| /* |
| * 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.nio.tests.java.nio; |
| |
| import java.nio.BufferOverflowException; |
| import java.nio.BufferUnderflowException; |
| import java.nio.ByteOrder; |
| import java.nio.InvalidMarkException; |
| import java.nio.ShortBuffer; |
| |
| /** |
| * Tests java.nio.ShortBuffer |
| * |
| */ |
| public class ShortBufferTest extends AbstractBufferTest { |
| |
| protected static final int SMALL_TEST_LENGTH = 5; |
| |
| protected static final int BUFFER_LENGTH = 20; |
| |
| protected ShortBuffer buf; |
| |
| protected void setUp() throws Exception { |
| buf = ShortBuffer.allocate(BUFFER_LENGTH); |
| loadTestData1(buf); |
| baseBuf = buf; |
| } |
| |
| protected void tearDown() throws Exception { |
| buf = null; |
| baseBuf = null; |
| } |
| |
| public void testArray() { |
| short 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() { |
| short 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 |
| ShortBuffer 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()); |
| 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); |
| } |
| |
| public void testCompact() { |
| // case: buffer is full |
| buf.clear(); |
| buf.mark(); |
| loadTestData1(buf); |
| ShortBuffer ret = buf.compact(); |
| assertSame(ret, buf); |
| assertEquals(buf.position(), buf.capacity()); |
| assertEquals(buf.limit(), buf.capacity()); |
| assertContentLikeTestData1(buf, 0, (short) 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, (short) 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, (short) 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)); |
| |
| // normal cases |
| assertTrue(buf.capacity() > 5); |
| buf.clear(); |
| ShortBuffer other = ShortBuffer.allocate(buf.capacity()); |
| loadTestData1(other); |
| 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); |
| other.limit(5); |
| assertTrue(buf.compareTo(other) > 0); |
| assertTrue(other.compareTo(buf) < 0); |
| } |
| |
| public void testDuplicate() { |
| buf.clear(); |
| buf.mark(); |
| buf.position(buf.limit()); |
| |
| // duplicate's contents should be the same as buf |
| ShortBuffer 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()); |
| 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); |
| |
| // 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)); |
| ShortBuffer readonly = buf.asReadOnlyBuffer(); |
| assertTrue(buf.equals(readonly)); |
| ShortBuffer 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 short 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.ShortBuffer get(short[]) |
| */ |
| public void testGetshortArray() { |
| short array[] = new short[1]; |
| buf.clear(); |
| for (int i = 0; i < buf.capacity(); i++) { |
| assertEquals(buf.position(), i); |
| ShortBuffer 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.ShortBuffer get(short[], int, int) |
| */ |
| public void testGetshortArrayintint() { |
| buf.clear(); |
| short array[] = new short[buf.capacity()]; |
| |
| try { |
| buf.get(new short[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((short[])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(); |
| ShortBuffer 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 short 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 testHasArray() { |
| assertNotNull(buf.array()); |
| } |
| |
| public void testHashCode() { |
| buf.clear(); |
| ShortBuffer readonly = buf.asReadOnlyBuffer(); |
| ShortBuffer duplicate = buf.duplicate(); |
| assertTrue(buf.hashCode() == readonly.hashCode()); |
| |
| assertTrue(buf.capacity() > 5); |
| duplicate.position(buf.capacity() / 2); |
| assertTrue(buf.hashCode() != duplicate.hashCode()); |
| } |
| |
| public void testIsDirect() { |
| assertFalse(buf.isDirect()); |
| } |
| |
| public void testOrder() { |
| buf.order(); |
| assertEquals(ByteOrder.nativeOrder(), buf.order()); |
| } |
| |
| /* |
| * Class under test for java.nio.ShortBuffer put(short) |
| */ |
| public void testPutshort() { |
| buf.clear(); |
| for (int i = 0; i < buf.capacity(); i++) { |
| assertEquals(buf.position(), i); |
| ShortBuffer ret = buf.put((short) i); |
| assertEquals(buf.get(i), (short) i); |
| assertSame(ret, buf); |
| } |
| try { |
| buf.put((short) 0); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (BufferOverflowException e) { |
