267 lines
9.6 KiB
Java
267 lines
9.6 KiB
Java
/*
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* Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.channels.SocketChannel;
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import java.nio.charset.StandardCharsets;
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import java.util.Arrays;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletionException;
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import java.util.concurrent.CompletionStage;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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import static org.testng.Assert.assertThrows;
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import static org.testng.Assert.assertFalse;
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public class Support {
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private Support() { }
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public static void assertFails(Class<? extends Throwable> clazz,
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CompletionStage<?> stage) {
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Support.assertCompletesExceptionally(clazz, stage);
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}
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public static void assertNotDone(CompletableFuture<?> future) {
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assertFalse(future.isDone());
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}
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public static void assertCompletesExceptionally(Class<? extends Throwable> clazz,
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CompletionStage<?> stage) {
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CompletableFuture<?> cf =
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CompletableFuture.completedFuture(null).thenCompose(x -> stage);
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assertThrows(clazz, () -> {
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try {
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cf.join();
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} catch (CompletionException e) {
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throw e.getCause();
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}
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});
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}
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public static void assertHangs(CompletionStage<?> stage) {
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Support.assertDoesNotCompleteWithin(5, TimeUnit.SECONDS, stage);
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}
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public static void assertDoesNotCompleteWithin(long timeout,
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TimeUnit unit,
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CompletionStage<?> stage) {
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CompletableFuture<?> cf =
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CompletableFuture.completedFuture(null).thenCompose(x -> stage);
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assertThrows(TimeoutException.class, () -> cf.get(timeout, unit));
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}
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public static ByteBuffer fullCopy(ByteBuffer src) {
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ByteBuffer copy = ByteBuffer.allocate(src.capacity());
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int p = src.position();
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int l = src.limit();
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src.clear();
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copy.put(src).position(p).limit(l);
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src.position(p).limit(l);
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return copy;
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}
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public static DummyWebSocketServer serverWithCannedData(int... data) {
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return serverWithCannedDataAndAuthentication(null, null, data);
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}
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public static DummyWebSocketServer serverWithCannedDataAndAuthentication(
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String username,
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String password,
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int... data)
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{
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byte[] copy = new byte[data.length];
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for (int i = 0; i < data.length; i++) {
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copy[i] = (byte) data[i];
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}
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return serverWithCannedDataAndAuthentication(username, password, copy);
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}
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public static DummyWebSocketServer serverWithCannedData(byte... data) {
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return serverWithCannedDataAndAuthentication(null, null, data);
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}
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public static DummyWebSocketServer serverWithCannedDataAndAuthentication(
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String username,
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String password,
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byte... data)
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{
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byte[] copy = Arrays.copyOf(data, data.length);
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return new DummyWebSocketServer(username, password) {
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@Override
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protected void write(SocketChannel ch) throws IOException {
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int off = 0; int n = 1; // 1 byte at a time
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while (off + n < copy.length + n) {
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// try {
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// TimeUnit.MICROSECONDS.sleep(500);
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// } catch (InterruptedException e) {
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// return;
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// }
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int len = Math.min(copy.length - off, n);
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ByteBuffer bytes = ByteBuffer.wrap(copy, off, len);
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off += len;
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ch.write(bytes);
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}
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super.write(ch);
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}
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};
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}
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/*
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* This server does not read from the wire, allowing its client to fill up
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* their send buffer. Used to test scenarios with outstanding send
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* operations.
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*/
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public static DummyWebSocketServer notReadingServer() {
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return new DummyWebSocketServer() {
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volatile Thread reader;
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@Override
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protected void read(SocketChannel ch) throws IOException {
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reader = Thread.currentThread();
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try {
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System.out.println("Not reading server waiting");
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Thread.sleep(Long.MAX_VALUE);
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} catch (InterruptedException e) {
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throw new IOException(e);
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}
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}
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@Override
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protected void closeChannel(SocketChannel channel) {
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try {
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long read = drain(channel);
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System.out.printf("Not reading server drained %s bytes%n", read);
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} catch (IOException io) {
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System.out.println("Not reading server failed to drain channel: " + io);
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}
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super.closeChannel(channel);
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}
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@Override
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public void close() {
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super.close();
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Thread thread = reader;
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if (thread != null && thread.isAlive() && thread != Thread.currentThread()) {
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try {
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thread.join();
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System.out.println("Not reading server: closed");
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} catch (InterruptedException x) {
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System.out.println("Not reading server: close interrupted: " + x);
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}
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}
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}
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};
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}
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static long drain(SocketChannel channel) throws IOException {
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System.out.println("Not reading server: draining socket");
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var blocking = channel.isBlocking();
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if (blocking) channel.configureBlocking(false);
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long count = 0;
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try {
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ByteBuffer buffer = ByteBuffer.allocateDirect(8 * 1024);
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int read;
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while ((read = channel.read(buffer)) > 0) {
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count += read;
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buffer.clear();
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}
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return count;
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} finally {
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if (blocking != channel.isBlocking()) {
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channel.configureBlocking(blocking);
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}
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}
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}
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public static DummyWebSocketServer writingServer(int... data) {
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byte[] copy = new byte[data.length];
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for (int i = 0; i < data.length; i++) {
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copy[i] = (byte) data[i];
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}
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return new DummyWebSocketServer() {
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@Override
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protected void read(SocketChannel ch) throws IOException {
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try {
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Thread.sleep(Long.MAX_VALUE);
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} catch (InterruptedException e) {
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throw new IOException(e);
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}
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}
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@Override
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protected void write(SocketChannel ch) throws IOException {
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int off = 0; int n = 1; // 1 byte at a time
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while (off + n < copy.length + n) {
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// try {
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// TimeUnit.MICROSECONDS.sleep(500);
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// } catch (InterruptedException e) {
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// return;
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// }
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int len = Math.min(copy.length - off, n);
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ByteBuffer bytes = ByteBuffer.wrap(copy, off, len);
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off += len;
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ch.write(bytes);
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}
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super.write(ch);
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}
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};
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}
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public static String stringWith2NBytes(int n) {
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// -- Russian Alphabet (33 characters, 2 bytes per char) --
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char[] abc = {
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0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0401, 0x0416,
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0x0417, 0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E,
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0x041F, 0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426,
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0x0427, 0x0428, 0x0429, 0x042A, 0x042B, 0x042C, 0x042D, 0x042E,
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0x042F,
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};
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// repeat cyclically
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StringBuilder sb = new StringBuilder(n);
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for (int i = 0, j = 0; i < n; i++, j = (j + 1) % abc.length) {
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sb.append(abc[j]);
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}
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String s = sb.toString();
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assert s.length() == n && s.getBytes(StandardCharsets.UTF_8).length == 2 * n;
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return s;
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}
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public static String malformedString() {
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return new String(new char[]{0xDC00, 0xD800});
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}
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public static String incompleteString() {
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return new String(new char[]{0xD800});
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}
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public static String stringWithNBytes(int n) {
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char[] chars = new char[n];
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Arrays.fill(chars, 'A');
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return new String(chars);
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}
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}
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