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