/*
* 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.harmony.tests.java.nio;
import java.io.IOException;
import java.nio.BufferOverflowException;
import java.nio.BufferUnderflowException;
import java.nio.ByteOrder;
import java.nio.CharBuffer;
import java.nio.InvalidMarkException;
import java.nio.ReadOnlyBufferException;
/**
* Tests java.nio.CharBuffer
*
*/
public class CharBufferTest extends AbstractBufferTest {
protected static final int SMALL_TEST_LENGTH = 5;
protected static final int BUFFER_LENGTH = 20;
protected CharBuffer buf;
private static char[] chars = "123456789a".toCharArray();
protected void setUp() throws Exception{
char[] charscopy = new char[chars.length];
System.arraycopy(chars, 0, charscopy, 0, chars.length);
buf = CharBuffer.wrap(charscopy);
baseBuf = buf;
}
protected void tearDown() throws Exception{
buf = null;
baseBuf = null;
}
public void testArray() {
char array[] = buf.array();
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData1(array, buf.arrayOffset(), buf.capacity());
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData2(array, buf.arrayOffset(), buf.capacity());
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData1(buf);
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData2(buf);
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
}
public void testArrayOffset() {
char array[] = buf.array();
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData1(array, buf.arrayOffset(), buf.capacity());
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData2(array, buf.arrayOffset(), buf.capacity());
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData1(buf);
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
loadTestData2(buf);
assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity());
}
public void testAsReadOnlyBuffer() {
buf.clear();
buf.mark();
buf.position(buf.limit());
// readonly's contents should be the same as buf
CharBuffer readonly = buf.asReadOnlyBuffer();
assertNotSame(buf, readonly);
assertTrue(readonly.isReadOnly());
assertEquals(buf.position(), readonly.position());
assertEquals(buf.limit(), readonly.limit());
assertEquals(buf.isDirect(), readonly.isDirect());
assertEquals(buf.order(), readonly.order());
assertEquals(buf.capacity(), readonly.capacity());
assertContentEquals(buf, readonly);
// readonly's position, mark, and limit should be independent to buf
readonly.reset();
assertEquals(readonly.position(), 0);
readonly.clear();
assertEquals(buf.position(), buf.limit());
buf.reset();
assertEquals(buf.position(), 0);
buf.clear();
int originalPosition = (buf.position() + buf.limit()) / 2;
buf.position(originalPosition);
buf.mark();
buf.position(buf.limit());
// readonly's contents should be the same as buf
readonly = buf.asReadOnlyBuffer();
assertNotSame(buf, readonly);
assertTrue(readonly.isReadOnly());
assertEquals(buf.position(), readonly.position());
assertEquals(buf.limit(), readonly.limit());
assertEquals(buf.isDirect(), readonly.isDirect());
assertEquals(buf.order(), readonly.order());
assertEquals(buf.capacity(), readonly.capacity());
assertContentEquals(buf, readonly);
// readonly's position, mark, and limit should be independent to buf
readonly.reset();
assertEquals(readonly.position(), originalPosition);
readonly.clear();
assertEquals(buf.position(), buf.limit());
buf.reset();
assertEquals(buf.position(), originalPosition);
}
public void testCompact() {
// case: buffer is full
buf.clear();
buf.mark();
loadTestData1(buf);
CharBuffer ret = buf.compact();
assertSame(ret, buf);
assertEquals(buf.position(), buf.capacity());
assertEquals(buf.limit(), buf.capacity());
assertContentLikeTestData1(buf, 0, (char) 0, buf.capacity());
try {
buf.reset();
fail("Should throw Exception"); //$NON-NLS-1$
} catch (InvalidMarkException e) {
// expected
}
// case: buffer is empty
buf.position(0);
buf.limit(0);
buf.mark();
ret = buf.compact();
assertSame(ret, buf);
assertEquals(buf.position(), 0);
assertEquals(buf.limit(), buf.capacity());
assertContentLikeTestData1(buf, 0, (char) 0, buf.capacity());
try {
