io.aos.hdfs.StringTextComparisonTest.java Source code

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Here is the source code for io.aos.hdfs.StringTextComparisonTest.java

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package io.aos.hdfs;

// cc StringTextComparisonTest Tests showing the differences between the String and Text classes
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.io.*;

import org.apache.hadoop.io.Text;
import org.junit.Test;

// vv StringTextComparisonTest
public class StringTextComparisonTest {

    @Test
    public void string() throws UnsupportedEncodingException {

        String s = "\u0041\u00DF\u6771\uD801\uDC00";
        assertThat(s.length(), is(5));
        assertThat(s.getBytes("UTF-8").length, is(10));

        assertThat(s.indexOf("\u0041"), is(0));
        assertThat(s.indexOf("\u00DF"), is(1));
        assertThat(s.indexOf("\u6771"), is(2));
        assertThat(s.indexOf("\uD801\uDC00"), is(3));

        assertThat(s.charAt(0), is('\u0041'));
        assertThat(s.charAt(1), is('\u00DF'));
        assertThat(s.charAt(2), is('\u6771'));
        assertThat(s.charAt(3), is('\uD801'));
        assertThat(s.charAt(4), is('\uDC00'));

        assertThat(s.codePointAt(0), is(0x0041));
        assertThat(s.codePointAt(1), is(0x00DF));
        assertThat(s.codePointAt(2), is(0x6771));
        assertThat(s.codePointAt(3), is(0x10400));
    }

    @Test
    public void text() {

        Text t = new Text("\u0041\u00DF\u6771\uD801\uDC00");
        assertThat(t.getLength(), is(10));

        assertThat(t.find("\u0041"), is(0));
        assertThat(t.find("\u00DF"), is(1));
        assertThat(t.find("\u6771"), is(3));
        assertThat(t.find("\uD801\uDC00"), is(6));

        assertThat(t.charAt(0), is(0x0041));
        assertThat(t.charAt(1), is(0x00DF));
        assertThat(t.charAt(3), is(0x6771));
        assertThat(t.charAt(6), is(0x10400));
    }
}
// ^^ StringTextComparisonTest