| // expected |
| } |
| } |
| |
| /* |
| * Class under test for java.nio.ShortBuffer put(short[]) |
| */ |
| public void testPutshortArray() { |
| short array[] = new short[1]; |
| buf.clear(); |
| for (int i = 0; i < buf.capacity(); i++) { |
| assertEquals(buf.position(), i); |
| array[0] = (short) i; |
| ShortBuffer ret = buf.put(array); |
| assertEquals(buf.get(i), (short) i); |
| assertSame(ret, buf); |
| } |
| try { |
| buf.put(array); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (BufferOverflowException e) { |
| // expected |
| } |
| try { |
| buf.position(buf.limit()); |
| buf.put((short[])null); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (NullPointerException e) { |
| // expected |
| } |
| } |
| |
| /* |
| * Class under test for java.nio.ShortBuffer put(short[], int, int) |
| */ |
| public void testPutshortArrayintint() { |
| buf.clear(); |
| short array[] = new short[buf.capacity()]; |
| try { |
| buf.put(new short[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((short[])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); |
| ShortBuffer 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.ShortBuffer put(java.nio.ShortBuffer) |
| */ |
| public void testPutShortBuffer() { |
| ShortBuffer other = ShortBuffer.allocate(buf.capacity()); |
| try { |
| buf.put(buf); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (IllegalArgumentException e) { |
| // expected |
| } |
| try { |
| buf.put(ShortBuffer.allocate(buf.capacity() + 1)); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (BufferOverflowException e) { |
| // expected |
| } |
| try { |
| buf.flip(); |
| buf.put((ShortBuffer)null); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (NullPointerException e) { |
| // expected |
| } |
| |
| loadTestData2(other); |
| other.clear(); |
| buf.clear(); |
| ShortBuffer 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.ShortBuffer put(int, short) |
| */ |
| public void testPutintshort() { |
| buf.clear(); |
| for (int i = 0; i < buf.capacity(); i++) { |
| assertEquals(buf.position(), 0); |
| ShortBuffer ret = buf.put(i, (short) i); |
| assertEquals(buf.get(i), (short) i); |
| assertSame(ret, buf); |
| } |
| try { |
| buf.put(-1, (short) 0); |
| fail("Should throw Exception"); //$NON-NLS-1$ |
| } catch (IndexOutOfBoundsException e) { |
| // expected |
| } |
| try { |
| buf.put(buf.limit(), (short) 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); |
| |
| ShortBuffer 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, (short) 0, slice.capacity()); |
| buf.put(2, (short) 500); |
| assertEquals(slice.get(1), 500); |
| } |
| } |
| |
| public void testToString() { |
| String str = buf.toString(); |
| assertTrue(str.indexOf("Short") >= 0 || str.indexOf("short") >= 0); |
| assertTrue(str.indexOf("" + buf.position()) >= 0); |
| assertTrue(str.indexOf("" + buf.limit()) >= 0); |
| assertTrue(str.indexOf("" + buf.capacity()) >= 0); |
| } |
| |
| void loadTestData1(short array[], int offset, int length) { |
| for (int i = 0; i < length; i++) { |
| array[offset + i] = (short) i; |
| } |
| } |
| |
| void loadTestData2(short array[], int offset, int length) { |
| for (int i = 0; i < length; i++) { |
| array[offset + i] = (short) (length - i); |
| } |
| } |
| |
| void loadTestData1(ShortBuffer buf) { |
| buf.clear(); |
| for (int i = 0; i < buf.capacity(); i++) { |
| buf.put(i, (short) i); |
| } |
| } |
| |
| void loadTestData2(ShortBuffer buf) { |
| buf.clear(); |
| for (int i = 0; i < buf.capacity(); i++) { |
| buf.put(i, (short) (buf.capacity() - i)); |
| } |
| } |
| |
| void assertContentEquals(ShortBuffer buf, short array[], |
| int offset, int length) { |
| for (int i = 0; i < length; i++) { |
| assertEquals(buf.get(i), array[offset + i]); |
| } |
| } |
| |
| void assertContentEquals(ShortBuffer buf, ShortBuffer other) { |
| assertEquals(buf.capacity(), other.capacity()); |
| for (int i = 0; i < buf.capacity(); i++) { |
| assertEquals(buf.get(i), other.get(i)); |
| } |
| } |
| |
| void assertContentLikeTestData1(ShortBuffer buf, |
| int startIndex, short startValue, int length) { |
| short value = startValue; |
| for (int i = 0; i < length; i++) { |
| assertEquals(buf.get(startIndex + i), value); |
| value = (short) (value + 1); |
| } |
| } |
| } |