buf.reset();
fail("Should throw Exception"); //$NON-NLS-1$
} catch (InvalidMarkException e) {
// expected
}
// case: normal
assertTrue(buf.capacity() > 5);
buf.position(1);
buf.limit(5);
buf.mark();
ret = buf.compact();
assertSame(ret, buf);
assertEquals(buf.position(), 4);
assertEquals(buf.limit(), buf.capacity());
assertContentLikeTestData1(buf, 0, (char) 1, 4);
try {
buf.reset();
fail("Should throw Exception"); //$NON-NLS-1$
} catch (InvalidMarkException e) {
// expected
}
}
public void testCompareTo() {
// compare to self
assertEquals(0, buf.compareTo(buf));
assertTrue(buf.capacity() > SMALL_TEST_LENGTH);
buf.clear();
CharBuffer other = CharBuffer.allocate(buf.capacity());
other.put(buf);
other.clear();
buf.clear();
assertEquals(0, buf.compareTo(other));
assertEquals(0, other.compareTo(buf));
buf.position(1);
assertTrue(buf.compareTo(other) > 0);
assertTrue(other.compareTo(buf) < 0);
other.position(2);
assertTrue(buf.compareTo(other) < 0);
assertTrue(other.compareTo(buf) > 0);
buf.position(2);
assertTrue(buf.compareTo(other) == 0);
assertTrue(other.compareTo(buf) == 0);
other.limit(SMALL_TEST_LENGTH);
assertTrue(buf.compareTo(other) > 0);
assertTrue(other.compareTo(buf) < 0);
}
public void testDuplicate() {
// mark the position 0
buf.clear();
buf.mark();
buf.position(buf.limit());
// duplicate's contents should be the same as buf
CharBuffer duplicate = buf.duplicate();
assertNotSame(buf, duplicate);
assertEquals(buf.position(), duplicate.position());
assertEquals(buf.limit(), duplicate.limit());
assertEquals(buf.isReadOnly(), duplicate.isReadOnly());
assertEquals(buf.isDirect(), duplicate.isDirect());
assertEquals(buf.order(), duplicate.order());
assertEquals(buf.capacity(), duplicate.capacity());
assertContentEquals(buf, duplicate);
// duplicate's position, mark, and limit should be independent to
// buf
duplicate.reset();
assertEquals(duplicate.position(), 0);
duplicate.clear();
assertEquals(buf.position(), buf.limit());
buf.reset();
assertEquals(buf.position(), 0);
// mark another position
buf.clear();
int originalPosition = (buf.position() + buf.limit()) / 2;
buf.position(originalPosition);
buf.mark();
buf.position(buf.limit());
// duplicate's contents should be the same as buf
duplicate = buf.duplicate();
assertNotSame(buf, duplicate);
assertEquals(buf.position(), duplicate.position());
assertEquals(buf.limit(), duplicate.limit());
assertEquals(buf.isReadOnly(), duplicate.isReadOnly());
assertEquals(buf.isDirect(), duplicate.isDirect());
assertEquals(buf.order(), duplicate.order());
assertEquals(buf.capacity(), duplicate.capacity());
assertContentEquals(buf, duplicate);
// duplicate's position, mark, and limit should be independent to
// buf
duplicate.reset();
assertEquals(duplicate.position(), originalPosition);
duplicate.clear();
assertEquals(buf.position(), buf.limit());
buf.reset();
assertEquals(buf.position(), originalPosition);
// duplicate share the same content with buf
if (!duplicate.isReadOnly()) {
loadTestData1(buf);
assertContentEquals(buf, duplicate);
loadTestData2(duplicate);
assertContentEquals(buf, duplicate);
}
}
public void testEquals() {
// equal to self
assertTrue(buf.equals(buf));
CharBuffer readonly = buf.asReadOnlyBuffer();
assertTrue(buf.equals(readonly));
CharBuffer duplicate = buf.duplicate();
assertTrue(buf.equals(duplicate));
// always false, if type mismatch
assertFalse(buf.equals(Boolean.TRUE));
assertTrue(buf.capacity() > 5);
buf.limit(buf.capacity()).position(0);
readonly.limit(readonly.capacity()).position(1);
assertFalse(buf.equals(readonly));
buf.limit(buf.capacity() - 1).position(0);
duplicate.limit(duplicate.capacity()).position(0);
assertFalse(buf.equals(duplicate));
}
/*
* Class under test for char get()
*/
public void testGet() {
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), i);
assertEquals(buf.get(), buf.get(i));
}
try {
buf.get();
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferUnderflowException e) {
// expected
}
}
/*
* Class under test for java.nio.CharBuffer get(char[])
*/
public void testGetcharArray() {
