/*
* Licensed 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 com.ok2c.lightnio.buffer;
import junit.framework.Assert;
import org.junit.Test;
/**
* Unit tests for {@link CharArrayBuffer}.
*/
public class TestCharArrayBuffer {
@Test(expected=IllegalArgumentException.class)
public void testConstructor() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(16);
Assert.assertEquals(16, buffer.capacity());
Assert.assertEquals(0, buffer.length());
Assert.assertNotNull(buffer.buffer());
Assert.assertEquals(16, buffer.buffer().length);
new CharArrayBuffer(-1);
}
@Test
public void testSimpleAppend() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(16);
Assert.assertEquals(16, buffer.capacity());
Assert.assertEquals(0, buffer.length());
char[] b1 = buffer.toCharArray();
Assert.assertNotNull(b1);
Assert.assertEquals(0, b1.length);
Assert.assertTrue(buffer.isEmpty());
Assert.assertFalse(buffer.isFull());
char[] tmp = new char[] { '1', '2', '3', '4'};
buffer.append(tmp, 0, tmp.length);
Assert.assertEquals(16, buffer.capacity());
Assert.assertEquals(4, buffer.length());
Assert.assertFalse(buffer.isEmpty());
Assert.assertFalse(buffer.isFull());
char[] b2 = buffer.toCharArray();
Assert.assertNotNull(b2);
Assert.assertEquals(4, b2.length);
for (int i = 0; i < tmp.length; i++) {
Assert.assertEquals(tmp[i], b2[i]);
Assert.assertEquals(tmp[i], buffer.charAt(i));
}
Assert.assertEquals("1234", buffer.toString());
buffer.clear();
Assert.assertEquals(16, buffer.capacity());
Assert.assertEquals(0, buffer.length());
Assert.assertTrue(buffer.isEmpty());
Assert.assertFalse(buffer.isFull());
}
@Test
public void testExpandAppend() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
Assert.assertEquals(4, buffer.capacity());
char[] tmp = new char[] { '1', '2', '3', '4'};
buffer.append(tmp, 0, 2);
buffer.append(tmp, 0, 4);
buffer.append(tmp, 0, 0);
Assert.assertEquals(8, buffer.capacity());
Assert.assertEquals(6, buffer.length());
buffer.append(tmp, 0, 4);
Assert.assertEquals(16, buffer.capacity());
Assert.assertEquals(10, buffer.length());
Assert.assertEquals("1212341234", buffer.toString());
}
@Test
public void testAppendString() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append("stuff");
buffer.append(" and more stuff");
Assert.assertEquals("stuff and more stuff", buffer.toString());
}
@Test
public void testAppendNullString() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append((String)null);
Assert.assertEquals("null", buffer.toString());
}
@Test
public void testAppendCharArrayBuffer() throws Exception {
CharArrayBuffer buffer1 = new CharArrayBuffer(8);
buffer1.append(" and more stuff");
CharArrayBuffer buffer2 = new CharArrayBuffer(8);
buffer2.append("stuff");
buffer2.append(buffer1);
Assert.assertEquals("stuff and more stuff", buffer2.toString());
}
@Test
public void testAppendNullCharArrayBuffer() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append((CharArrayBuffer)null);
buffer.append((CharArrayBuffer)null, 0, 0);
Assert.assertEquals("", buffer.toString());
}
@Test
public void testAppendSingleChar() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
buffer.append('1');
buffer.append('2');
buffer.append('3');
buffer.append('4');
buffer.append('5');
buffer.append('6');
Assert.assertEquals("123456", buffer.toString());
}
@Test
public void testInvalidCharArrayAppend() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
buffer.append((char[])null, 0, 0);
char[] tmp = new char[] { '1', '2', '3', '4'};
try {
buffer.append(tmp, -1, 0);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 0, -1);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 0, 8);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 10, Integer.MAX_VALUE);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 2, 4);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
}
@Test
public void testSetLength() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
buffer.setLength(2);
Assert.assertEquals(2, buffer.length());
}
@Test
public void testSetInvalidLength() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
try {
buffer.setLength(-2);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.setLength(200);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
}
@Test
public void testEnsureCapacity() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
buffer.ensureCapacity(2);
Assert.assertEquals(4, buffer.capacity());
buffer.ensureCapacity(8);
Assert.assertEquals(8, buffer.capacity());
}
@Test
public void testIndexOf() {
CharArrayBuffer buffer = new CharArrayBuffer(16);
buffer.append("name: value");
Assert.assertEquals(4, buffer.indexOf(':'));
Assert.assertEquals(-1, buffer.indexOf(','));
Assert.assertEquals(4, buffer.indexOf(':', -1, 11));
Assert.assertEquals(4, buffer.indexOf(':', 0, 1000));
Assert.assertEquals(-1, buffer.indexOf(':', 2, 1));
}
@Test
public void testSubstring() {
CharArrayBuffer buffer = new CharArrayBuffer(16);
buffer.append(" name: value ");
Assert.assertEquals(5, buffer.indexOf(':'));
Assert.assertEquals(" name", buffer.substring(0, 5));
Assert.assertEquals(" value ", buffer.substring(6, buffer.length()));
Assert.assertEquals("name", buffer.substringTrimmed(0, 5));
Assert.assertEquals("value", buffer.substringTrimmed(6, buffer.length()));
Assert.assertEquals("", buffer.substringTrimmed(13, buffer.length()));
}
@Test
public void testSubstringIndexOfOutBound() {
CharArrayBuffer buffer = new CharArrayBuffer(16);
buffer.append("stuff");
try {
buffer.substring(-2, 10);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.substringTrimmed(-2, 10);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.substring(12, 10);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.substringTrimmed(12, 10);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.substring(2, 1);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.substringTrimmed(2, 1);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
}
@Test
public void testAppendAsciiByteArray() throws Exception {
String s1 = "stuff";
String s2 = " and more stuff";
byte[] b1 = s1.getBytes("US-ASCII");
byte[] b2 = s2.getBytes("US-ASCII");
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append(b1, 0, b1.length);
buffer.append(b2, 0, b2.length);
Assert.assertEquals("stuff and more stuff", buffer.toString());
}
@Test
public void testAppendISOByteArray() throws Exception {
byte[] b = new byte[] {0x00, 0x20, 0x7F, -0x80, -0x01};
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append(b, 0, b.length);
char[] ch = buffer.toCharArray();
Assert.assertNotNull(ch);
Assert.assertEquals(5, ch.length);
Assert.assertEquals(0x00, ch[0]);
Assert.assertEquals(0x20, ch[1]);
Assert.assertEquals(0x7F, ch[2]);
Assert.assertEquals(0x80, ch[3]);
Assert.assertEquals(0xFF, ch[4]);
}
@Test
public void testAppendNullByteArray() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append((byte[])null, 0, 0);
Assert.assertEquals("", buffer.toString());
}
@Test
public void testAppendNullByteArrayBuffer() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(8);
buffer.append((ByteArrayBuffer)null, 0, 0);
Assert.assertEquals("", buffer.toString());
}
@Test
public void testInvalidAppendAsciiByteArray() throws Exception {
CharArrayBuffer buffer = new CharArrayBuffer(4);
buffer.append((byte[])null, 0, 0);
byte[] tmp = new byte[] { '1', '2', '3', '4'};
try {
buffer.append(tmp, -1, 0);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 0, -1);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 0, 8);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 10, Integer.MAX_VALUE);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
try {
buffer.append(tmp, 2, 4);
Assert.fail("IndexOutOfBoundsException should have been thrown");
} catch (IndexOutOfBoundsException ex) {
// expected
}
}
}