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- /*
- * Copyright (C) 2009, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.util.io;
-
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.fail;
-
- import java.io.ByteArrayInputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.util.Arrays;
-
- import org.junit.Test;
-
- public class UnionInputStreamTest {
- @Test
- public void testEmptyStream() throws IOException {
- final UnionInputStream u = new UnionInputStream();
- assertTrue(u.isEmpty());
- assertEquals(-1, u.read());
- assertEquals(-1, u.read(new byte[1], 0, 1));
- assertEquals(0, u.available());
- assertEquals(0, u.skip(1));
- u.close();
- }
-
- @Test
- public void testReadSingleBytes() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream();
-
- assertTrue(u.isEmpty());
- u.add(new ByteArrayInputStream(new byte[] { 1, 0, 2 }));
- u.add(new ByteArrayInputStream(new byte[] { 3 }));
- u.add(new ByteArrayInputStream(new byte[] { 4, 5 }));
-
- assertFalse(u.isEmpty());
- assertEquals(3, u.available());
- assertEquals(1, u.read());
- assertEquals(0, u.read());
- assertEquals(2, u.read());
- assertEquals(0, u.available());
-
- assertEquals(3, u.read());
- assertEquals(0, u.available());
-
- assertEquals(4, u.read());
- assertEquals(1, u.available());
- assertEquals(5, u.read());
- assertEquals(0, u.available());
- assertEquals(-1, u.read());
-
- assertTrue(u.isEmpty());
- u.add(new ByteArrayInputStream(new byte[] { (byte) 255 }));
- assertEquals(255, u.read());
- assertEquals(-1, u.read());
- assertTrue(u.isEmpty());
- }
-
- @Test
- public void testReadByteBlocks() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream();
- u.add(new ByteArrayInputStream(new byte[] { 1, 0, 2 }));
- u.add(new ByteArrayInputStream(new byte[] { 3 }));
- u.add(new ByteArrayInputStream(new byte[] { 4, 5 }));
-
- final byte[] r = new byte[5];
- assertEquals(3, u.read(r, 0, 5));
- assertTrue(Arrays.equals(new byte[] { 1, 0, 2, }, slice(r, 3)));
- assertEquals(1, u.read(r, 0, 5));
- assertEquals(3, r[0]);
- assertEquals(2, u.read(r, 0, 5));
- assertTrue(Arrays.equals(new byte[] { 4, 5, }, slice(r, 2)));
- assertEquals(-1, u.read(r, 0, 5));
- }
-
- private static byte[] slice(byte[] in, int len) {
- byte[] r = new byte[len];
- System.arraycopy(in, 0, r, 0, len);
- return r;
- }
-
- @Test
- public void testArrayConstructor() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream(
- new ByteArrayInputStream(new byte[] { 1, 0, 2 }),
- new ByteArrayInputStream(new byte[] { 3 }),
- new ByteArrayInputStream(new byte[] { 4, 5 }));
-
- final byte[] r = new byte[5];
- assertEquals(3, u.read(r, 0, 5));
- assertTrue(Arrays.equals(new byte[] { 1, 0, 2, }, slice(r, 3)));
- assertEquals(1, u.read(r, 0, 5));
- assertEquals(3, r[0]);
- assertEquals(2, u.read(r, 0, 5));
- assertTrue(Arrays.equals(new byte[] { 4, 5, }, slice(r, 2)));
- assertEquals(-1, u.read(r, 0, 5));
- }
-
- @Test
- public void testMarkSupported() {
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream();
- assertFalse(u.markSupported());
- u.add(new ByteArrayInputStream(new byte[] { 1, 0, 2 }));
- assertFalse(u.markSupported());
- }
-
- @Test
- public void testSkip() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream();
- u.add(new ByteArrayInputStream(new byte[] { 1, 0, 2 }));
- u.add(new ByteArrayInputStream(new byte[] { 3 }));
- u.add(new ByteArrayInputStream(new byte[] { 4, 5 }));
- assertEquals(0, u.skip(0));
- assertEquals(3, u.skip(3));
- assertEquals(3, u.read());
- assertEquals(2, u.skip(5));
- assertEquals(0, u.skip(5));
- assertEquals(-1, u.read());
-
- u.add(new ByteArrayInputStream(new byte[] { 20, 30 }) {
- @Override
- public long skip(long n) {
- return 0;
- }
- });
- assertEquals(2, u.skip(8));
- assertEquals(-1, u.read());
- }
-
- @Test
- public void testAutoCloseDuringRead() throws IOException {
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream();
- final boolean closed[] = new boolean[2];
- u.add(new ByteArrayInputStream(new byte[] { 1 }) {
- @Override
- public void close() {
- closed[0] = true;
- }
- });
- u.add(new ByteArrayInputStream(new byte[] { 2 }) {
- @Override
- public void close() {
- closed[1] = true;
- }
- });
-
- assertFalse(closed[0]);
- assertFalse(closed[1]);
-
- assertEquals(1, u.read());
- assertFalse(closed[0]);
- assertFalse(closed[1]);
-
- assertEquals(2, u.read());
- assertTrue(closed[0]);
- assertFalse(closed[1]);
-
- assertEquals(-1, u.read());
- assertTrue(closed[0]);
- assertTrue(closed[1]);
- }
-
- @Test
- public void testCloseDuringClose() throws IOException {
- final UnionInputStream u = new UnionInputStream();
- final boolean closed[] = new boolean[2];
- u.add(new ByteArrayInputStream(new byte[] { 1 }) {
- @Override
- public void close() {
- closed[0] = true;
- }
- });
- u.add(new ByteArrayInputStream(new byte[] { 2 }) {
- @Override
- public void close() {
- closed[1] = true;
- }
- });
-
- assertFalse(closed[0]);
- assertFalse(closed[1]);
-
- u.close();
-
- assertTrue(closed[0]);
- assertTrue(closed[1]);
- }
-
- @Test
- public void testExceptionDuringClose() {
- final UnionInputStream u = new UnionInputStream();
- u.add(new ByteArrayInputStream(new byte[] { 1 }) {
- @Override
- public void close() throws IOException {
- throw new IOException("I AM A TEST");
- }
- });
- try {
- u.close();
- fail("close ignored inner stream exception");
- } catch (IOException e) {
- assertEquals("I AM A TEST", e.getMessage());
- }
- }
-
- @Test
- public void testNonBlockingPartialRead() throws Exception {
- InputStream errorReadStream = new InputStream() {
- @Override
- public int read() throws IOException {
- throw new IOException("Expected");
- }
- };
- @SuppressWarnings("resource" /* java 7 */)
- final UnionInputStream u = new UnionInputStream(
- new ByteArrayInputStream(new byte[]{1,2,3}),
- errorReadStream);
- byte buf[] = new byte[10];
- assertEquals(3, u.read(buf, 0, 10));
- assertTrue(Arrays.equals(new byte[] {1,2,3}, slice(buf, 3)));
- try {
- u.read(buf, 0, 1);
- fail("Expected exception from errorReadStream");
- } catch (IOException e) {
- assertEquals("Expected", e.getMessage());
- }
- }
- }
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