char array[] = new char[1];
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), i);
CharBuffer ret = buf.get(array);
assertEquals(array[0], buf.get(i));
assertSame(ret, buf);
}
try {
buf.get(array);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferUnderflowException e) {
// expected
}
}
/*
* Class under test for java.nio.CharBuffer get(char[], int, int)
*/
public void testGetcharArrayintint() {
buf.clear();
char array[] = new char[buf.capacity()];
try {
buf.get(new char[buf.capacity() + 1], 0, buf.capacity() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferUnderflowException e) {
// expected
}
assertEquals(buf.position(), 0);
try {
buf.get(array, -1, array.length);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
buf.get(array, array.length, 0);
try {
buf.get(array, array.length + 1, 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
assertEquals(buf.position(), 0);
try {
buf.get(array, 2, -1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.get((char[])null, 2, -1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
try {
buf.get(array, 2, array.length);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.get(array, 1, Integer.MAX_VALUE);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferUnderflowException expected) {
} catch (IndexOutOfBoundsException expected) {
}
try {
buf.get(array, Integer.MAX_VALUE, 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
assertEquals(buf.position(), 0);
buf.clear();
CharBuffer ret = buf.get(array, 0, array.length);
assertEquals(buf.position(), buf.capacity());
assertContentEquals(buf, array, 0, array.length);
assertSame(ret, buf);
}
/*
* Class under test for char get(int)
*/
public void testGetint() {
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), i);
assertEquals(buf.get(), buf.get(i));
}
try {
buf.get(-1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.get(buf.limit());
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
}
public void testHashCode() {
buf.clear();
loadTestData1(buf);
CharBuffer readonly = buf.asReadOnlyBuffer();
CharBuffer duplicate = buf.duplicate();
assertTrue(buf.hashCode() == readonly.hashCode());
assertTrue(buf.capacity() > SMALL_TEST_LENGTH);
duplicate.position(buf.capacity() / 2);
assertTrue(buf.hashCode() != duplicate.hashCode());
}
/*
* Class under test for java.nio.CharBuffer put(char)
*/
public void testPutchar() {
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), i);
CharBuffer ret = buf.put((char) i);
assertEquals(buf.get(i), (char) i);
assertSame(ret, buf);
}
try {
buf.put((char) 0);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException e) {
// expected
}
}
/*
* Class under test for java.nio.CharBuffer put(char[])
*/
public void testPutcharArray() {
char array[] = new char[1];
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), i);
array[0] = (char) i;
CharBuffer ret = buf.put(array);
assertEquals(buf.get(i), (char) i);
assertSame(ret, buf);
}
try {
buf.put(array);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException e) {
// expected
}
try {
buf.put((char[]) null);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
}
/*
* Class under test for java.nio.CharBuffer put(char[], int, int)
*/
public void testPutcharArrayintint() {
buf.clear();
char array[] = new char[buf.capacity()];
try {
buf.put((char[]) null, 0, 1);
fail("Should throw NullPointerException"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
try {
buf.put(new char[buf.capacity() + 1], 0, buf.capacity() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException e) {
// expected
}
assertEquals(buf.position(), 0);
try {
buf.put(array, -1, array.length);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put(array, array.length + 1, 0);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
buf.put(array, array.length, 0);
assertEquals(buf.position(), 0);
try {
buf.put(array, 0, -1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put((char[])null, 0, -1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
try {
