud0c0', '\uc870' },
                StringUtils.convertBytesToChars(testStringArray, Charset.forName("UTF-8")));
    }

    @Test
    public void testConvertCharsToBytes() {
        char[] testStringArray = new char[] { 't', 'a', 'j', 'o' };
        assertArrayEquals(new byte[] { 0x74, 0x61, 0x6A, 0x6F },
                StringUtils.convertCharsToBytes(testStringArray, Charset.forName("UTF-8")));

        testStringArray = new char[] { '\ud0c0', '\uc870' };
        assertArrayEquals(
                new byte[] { (byte) 0xED, (byte) 0x83, (byte) 0x80, (byte) 0xEC, (byte) 0xA1, (byte) 0xB0 },
                StringUtils.convertCharsToBytes(testStringArray, Charset.forName("UTF-8")));
    }

    @Test
    public void testJoinIterable() {
        List<String> testList = new ArrayList<>();
        testList.add("t");
        testList.add("a");
        testList.add("j");
        testList.add("o");
        assertTrue(StringUtils.join(testList).equals("t, a, j, o"));
    }
}