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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.text;
import static org.junit.Assert.*;
import java.nio.ByteBuffer;
import org.junit.Before;
import org.junit.Test;
/**
* Check the Utf8Array API behaves as expected.
*
* @author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
*/
public class Utf8ArrayTestCase {
private String raw;
private byte[] rawBytes;
private Utf8Array toCheck;
@Before
public void setUp() {
raw = "0123456789";
rawBytes = Utf8.toBytes(raw);
toCheck = new Utf8Array(rawBytes);
}
@Test
public final void testGetByteLength() {
assertEquals(rawBytes.length, toCheck.getByteLength());
}
@Test
public final void testGetBytes() {
assertSame(rawBytes, toCheck.getBytes());
}
@Test
public final void testGetByteOffset() {
assertEquals(0, toCheck.getByteOffset());
}
@Test
public final void testUtf8ArrayByteArrayIntInt() {
Utf8Array otherConstructed = new Utf8Array(rawBytes, 0, rawBytes.length);
assertNotSame(rawBytes, otherConstructed.getBytes());
assertArrayEquals(rawBytes, otherConstructed.getBytes());
}
@Test
public final void testUtf8ArrayByteBufferInt() {
final ByteBuffer wrapper = ByteBuffer.wrap(rawBytes);
Utf8Array otherConstructed = new Utf8Array(wrapper, wrapper.remaining());
assertNotSame(rawBytes, otherConstructed.getBytes());
assertArrayEquals(rawBytes, otherConstructed.getBytes());
}
@Test
public final void testHashCode() {
Utf8Array other = new Utf8Array(Utf8.toBytes(" a23456789"));
assertFalse(other.hashCode() == toCheck.hashCode());
}
@Test
public final void testWriteTo() {
ByteBuffer b = ByteBuffer.allocate(rawBytes.length * 2);
byte[] copy = new byte[rawBytes.length];
toCheck.writeTo(b);
assertEquals(rawBytes.length, b.position());
b.position(0);
b.limit(rawBytes.length);
b.get(copy);
assertArrayEquals(rawBytes, copy);
}
@Test
public final void testGetByte() {
assertEquals('8', toCheck.getByte(8));
}
@Test
public final void testWrap() {
ByteBuffer b1 = toCheck.wrap();
ByteBuffer b2 = ByteBuffer.wrap(rawBytes);
byte[] c1 = new byte[b1.remaining()];
byte[] c2 = new byte[b2.remaining()];
b1.get(c1);
b2.get(c2);
assertArrayEquals(c2, c1);
}
@Test
public final void testIsEmpty() {
assertFalse(toCheck.isEmpty());
assertTrue(new Utf8Array(new byte[] {}).isEmpty());
}
@Test
public final void testEqualsObject() {
assertTrue(toCheck.equals(raw));
assertFalse(toCheck.equals(new Utf8Array(new byte[] {})));
assertFalse(toCheck.equals(new Utf8Array(Utf8.toBytes(" " + raw.substring(1)))));
assertTrue(toCheck.equals(toCheck));
assertTrue(toCheck.equals(new Utf8Array(rawBytes)));
}
@Test
public final void testToString() {
assertEquals(raw, toCheck.toString());
}
@Test
public final void testCompareTo() {
assertTrue(toCheck.compareTo(new Utf8Array(new byte[] {})) > 0);
assertTrue(toCheck.compareTo(new Utf8Array(Utf8.toBytes(raw + raw))) < 0);
assertTrue(toCheck.compareTo(new Utf8Array(Utf8.toBytes(" " + raw.substring(1)))) > 0);
assertTrue(toCheck.compareTo(new Utf8Array(Utf8.toBytes("a" + raw.substring(1)))) < 0);
assertTrue(toCheck.compareTo(new Utf8Array(rawBytes)) == 0);
}
@Test
public final void testPartial() {
final int length = 3;
final int offset = 1;
Utf8PartialArray partial = new Utf8PartialArray(rawBytes, offset, length);
assertEquals(length, partial.getByteLength());
assertEquals(offset, partial.getByteOffset());
byte[] expected = new byte[length];
ByteBuffer intermediate = ByteBuffer.allocate(rawBytes.length * 2);
System.arraycopy(rawBytes, offset, expected, 0, length);
partial.writeTo(intermediate);
intermediate.flip();
byte written[] = new byte[intermediate.remaining()];
intermediate.get(written);
assertArrayEquals(expected, written);
}
@Test
public final void testUtf8Strings() {
String nalle = "nalle";
Utf8String utf = new Utf8String(new Utf8Array(Utf8.toBytes(nalle)));
assertEquals('n', utf.charAt(0));
assertEquals(nalle.length(), utf.length());
assertEquals("alle", utf.subSequence(1, 5));
assertTrue(utf.equals(new Utf8String(new Utf8Array(Utf8.toBytes(nalle)))));
assertTrue(utf.equals(nalle));
}
@Test
public final void testAscii7bitLowercase() {
final byte [] expected = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 ,0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 ,0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26 ,0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36 ,0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66 ,0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76 ,0x77, 0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66 ,0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76 ,0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f
};
byte [] org = new byte[128];
for (byte b = 0; b >= 0; b++) {
org[b] = b;
}
assertArrayEquals(expected, new Utf8Array(org).ascii7BitLowerCase().getBytes());
}
}
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