buf.put(array, 2, array.length);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put(array, Integer.MAX_VALUE, 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put(array, 1, Integer.MAX_VALUE);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException expected) {
} catch (IndexOutOfBoundsException expected) {
}
assertEquals(buf.position(), 0);
loadTestData2(array, 0, array.length);
CharBuffer ret = buf.put(array, 0, array.length);
assertEquals(buf.position(), buf.capacity());
assertContentEquals(buf, array, 0, array.length);
assertSame(ret, buf);
}
/*
* Class under test for java.nio.CharBuffer put(java.nio.CharBuffer)
*/
public void testPutCharBuffer() {
CharBuffer other = CharBuffer.allocate(buf.capacity());
try {
buf.put((CharBuffer) null);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
try {
buf.put(buf);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IllegalArgumentException e) {
// expected
}
try {
buf.put(CharBuffer.allocate(buf.capacity() + 1));
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException e) {
// expected
}
try {
buf.flip();
buf.put((CharBuffer)null);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
loadTestData2(other);
other.clear();
buf.clear();
CharBuffer ret = buf.put(other);
assertEquals(other.position(), other.capacity());
assertEquals(buf.position(), buf.capacity());
assertContentEquals(other, buf);
assertSame(ret, buf);
}
/*
* Class under test for java.nio.CharBuffer put(int, char)
*/
public void testPutintchar() {
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), 0);
CharBuffer ret = buf.put(i, (char) i);
assertEquals(buf.get(i), (char) i);
assertSame(ret, buf);
}
try {
buf.put(-1, (char) 0);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put(buf.limit(), (char) 0);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
}
public void testSlice() {
assertTrue(buf.capacity() > 5);
buf.position(1);
buf.limit(buf.capacity() - 1);
CharBuffer slice = buf.slice();
assertEquals(buf.isReadOnly(), slice.isReadOnly());
assertEquals(buf.isDirect(), slice.isDirect());
assertEquals(buf.order(), slice.order());
assertEquals(slice.position(), 0);
assertEquals(slice.limit(), buf.remaining());
assertEquals(slice.capacity(), buf.remaining());
try {
slice.reset();
fail("Should throw Exception"); //$NON-NLS-1$
} catch (InvalidMarkException e) {
// expected
}
// slice share the same content with buf
if (!slice.isReadOnly()) {
loadTestData1(slice);
assertContentLikeTestData1(buf, 1, (char) 0, slice.capacity());
buf.put(2, (char) 500);
assertEquals(slice.get(1), 500);
}
}
public void testToString() {
String expected = "";
for (int i = buf.position(); i < buf.limit(); i++) {
expected += buf.get(i);
}
String str = buf.toString();
assertEquals(expected, str);
}
public void testCharAt() {
for (int i = 0; i < buf.remaining(); i++) {
assertEquals(buf.get(buf.position() + i), buf.charAt(i));
}
try {
buf.charAt(-1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.charAt(buf.remaining());
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
}
public void testLength() {
assertEquals(buf.length(), buf.remaining());
}
public void testSubSequence() {
try {
buf.subSequence(-1, buf.length());
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.subSequence(buf.length() + 1, buf.length() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
assertEquals(buf.subSequence(buf.length(), buf.length()).length(), 0);
try {
buf.subSequence(1, 0);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.subSequence(1, buf.length() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
assertEquals(buf.subSequence(0, buf.length()).toString(), buf
.toString());
if (buf.length() >= 2) {
assertEquals(buf.subSequence(1, buf.length() - 1).toString(), buf
.toString().substring(1, buf.length() - 1));
}
}
public void testPutString() {
String str = " ";
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.position(), i);
str = "" + (char) i;
CharBuffer ret = buf.put(str);
assertEquals(buf.get(i), (char) i);
assertSame(ret, buf);
}
try {
buf.put(str);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException e) {
// expected
