io.aos.hdfs.TextTest.java Source code

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

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package io.aos.hdfs;

// == TextTest
// == TextTest-Find
// == TextTest-Mutability
// == TextTest-ByteArrayNotShortened
// == TextTest-ToString
// == TextTest-Comparison
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.assertThat;

import java.io.IOException;
import org.apache.hadoop.io.*;
import org.junit.Test;

public class TextTest extends WritableTestBase {

    @Test
    public void test() throws IOException {
        // vv TextTest
        Text t = new Text("hadoop");
        assertThat(t.getLength(), is(6));
        assertThat(t.getBytes().length, is(6));

        assertThat(t.charAt(2), is((int) 'd'));
        assertThat("Out of bounds", t.charAt(100), is(-1));
        // ^^ TextTest
    }

    @Test
    public void find() throws IOException {
        // vv TextTest-Find
        Text t = new Text("hadoop");
        assertThat("Find a substring", t.find("do"), is(2));
        assertThat("Finds first 'o'", t.find("o"), is(3));
        assertThat("Finds 'o' from position 4 or later", t.find("o", 4), is(4));
        assertThat("No match", t.find("pig"), is(-1));
        // ^^ TextTest-Find
    }

    @Test
    public void mutability() throws IOException {
        // vv TextTest-Mutability
        Text t = new Text("hadoop");
        t.set("pig");
        assertThat(t.getLength(), is(3));
        assertThat(t.getBytes().length, is(3));
        // ^^ TextTest-Mutability
    }

    @Test
    public void byteArrayNotShortened() throws IOException {
        // vv TextTest-ByteArrayNotShortened
        Text t = new Text("hadoop");
        t.set(/*[*/new Text("pig")/*]*/);
        assertThat(t.getLength(), is(3));
        assertThat("Byte length not shortened", t.getBytes().length, /*[*/is(6)/*]*/);
        // ^^ TextTest-ByteArrayNotShortened
    }

    @Test
    public void toStringMethod() throws IOException {
        // vv TextTest-ToString
        assertThat(new Text("hadoop").toString(), is("hadoop"));
        // ^^ TextTest-ToString
    }

    @Test
    public void comparison() throws IOException {
        // vv TextTest-Comparison
        assertThat("\ud800\udc00".compareTo("\ue000"), lessThan(0));
        assertThat(new Text("\ud800\udc00").compareTo(new Text("\ue000")), greaterThan(0));
        // ^^ TextTest-Comparison
    }

    @Test
    public void withSupplementaryCharacters() throws IOException {

        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'), is(3));
        assertThat(s.indexOf('\uDC00'), is(4));

        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'));

        Text t = new Text("\u0041\u00DF\u6771\uD801\uDC00");

        assertThat(serializeToString(t), is("0a41c39fe69db1f0909080"));

        assertThat(t.charAt(t.find("\u0041")), is(0x0041));
        assertThat(t.charAt(t.find("\u00DF")), is(0x00DF));
        assertThat(t.charAt(t.find("\u6771")), is(0x6771));
        assertThat(t.charAt(t.find("\uD801\uDC00")), is(0x10400));

    }

}