}
try {
buf.put((String) null);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
}
public void testPutStringintint() {
buf.clear();
String str = String.valueOf(new char[buf.capacity()]);
// Throw a BufferOverflowException and no character is transfered to
// CharBuffer
try {
buf.put(String.valueOf(new char[buf.capacity() + 1]), 0, buf
.capacity() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (BufferOverflowException e) {
// expected
}
try {
buf.put((String) null, 0, buf.capacity() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
assertEquals(0, buf.position());
buf.clear();
try {
buf.put(str, -1, str.length());
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put(str, str.length() + 1, str.length() + 2);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put((String) null, -1, 0);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (NullPointerException e) {
// expected
}
buf.put(str, str.length(), str.length());
assertEquals(buf.position(), 0);
try {
buf.put(str, 2, 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
buf.put(str, 2, str.length() + 1);
fail("Should throw Exception"); //$NON-NLS-1$
} catch (IndexOutOfBoundsException e) {
// expected
}
assertEquals(buf.position(), 0);
char array[] = new char[buf.capacity()];
loadTestData2(array, 0, array.length);
str = String.valueOf(array);
CharBuffer ret = buf.put(str, 0, str.length());
assertEquals(buf.position(), buf.capacity());
assertContentEquals(buf, str.toCharArray(), 0, str.length());
assertSame(ret, buf);
}
void loadTestData1(char array[], int offset, int length) {
for (int i = 0; i < length; i++) {
array[offset + i] = (char) i;
}
}
void loadTestData2(char array[], int offset, int length) {
for (int i = 0; i < length; i++) {
array[offset + i] = (char) (length - i);
}
}
void loadTestData1(CharBuffer buf) {
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
buf.put(i, (char) i);
}
}
void loadTestData2(CharBuffer buf) {
buf.clear();
for (int i = 0; i < buf.capacity(); i++) {
buf.put(i, (char) (buf.capacity() - i));
}
}
private void assertContentEquals(CharBuffer buf, char array[], int offset,
int length) {
for (int i = 0; i < length; i++) {
assertEquals(buf.get(i), array[offset + i]);
}
}
private void assertContentEquals(CharBuffer buf, CharBuffer other) {
assertEquals(buf.capacity(), other.capacity());
for (int i = 0; i < buf.capacity(); i++) {
assertEquals(buf.get(i), other.get(i));
}
}
private void assertContentLikeTestData1(CharBuffer buf, int startIndex,
char startValue, int length) {
char value = startValue;
for (int i = 0; i < length; i++) {
assertEquals(buf.get(startIndex + i), value);
value = (char) (value + 1);
}
}
public void testAppendSelf() throws Exception {
CharBuffer cb = CharBuffer.allocate(10);
CharBuffer cb2 = cb.duplicate();
cb.append(cb);
assertEquals(10, cb.position());
cb.clear();
assertEquals(cb2, cb);
cb.put("abc");
cb2 = cb.duplicate();
cb.append(cb);
assertEquals(10, cb.position());
cb.clear();
cb2.clear();
assertEquals(cb2, cb);
cb.put("edfg");
cb.clear();
cb2 = cb.duplicate();
cb.append(cb);
assertEquals(10, cb.position());
cb.clear();
cb2.clear();
assertEquals(cb, cb2);
}
public void testAppendOverFlow() throws IOException {
CharBuffer cb = CharBuffer.allocate(1);
CharSequence cs = "String";
cb.put('A');
try {
cb.append('C');
fail("should throw BufferOverflowException.");
} catch (BufferOverflowException ex) {
// expected;
}
try {
cb.append(cs);
fail("should throw BufferOverflowException.");
} catch (BufferOverflowException ex) {
// expected;
}
try {
cb.append(cs, 1, 2);
fail("should throw BufferOverflowException.");
} catch (BufferOverflowException ex) {
// expected;
}
}
public void testReadOnlyMap() throws IOException {
CharBuffer cb = CharBuffer.wrap("ABCDE").asReadOnlyBuffer();
CharSequence cs = "String";
try {
cb.append('A');
fail("should throw ReadOnlyBufferException.");
} catch (ReadOnlyBufferException ex) {
// expected;
}
try {
cb.append(cs);
fail("should throw ReadOnlyBufferException.");
} catch (ReadOnlyBufferException ex) {
// expected;
}
try {
cb.append(cs, 1, 2);
fail("should throw ReadOnlyBufferException.");
} catch (ReadOnlyBufferException ex) {
// expected;
}
cb.append(cs, 1, 1);
}
public void testAppendCNormal() throws IOException {
CharBuffer cb = CharBuffer.allocate(2);
cb.put('A');
assertSame(cb, cb.append('B'));
assertEquals('B', cb.get(1));
}
public void testAppendCharSequenceNormal() throws IOException {
CharBuffer cb = CharBuffer.allocate(10);
cb.put('A');
assertSame(cb, cb.append("String"));
assertEquals("AString", cb.flip().toString());
cb.append(null);
assertEquals("null", cb.flip().toString());
}
public void testAppendCharSequenceIINormal() throws IOException {
CharBuffer cb = CharBuffer.allocate(10);
cb.put('A');
assertSame(cb, cb.append("String", 1, 3));
assertEquals("Atr", cb.flip().toString());
cb.append(null, 0, 1);
assertEquals("n", cb.flip().toString());
}
public void testAppendCharSequenceII_IllegalArgument() throws IOException {
CharBuffer cb = CharBuffer.allocate(10);
cb.append("String", 0, 0);
cb.append("String", 2, 2);
try {
cb.append("String", -1, 1);
fail("should throw IndexOutOfBoundsException.");
} catch (IndexOutOfBoundsException ex) {
// expected;
}
try {
cb.append("String", -1, -1);
fail("should throw IndexOutOfBoundsException.");
} catch (IndexOutOfBoundsException ex) {
// expected;
}
try {
cb.append("String", 3, 2);
fail("should throw IndexOutOfBoundsException.");
} catch (IndexOutOfBoundsException ex) {
// expected;
}
try {
cb.append("String", 3, 0);
fail("should throw IndexOutOfBoundsException.");
} catch (IndexOutOfBoundsException ex) {
// expected;
}
try {
cb.append("String", 3, 110);
fail("should throw IndexOutOfBoundsException.");
} catch (IndexOutOfBoundsException ex) {
// expected;
}
}
public void testReadCharBuffer() throws IOException {
CharBuffer source = CharBuffer.wrap("String");
CharBuffer target = CharBuffer.allocate(10);
assertEquals(6, source.read(target));
assertEquals("String", target.flip().toString());
// return -1 when nothing to read
assertEquals(-1, source.read(target));
// NullPointerException
try {
assertEquals(-1, source.read(null));
fail("should throw NullPointerException.");
} catch (NullPointerException ex) {
// expected;
}
}
public void testReadReadOnly() throws IOException {
CharBuffer source = CharBuffer.wrap("String");
CharBuffer target = CharBuffer.allocate(10).asReadOnlyBuffer();
try {
source.read(target);
fail("should throw ReadOnlyBufferException.");
} catch (ReadOnlyBufferException ex) {
// expected;
}
// if target has no remaining, needn't to check the isReadOnly
target.flip();
assertEquals(0, source.read(target));
}
public void testReadOverflow() throws IOException {
CharBuffer source = CharBuffer.wrap("String");
CharBuffer target = CharBuffer.allocate(1);
assertEquals(1, source.read(target));
assertEquals("S", target.flip().toString());
assertEquals(1, source.position());
}
public void testReadSelf() throws Exception {
CharBuffer source = CharBuffer.wrap("abuffer");
try {
source.read(source);
fail("should throw IAE.");
} catch (IllegalArgumentException e) {
//expected
}
}
public void testRead_scenario1() throws Exception {
char[] charArray = new char[] { 'a', 'b' };
CharBuffer charBuffer = CharBuffer.wrap(charArray);
try {
charBuffer.read(charBuffer);
fail("should throw IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected
}
charBuffer.put(charArray);
assertEquals(-1, charBuffer.read(charBuffer));
}
public void testRead_scenario2() throws Exception {
CharBuffer charBufferA = CharBuffer.allocate(0);
CharBuffer allocateBuffer = CharBuffer.allocate(1);
CharBuffer charBufferB = CharBuffer.wrap(allocateBuffer);
assertEquals(-1, charBufferA.read(charBufferB));
allocateBuffer.append(allocateBuffer);
charBufferB = CharBuffer.wrap(allocateBuffer);
assertEquals(-1, charBufferA.read(charBufferB));
}
public void testIsDirect() {
assertFalse(buf.isDirect());
}
public void testHasArray() {
assertTrue(buf.hasArray());
}
public void testOrder() {
assertEquals(ByteOrder.nativeOrder(), buf.order());
}
public void testIsReadOnly() {
assertFalse(buf.isReadOnly());
}
}